BD6083GUL

LED Drivers for LCD BackLights Multifunction Backlight LED Driver for Small LCD Panels (Charge Pump Type) BD6083GUL ●Description BD6083GUL is “Intelligent LED Driver” that is the most suitable for the cellular phone. It has 3 - 6LED driver and output variable LDO4ch for LCD Backlight. It has ALC function that is “Low Power Consumption System” realized. It can be developed widely from the high End model to the Low End model. As it has charge pump circuit for DCDC, it is no need to use coils, and it contributes to small space. VCSP50L3 (3.15mm x 3.15mm 0.5mm pitch) It adopts the very thin CSP package that is the most suitable for the slim phone. ●Features 1) Total 3 - 6LEDs driver for LCD Backlight ・It has 4LEDs (it can select 4LED or 3LED) for exclusire use of Main and 2LEDs which can chose independent control or a main allotment by resister setting. ・Main Group” can be controlled by Auto Luminous Control (ALC) system. “Main Group” can be controlled by external PWM signal. ・ON/ Off and a setup of LED current are possible at the time of the independent control by the independence. 2) Ambient Light sensor interface ・Incorporates various functions such as a sensor bias adjustment function, an ADC with an average filter, a gainoffset adjustment function and an LOG conversion function so that options can be increased for illumination intensity sensors (Photo Diode, Photo Transistor, Photo IC (Linear/LOG)). ・Incorporates an auto gain switching function for suppressing an illumination intensity sensor current at high illumination intensity and improving sensitivity at low illumination intensity ・Capable of customizing an LED current value according to a table setting. ・Slope control loading and an independent control change are possible. 3) Charge Pump DC/DC for LED driver ・It has x1/x1.5/ x2 mode that will be selected automatically. ・The most suitable voltage up magnification is controlled automatically by LED port voltage. ・Soft start functions、Over voltage protection (Auto-return type),Over current protection (Auto-return type) loading 4) 4ch Series Regulator (LDO) ・It has selectable output voltage by the register.(16 steps) LDO1, LDO2, LDO3, LDO4: Iomax=150mA 5) Thermal shutdown 2 6) I C BUS FS mode (max 400 kHz) Compatibility ●Absolute Maximum Ratings (Ta=25 ℃) Parameter Maximum Voltage Power Dissipation Operating Temperature Range Storage Temperature Range (Note) No.10040EAT16 Symbol VMAX Pd Topr Tstg Ratings 7 1280 (Note) Unit V mW ℃ ℃ -30 ~ +85 -55 ~ +150 Power dissipation deleting is 10.24mW/ ℃ , when it’s used in over 25 ℃. (It’s deleting is on the board that is ROHM’s standard) ●Operating Conditions (VBAT≥VIO, Ta=-30~85 ℃) Parameter Symbol VBAT Input Voltage VIO Pin Voltage VBAT VIO Limits 2.7 ~ 5.5 1.65 ~ 3.3 Unit V V www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 1/45 2010.07 - Rev.A BD6083GUL ●Electrical Characteristics (Unless otherwise specified, Ta=25℃, VBAT=3.6V, VIO=1.8V) Limits Parameter Symbol Unit Min. Typ. Max. 【Circuit Current】 VBAT Circuit Current 1 VBAT Circuit Current 2 VBAT Circuit Current 3 VBAT Circuit Current 4 VBAT Circuit Current 5 VBAT Circuit Current 6 VBAT Circuit Current 7 VBAT Circuit Current 8 【LED Driver】 LED Current Step (Setup) LED Current Step (At slope) LED Maximum Setup Current LED Current Accuracy LED Current Matching LED OFF Leak Current 【DC/DC(Charge Pump)】 Output Voltage Drive Ability Switching Frequency Over Voltage Protection Detect Voltage Over Current Protection Detect Current 【Sensor Interface】 SBIAS Output Voltage SBIAS Maximum Output Current SBIAS Discharge Resister at OFF SSENS Input Range ADC Resolution ADC Integral Calculus Non-linearity ADC Differential Calculus Non-linearity VoS IomaxS ROFFS VISS ADRES ADINL ADDNL -3 -1 2.85 30 0 3.0 1.0 8 +3 +1 3.15 1.5 VoS× 255/256 V mA kΩ V bit LSB LSB Io=200µA VoCP IOUT fosc OVP OCP - Technical Note Conditions IBAT1 IBAT2 IBAT3 IBAT4 IBAT5 IBAT6 IBAT7 IBAT8 - 0.1 0.5 61 92 123 0.25 90 90 3.0 3.0 65 102 140 1.0 150 150 μA μA mA mA mA mA μA μA RESETB=0V, VIO= 0V RESETB=0V, VIO=1.8V DC/DC x1 mode, Io=60mA VBAT=4.0V DC/DC x1.5 mode, Io=60mA VBAT=3.6V DC/DC x2 mode, Io=60mA VBAT=2.7V ALC Operating ALCEN=1, AD cycle=0.5s setting Except sensor current LDO1,2=ON, ILDO=0mA LDO3,4=ON, ILDO=0mA ILEDSTP1 ILEDSTP2 IMAXWLED IWLED ILEDMT ILKLED -7% - 128 256 25.6 15 +7% 4 1.0 Step LED1~6 Step LED1~6 mA mA % μA LED1~6 ILED=15mA setting, VLED=1.0V Between LED1~6 at VLED=1.0V, ILED=15mA VLED=4.5V Vf+0.2 1.0 5.6 250 Vf+0.25 150 1.2 375 V mA MHz V mA Vf is forward direction of LED VBAT≥3.2V, VOUT=3.9V 0.8 - VOUT=0V www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 2/45 2010.07 - Rev.A BD6083GUL ●Electrical Characteristics (Unless otherwise specified, Ta=25℃, VBAT=3.6V, VIO=1.8V) Limits Parameter Symbol Unit Min. Typ. Max. 【Regulator (LDO1)】 1.164 1.261 1.455 1.552 1.746 2.134 2.328 2.425 2.522 2.619 2.716 2.813 2.910 3.007 3.104 3.201 1.164 1.261 1.455 1.552 1.746 2.134 2.328 2.425 2.522 2.619 2.716 2.813 2.910 3.007 3.104 3.201 1.20 1.30 1.50 1.60 1.80 2.20 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 0.2 10 10 65 200 1.0 1.20 1.30 1.50 1.60 1.80 2.20 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 0.2 10 10 65 200 1.0 1.236 1.339 1.545 1.648 1.854 2.266 2.472 2.575 2.678 2.781 2.884 2.987 3.090 3.193 3.296 3.399 150 0.3 60 60 400 1.5 1.236 1.339 1.545 1.648 1.854 2.266 2.472 2.575 2.678 2.781 2.884 2.987 3.090 3.193 3.296 3.399 150 0.3 60 60 400 1.5 V V V V V V V V V V V V V V V V mA V mV mV dB mA kΩ V V V V V V V V V V V V V V V V mA V mV mV dB mA kΩ Technical Note Condition Output Voltage Vo1 Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Vo=1.8V VBAT=2.5V, Io=150mA, Vo=2.8V Io=1~150mA, Vo=1.8V VBAT=3.4~4.5V, Io=50mA, Vo=1.8V f=100Hz, Vin=200mVp-p, Vo=1.2V Io=50mA, BW=20Hz~20kHz Vo=0V Output Current Dropout Voltage Load Stability Input Voltage Stability Ripple Rejection Ratio Short Circuit Current Limit Discharge Resister at OFF 【Regulator (LDO2)】 Io1 Vsat1 ΔVo11 ΔVo12 RR1 Ilim1 ROFF1 Output Voltage Vo2 Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Vo=2.5V VBAT=2.5V, Io=150mA, Vo=2.8V Io=1~150mA, Vo=2.5V VBAT=3.4~4.5V, Io=50mA, Vo=2.5V f=100Hz, Vin=200mVp-p, Vo=1.2V Io=50mA, BW=20Hz~20kHz Vo=0V Output Current Dropout Voltage Load Stability Input Voltage Stability Ripple Rejection Ratio Short Circuit Current Limit Discharge Resister at OFF Io2 Vsat2 Δvo21 Δvo22 RR2 Ilim2 ROFF2 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 3/45 2010.07 - Rev.A BD6083GUL ●Electrical Characteristics (Unless otherwise specified, Ta=25℃, VBAT=3.6V, VIO=1.8V) Limits Parameter Symbol Unit Min. Typ. Max. 【Regulator (LDO3)】 1.164 1.261 1.455 1.552 1.746 2.134 2.328 2.425 2.522 2.619 2.716 2.813 2.910 3.007 3.104 3.201 1.164 1.261 1.455 1.552 1.746 2.134 2.328 2.425 2.522 2.619 2.716 2.813 2.910 3.007 3.104 3.201 1.20 1.30 1.50 1.60 1.80 2.20 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 0.2 10 10 65 200 1.0 1.20 1.30 1.50 1.60 1.80 2.20 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 0.2 10 10 65 200 1.0 1.236 1.339 1.545 1.648 1.854 2.266 2.472 2.575 2.678 2.781 2.884 2.987 3.090 3.193 3.296 3.399 150 0.3 60 60 400 1.5 1.236 1.339 1.545 1.648 1.854 2.266 2.472 2.575 2.678 2.781 2.884 2.987 3.090 3.193 3.296 3.399 150 0.3 60 60 400 1.5 V V V V V V V V V V V V V V V V mA V mV mV dB mA kΩ V V V V V V V V V V V V V V V V mA V mV mV dB mA kΩ Technical Note Condition Output Voltage Vo3 Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Vo=1.8V VBAT=2.5V, Io=150mA, Vo=2.8V Io=1~150mA, Vo=1.8V VBAT=3.4~4.5V, Io=50mA, Vo=1.8V f=100Hz, Vin=200mVp-p, Vo=1.2V Io=50mA, BW=20Hz~20kHz Vo=0V Output Current Dropout Voltage Load Stability Input Voltage Stability Ripple Rejection Ratio Short Circuit Current Limit Discharge Resister at OFF 【Regulator (LDO4)】 Io3 Vsat3 ΔVo31 ΔVo32 RR3 Ilim3 ROFF3 Output Voltage Vo4 Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Io=50mA Vo=2.8V VBAT=2.5V, Io=150mA, Vo=2.8V Io=1~150mA, Vo=2.8V VBAT=3.4~4.5V, Io=50mA, Vo=2.8V f=100Hz, Vin=200mVp-p, Vo=1.2V Io=50mA, BW=20Hz~20kHz Vo=0V Output Current Dropout Voltage Load Stability Input Voltage Stability Ripple Rejection Ratio Short Circuit Current Limit Discharge Resister at OFF Io4 Vsat4 ΔVo41 ΔVo42 RR4 Ilim4 ROFF4 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 4/45 2010.07 - Rev.A BD6083GUL ●Electrical Characteristics (Unless otherwise specified, Ta=25℃, VBAT=3.6V, VIO=1.8V) Limits Parameter Symbol Unit Min. Typ. Max. 【SDA, SCL】 (I2C Interface) L Level Input Voltage H Level Input Voltage Hysteresis of Schmitt trigger Input L Level Output Voltage Input Current 【RESETB】 (CMOS Input Pin) L Level Input Voltage H Level Input Voltage Input Current 【WPWMIN】 (NMOS Input Pin) L Level Input Voltage H Level Input Voltage Input Current PWM Input Minimum High Pulse Width L Level Output Voltage H Level Output Voltage VILA VIHA IinA PWmin -0.3 1.4 250 3.6 0.3 VBAT+0.3 10 V V μA μs VILR VIHR IinR -0.3 0.75 ×VIO 0.25 ×VIO VBAT+0.3 1 V V μA VILI VIHI VhysI VOLI linI -0.3 0.75 ×VIO 0.05 ×VIO 0 0.25 ×VIO VBAT+0.3 0.3 1 V V V V μA Technical Note Condition SDA Pin, IOL=3 mA Input Voltage= 0.1×VIO ~ 0.9×VIO Input Voltage = 0.1×VIO ~ 0.9×VIO Input Voltage = 1.8V WPWMIN Pin 【GC1, GC2】 (Sensor Gain Control CMOS Output Pin) VOLS VOHS VoS-0.2 0.2 V V IOL=1mA IOH=1mA ●Power Dissipation (On the ROHM’s standard board) 1.6 1.4 1280mW Power Dissipation Pd （W) 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 25 50 75 100 125 150 Ta(℃) Information of the ROHM’s standard board Material: glass-epoxy Size : 50mm×58mm×1.75mm(8th layer) Wiring pattern figure Refer to after page. Fig.1 Power Dissipation www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 5/45 2010.07 - Rev.A BD6083GUL ●Block Diagram / Application Circuit Example 1 6LED + ALC +PWM 1μF/10V 1μF/10V CPGND Technical Note C1N C2N C1P C2P A4 C5 B5 C6 A5 VBAT VBATCP B6 VBAT1 VBAT2 F4 F5 Charge Pump x1 / x1.5 / x2 VOUT D6 1μF/10V 2.2µF/10V A2 LED1 Charge Pump Mode Control VIO Voltage VIO OVP LED terminal voltage feedback LED2 B1 LED3 B2 D5 LED4 C2 6LED Main Back Light RESETB SCL LED5 B4 D1 LED6 C4 From CPU SDA Level D4 I C interface Digital Control 2 TSD D2 I/O Shift LEDGND C1 From LCM W PWMIN B3 IREF LDO1 LDO1O 1μF/6.3V LDO2O 1μF/6.3V LDO3O E4 1μF/6.3V LDO4O 1μF/6.3V GND GC1 VCC SBIAS VREF F3 Vo Selectable Io=150mA E6 LDO2 Vo Selectable Io=150mA E5 BH1621FVC 1μF/6.3V IOUT GC2 SSENS LDO3 E1 Sensor I/F LED control (ALC) Vo Selectable Io=150mA SGND F2 LDO4 Vo Selectable Io=150mA E3 GC2 GC1 D3 E2 A6 F1 A1 F6 A3 Fig.2 Block Diagram / Application Circuit Example 1 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. T3 (Open) T1 (Open) GND1 T2 T4 6/45 2010.07 - Rev.A BD6083GUL ●Block Diagram / Application Circuit Example 2 5LED + ALC +PWM 1μF/10V 1μF/10V CPGND Technical Note C1N C2N C1P C2P A4 C5 B5 C6 A5 VBAT VBATCP B6 VBAT1 VBAT2 F4 F5 Charge Pump x1 / x1.5 / x2 VOUT D6 1μF/10V 2.2µF/10V A2 LED1 Charge Pump Mode Control VIO Voltage VIO OVP LED terminal voltage feedback LED2 B1 LED3 B2 D5 LED4 C2 5LED Main Back Light RESETB SCL LED5 B4 D1 LED6 C4 From CPU SDA Level D4 I C interface Digital Control 2 TSD D2 I/O Shift LEDGND C1 From LCM W PWMIN B3 IREF LDO1 LDO1O 1μF/6.3V LDO2O 1μF/6.3V LDO3O E4 1μF/6.3V LDO4O 1μF/6.3V GND GC1 VCC SBIAS VREF F3 Vo Selectable Io=150mA E6 LDO2 Vo Selectable Io=150mA E5 BH1621FVC 1μF/6.3V IOUT GC2 SSENS LDO3 E1 Sensor I/F LED control (ALC) Vo Selectable Io=150mA SGND F2 LDO4 Vo Selectable Io=150mA E3 GC2 GC1 D3 E2 A6 F1 A1 F6 A3 Fig.3 Block Diagram / Application Circuit Example 2 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. T3 (Open) T1 (Open) GND1 T2 T4 7/45 2010.07 - Rev.A BD6083GUL ●Block Diagram / Application Circuit Example 3 4LED + 2LED + ALC +PWM 1μF/10V 1μF/10V CPGND Technical Note C1N C2N C1P C2P A4 C5 B5 C6 A5 VBAT VBATCP B6 VBAT1 VBAT2 F4 F5 Charge Pump x1 / x1.5 / x2 VOUT D6 1μF/10V 2.2µF/10V A2 LED1 Charge Pump Mode Control VIO Voltage VIO OVP LED terminal voltage feedback LED2 B1 LED3 B2 6LED Main Back Light D5 LED4 C2 RESETB SCL LED5 B4 D1 LED6 C4 From CPU SDA Level D4 I2C interface Digital Control TSD D2 I/O 2LED Sub Back Light or Key Back Light Shift LEDGND C1 From LCM W PWMIN B3 IREF LDO1 LDO1O 1μF/6.3V LDO2O 1μF/6.3V LDO3O E4 1μF/6.3V LDO4O 1μF/6.3V GND GC1 VCC SBIAS VREF F3 Vo Selectable Io=150mA E6 LDO2 Vo Selectable Io=150mA E5 BH1621FVC 1μF/6.3V IOUT GC2 SSENS LDO3 E1 Sensor I/F LED control (ALC) Vo Selectable Io=150mA SGND F2 LDO4 Vo Selectable Io=150mA E3 GC2 GC1 D3 E2 A6 F1 A1 F6 A3 Fig.4 Block Diagram / Application Circuit Example 3 . www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. T3 (Open) T1 (Open) GND1 T2 T4 8/45 2010.07 - Rev.A BD6083GUL ●Pin Arrangement ［Bottom View］ Technical Note F T4 SGND SBIAS VBAT1 VBAT2 T3 E SSENS GC1 LDO4O LDO3O LDO2O LDO1O D LED5 LED6 GC2 index SDA VIO VOUT C LEDGND LED4 SCL C1P C2P B LED2 LED3 WPWMIN RESETB C2N VBATCP A T1 LED1 GND1 C1N CPGND T2 1 Total 35 Ball 2 3 4 5 6 Fig.5 Pin Arrangement www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 9/45 2010.07 - Rev.A BD6083GUL ●Package Outline VCSP50L3 CSP small package SIZE : 3.15mm x 3.15mm (A difference in public:X,Y Both ±0.05mm) Height : 0.55mm max A ball pitch : 0.5 mm Technical Note (Unit : mm) Fig.6 Package Outline www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 10/45 2010.07 - Rev.A BD6083GUL ●Pin Functions No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 Ball No. B6 F4 F5 A1 A6 F6 F1 D5 B4 D4 C4 A5 A3 C1 A4 C5 B5 C6 D6 A2 B1 B2 C2 D1 D2 F3 E1 E2 D3 F2 B3 E6 E5 E4 E3 Pin Name VBATCP VBAT1 VBAT2 T1 T2 T3 T4 VIO RESETB SDA SCL CPGND GND1 LEDGND C1N C1P C2N C2P VOUT LED1 LED2 LED3 LED4 LED5 LED6 SBIAS SSENS GC1 GC2 SGND WPWMIN LDO1O LDO2O LDO3O LDO4O I/O O I O I I I/O I I/O I/O I/O I/O O I I I I I I O I O O I O O O O ESD Diode For Power VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT VBAT For Ground GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND Functions Battery is connected Battery is connected Battery is connected Test Output Pin(Open) Test Input Pin (short to Ground) Test Output Pin(Open) Test Input Pin (short to Ground) I/O Power supply is connected Reset input (L: reset, H: reset cancel) I C data input / output I2C clock input Ground Ground Ground Charge Pump capacitor is connected Charge Pump capacitor is connected Charge Pump capacitor is connected Charge Pump capacitor is connected Charge Pump output pin 2 Technical Note Equivalent Circuit A A A N S M S C H I H B B B F G F G A E E E E E E Q N X X B L Q Q Q Q LED is connected 1 for LCD Back Light LED is connected 2 for LCD Back Light LED is connected 3 for LCD Back Light LED is connected 4 for LCD Back Light LED is connected 5 for LCD Back Light LED is connected 6 for LCD Back Light Bias output for the Ambient Light Sensor Ambient Light Sensor input Ambient Light Sensor gain control output 1 Ambient Light Sensor gain control output 2 Ground External PWM input for Back Light * LDO1 output pin LDO2 output pin LDO3 output pin LDO4 output pin * A setup of a register is separately necessary to make it effective. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 11/45 2010.07 - Rev.A BD6083GUL ●Equivalent Circuit Technical Note A B VBAT C VBAT E F VBAT G H VBAT VIO I VBAT VIO J VBAT VIO L VBAT VBAT M VBAT VBAT N VBAT Q VBAT VBAT R VBAT VBAT S VBAT VBAT U V VBAT VBAT W VBAT VIO X VoS VBAT Y VIO VBAT Fig.7 Equivalent Circuit www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 12/45 2010.07 - Rev.A BD6083GUL ●I2C BUS Format 2 The writing/reading operation is based on the I C slave standard. ・Slave address A7 A6 A5 A4 A3 A2 A1 1 1 1 0 1 1 0 Technical Note R/W 1/0 ・Bit Transfer SCL transfers 1-bit data during H. SCL cannot change signal of SDA during H at the time of bit transfer. If SDA changes while SCL is H, START conditions or STOP conditions will occur and it will be interpreted as a control signal. SDA SCL SDA a state of stability： SDA It can change Data are effective Fig.8 ・START and STOP condition When SDA and SCL are H, data is not transferred on the I2C- bus. This condition indicates, if SDA changes from H to L while SCL has been H, it will become START (S) conditions, and an access start, if SDA changes from L to H while SCL has been H, it will become STOP (P) conditions and an access end. SDA SCL S START condition P STOP condition Fig.9 ・Acknowledge It transfers data 8 bits each after the occurrence of START condition. A transmitter opens SDA after transfer 8bits data, and a receiver returns the acknowledge signal by setting SDA to L. DATA OUTPUT BY TRANSMITTER not acknowledge DATA OUTPUT BY RECEIVER acknowledge SCL 1 2 8 clock pulse for acknowledgement 9 S START condition Fig.10 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 13/45 2010.07 - Rev.A BD6083GUL Technical Note ・Writing protocol A register address is transferred by the next 1 byte that transferred the slave address and the write-in command. The 3rd byte writes data in the internal register written in by the 2nd byte, and after 4th byte or, the increment of register address is carried out automatically. However, when a register address turns into the last address, it is set to 00h by the next transmission. After the transmission end, the increment of the address is carried out. *1 *1 S X X X X X X X 0 A A7 A6 A5 A4 A3 A2 A1 A0 A D7 D6 D5 D4 D3 D2 D1 D0 A slave address R/W=0(write) from master to slave from slave to master register address DATA D7 D6 D5 D4 D3 D2 D1 D0 A P DATA register address increment A=acknowledge(SDA LOW) A=not acknowledge(SDA HIGH) S=START condition P=STOP condition *1: Write Timing register address increment Fig.11 ・Reading protocol It reads from the next byte after writing a slave address and R/W bit. The register to read considers as the following address accessed at the end, and the data of the address that carried out the increment is read after it. If an address turns into the last address, the next byte will read out 00h. After the transmission end, the increment of the address is carried out. SXXXX XXX slave address R/W=1(read) 1 A D7 D6 D5 D4 D3 D2 D1 D0 A DATA register address increment A=acknowledge(SDA LOW) A=not acknowledge(SDA HIGH) S=START condition P=STOP condition D7 D6 D5 D4 D3 D2 D1 D0 A P DATA register address increment from master to slave from slave to master Fig.12 ・Multiple reading protocols After specifying an internal address, it reads by repeated START condition and changing the data transfer direction. The data of the address that carried out the increment is read after it. If an address turns into the last address, the next byte will read out 00h. After the transmission end, the increment of the address is carried out. S X X X X X X X 0 A A7 A6 A5 A4 A3 A2 A1 A0 A Sr X X X X X X X 1 A slave address R/W=0(write) register address slave address R/W=1(read) D7 D6 D5 D4 D3D2 D1D0 A DATA register address increment from master to slave from slave to master D7D6 D5D4D3D2D1D0 A P DATA register address increment A=acknowledge(SDA LOW) A=not acknowledge(SDA HIGH) S=START condition P=STOP condition Sr=repeated START condition Fig.13 As for reading protocol and multiple reading protocols, please do A(not acknowledge) after doing the final reading operation. It stops with read when ending by A(acknowledge), and SDA stops in the state of Low when the reading data of that time is 0. However, this state returns usually when SCL is moved, data is read, and A (not acknowledge) is done. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 14/45 2010.07 - Rev.A BD6083GUL ●Timing Diagram SDA Technical Note t BUF t LOW t SU;DAT t HD;STA SCL t SU;STO P S t HD;STA S t HD;DAT t HIGH Sr t SU;STA Fig.14 ●Electrical Characteristics(Unless otherwise specified, Ta=25 oC, VBAT=3.6V, VIO=1.8V) Standard-mode Parameter Symbol Min. Typ. Max. 【I2C BUS format】 Fast-mode Min. Typ. Max. Unit SCL clock frequency LOW period of the SCL clock HIGH period of the SCL clock Hold time (repeated) START condition After this period, the first clock is generated Set-up time for a repeated START condition Data hold time Data set-up time Set-up time for STOP condition Bus free time between a STOP and START condition fSCL tLOW tHIGH tHD;STA tSU;STA tHD;DAT tSU;DAT tSU;STO tBUF 0 4.7 4.0 4.0 4.7 0 250 4.0 4.7 - 100 3.45 - 0 1.3 0.6 0.6 0.6 0 100 0.6 1.3 - 400 0.9 - kHz μs μs μs μs μs ns μs μs www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 15/45 2010.07 - Rev.A BD6083GUL ●Register List Address W/R 00h 01h 02h 03h 04h 05h 06h 07h 08h 09h 0Ah 0Bh 0Ch 0Dh 0Eh 0Fh 10h 11h 12h 13h W W W W W W W W W R W W W Register data D7 WPWMEN THL (3) D6 ALCEN IMLED(6) IW5(6) IW6(6) THL (2) ADCYC IU0 (6) IU1 (6) D5 IMLED(5) IW5(5) IW6(5) THL (1) IU0 (5) IU1 (5) D4 IMLED(4) IW5(4) IW6(4) THL (0) GAIN IU0 (4) IU1 (4) D3 W6MD W6EN IMLED(3) IW5(3) IW6(3) TLH (3) CRV AMB (3) IU0 (3) IU1 (3) LDO4EN D2 W5MD W5EN IMLED(2) IW5(2) IW6(2) TLH (2) STEP (2) AMB (2) IU0 (2) IU1 (2) LDO3EN D1 W4MD IMLED(1) IW5(1) IW6(1) TLH (1) MDCIR STEP (1) AMB (1) IU0 (1) IU1 (1) LDO2EN D0 SFTRST MLEDMD MLEDEN IMLED(0) IW5(0) IW6(0) TLH (0) SBIASON STEP (0) AMB (0) IU0 (0) IU1 (0) LDO1EN Technical Note Function Software Reset LED Pin function setting LED Power Control Main group current setting LED5 current setting LED6 current setting Main Current transition Measurement mode setting ALC Slope curve setup Ambient level LED Current at Ambient level 0h (ALC) LED Current max (ALC) LDO Power Control LDO1 Vout Control 14h W LDO2VSEL3 LDO2VSEL2 LDO2VSEL1 LDO2VSEL0 LDO1VSEL3 LDO1VSEL2 LDO1VSEL1 LDO1VSEL0 LDO2 Vout Control LDO3 Vout Control 15h W LDO4VSEL3 LDO4VSEL2 LDO4VSEL1 LDO4VSEL0 LDO3VSEL3 LDO3VSEL2 LDO3VSEL1 LDO3VSEL0 LDO4 Vout Control Input "0” for "-". A free address has the possibility to assign it to the register for the test. Access to the register for the test and the undefined register is prohibited. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 16/45 2010.07 - Rev.A BD6083GUL ●Register Map Address 00h Address Technical Note < Software Reset > R/W W 00h Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 SFTRST 0 00h Initial Value Bit[7:1] : Bit0 : (Not used) SFTRST Software Reset “0” : Reset cancel “1” : Reset(All register initializing) Refer to “Reset” for detail. Address 01h < LED Pin function setting> Address R/W Bit7 Bit6 01h Initial Value Bit[7:4] : Bit3 : W 02h - Bit5 - Bit4 - Bit3 W6MD 0 Bit2 W5MD 0 Bit1 W4MD 1 Bit0 MLEDMD 0 (Not used) W6MD LED6 control setting (individual / Main group) “0” : LED6 individual control (Initial Value) “1” : LED6 Main group control Refer to “LED Driver” for detail. W5MD LED5 control setting (individual / Main group) “0” : LED5 individual control (Initial Value) “1” : LED5 Main group control Refer to “LED Driver” for detail. W4MD LED4 Control Board setting (unuse / use) “0” : LED4 unuse “1” : LED4 use (Main group Control) (Initial Value) Refer to “LED Driver” for detail. MLEDMD Main group setting (Normal / ALC) “0” : Main group Normal Mode(ALCNon-reflection)(Initial Value) “1” : Main group ALC Mode Refer to “(1) Auto Luminous Control ON/OFF” of “ALC” for detail. Bit2 : Bit1 : Bit0 : Set up a fixation in every design because it isn't presumed W*PW that it is changed dynamically. And, do the setup of W*PW when each LED is Off. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 17/45 2010.07 - Rev.A BD6083GUL Address 02h < LED Power Control> Address R/W Bit7 Bit6 02h Initial Value Bit7 : W 00h WPWMEN 0 ALCEN 0 Technical Note Bit5 0 Bit4 0 Bit3 W6EN 0 Bit2 W5EN 0 Bit1 0 Bit0 MLEDEN 0 WPWMEN External PWM Input “WPWMIN” terminal Enable Control (Valid/Invalid) “0” : External PWM input invalid (Initial Value) “1” : External PWM input valid Refer to “(10) Current Adjustment” of “ALC” for detail. ALCEN ALC function Control (ON/OFF) “0” : ALC block OFF (Initial Value) “1” : ALC block ON (Ambient Measurement) Refer to “(1) Auto Luminous Control ON/OFF” of “ALC” for detail. Bit6 : Bit[5:4] : (Not used) Bit3 : W6EN LED6 Control (ON/OFF) “0” : LED6 OFF (Initial Value) “1” : LED6 ON(individual control) Refer to “LED Driver” for detail. W5EN LED5 Control (ON/OFF) “0” : LED5 OFF (Initial Value) “1” : LED5 ON(individual control) Refer to “LED Driver” for detail. (Not used) MLEDEN Main group LED Control (ON/OFF) “0” : Main group OFF (Initial Value) “1” : Main group ON Refer to “(1) Auto Luminous Control ON/OFF” of “ALC” for detail. Bit2 : Bit1 : Bit0 : www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 18/45 2010.07 - Rev.A BD6083GUL Address 03h < Main group LED Current setting(Normal Mode) > Address R/W Bit7 Bit6 Bit5 Bit4 03h Initial Value Bit7 : Bit[6:0] : W 00h IMLED(6) 0 IMLED(5) 0 IMLED(4) 0 Technical Note Bit3 IMLED(3) 0 Bit2 IMLED(2) 0 Bit1 IMLED(1) 0 Bit0 IMLED(0) 0 (Not used) IMLED (6:0) “0000000” : “0000001” : “0000010” : “0000011” : “0000100” : “0000101” : “0000110” : “0000111” : “0001000” : “0001001” : “0001010” : “0001011” : “0001100” : “0001101” : “0001110” : “0001111” : “0010000” : “0010001” : “0010010” : “0010011” : “0010100” : “0010101” : “0010110” : “0010111” : “0011000” : “0011001” : “0011010” : “0011011” : “0011100” : “0011101” : “0011110” : “0011111” : “0100000” : “0100001” : “0100010” : “0100011” : “0100100” : “0100101” : “0100110” : “0100111” : “0101000” : “0101001” : “0101010” : “0101011” : “0101100” : “0101101” : “0101110” : “0101111” : “0110000” : “0110001” : “0110010” : “0110011” : “0110100” : “0110101” : “0110110” : “0110111” : “0111000” : “0111001” : “0111010” : “0111011” : “0111100” : “0111101” : “0111110” : “0111111” : Main Group LED Current Setting at non-ALC mode 0.2 mA (Initial Value) 0.4 mA 0.6 mA 0.8 mA 1.0 mA 1.2 mA 1.4 mA 1.6 mA 1.8 mA 2.0 mA 2.2 mA 2.4 mA 2.6 mA 2.8 mA 3.0 mA 3.2 mA 3.4 mA 3.6 mA 3.8 mA 4.0 mA 4.2 mA 4.4 mA 4.6 mA 4.8 mA 5.0 mA 5.2 mA 5.4 mA 5.6 mA 5.8 mA 6.0 mA 6.2 mA 6.4 mA 6.6 mA 6.8 mA 7.0 mA 7.2 mA 7.4 mA 7.6 mA 7.8 mA 8.0 mA 8.2 mA 8.4 mA 8.6 mA 8.8 mA 9.0 mA 9.2 mA 9.4 mA 9.6 mA 9.8 mA 10.0 mA 10.2 mA 10.4 mA 10.6 mA 10.8 mA 11.0 mA 11.2 mA 11.4 mA 11.6 mA 11.8 mA 12.0 mA 12.2 mA 12.4 mA 12.6 mA 12.8 mA “1000000” : “1000001” : “1000010” : “1000011” : “1000100” : “1000101” : “1000110” : “1000111” : “1001000” : “1001001” : “1001010” : “1001011” : “1001100” : “1001101” : “1001110” : “1001111” : “1010000” : “1010001” : “1010010” : “1010011” : “1010100” : “1010101” : “1010110” : “1010111” : “1011000” : “1011001” : “1011010” : “1011011” : “1011100” : “1011101” : “1011110” : “1011111” : “1100000” : “1100001” : “1100010” : “1100011” : “1100100” : “1100101” : “1100110” : “1100111” : “1101000” : “1101001” : “1101010” : “1101011” : “1101100” : “1101101” : “1101110” : “1101111” : “1110000” : “1110001” : “1110010” : “1110011” : “1110100” : “1110101” : “1110110” : “1110111” : “1111000” : “1111001” : “1111010” : “1111011” : “1111100” : “1111101” : “1111110” : “1111111” : 13.0 mA 13.2 mA 13.4 mA 13.6 mA 13.8 mA 14.0 mA 14.2 mA 14.4 mA 14.6 mA 14.8 mA 15.0 mA 15.2 mA 15.4 mA 15.6 mA 15.8 mA 16.0 mA 16.2 mA 16.4 mA 16.6 mA 16.8 mA 17.0 mA 17.2 mA 17.4 mA 17.6 mA 17.8 mA 18.0 mA 18.2 mA 18.4 mA 18.6 mA 18.8 mA 19.0 mA 19.2 mA 19.4 mA 19.6 mA 19.8 mA 20.0 mA 20.2 mA 20.4 mA 20.6 mA 20.8 mA 21.0 mA 21.2 mA 21.4 mA 21.6 mA 21.8 mA 22.0 mA 22.2 mA 22.4 mA 22.6 mA 22.8 mA 23.0 mA 23.2 mA 23.4 mA 23.6 mA 23.8 mA 24.0 mA 24.2 mA 24.4 mA 24.6 mA 24.8 mA 25.0 mA 25.2 mA 25.4 mA 25.6 mA www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 19/45 2010.07 - Rev.A BD6083GUL Address 05h < LED5 Current setting(Independence control) > Address 05h Initial Value Bit7 : Bit[6:0] : R/W W 00h Bit7 Bit6 IW5(6) 0 Bit5 IW5(5) 0 Bit4 IW5(4) 0 Bit3 IW5(3) 0 Bit2 IW5(2) 0 Technical Note Bit1 IW5(1) 0 Bit0 IW5(0) 0 (Not used) IW5 (6:0) “0000000” : “0000001” : “0000010” : “0000011” : “0000100” : “0000101” : “0000110” : “0000111” : “0001000” : “0001001” : “0001010” : “0001011” : “0001100” : “0001101” : “0001110” : “0001111” : “0010000” : “0010001” : “0010010” : “0010011” : “0010100” : “0010101” : “0010110” : “0010111” : “0011000” : “0011001” : “0011010” : “0011011” : “0011100” : “0011101” : “0011110” : “0011111” : “0100000” : “0100001” : “0100010” : “0100011” : “0100100” : “0100101” : “0100110” : “0100111” : “0101000” : “0101001” : “0101010” : “0101011” : “0101100” : “0101101” : “0101110” : “0101111” : “0110000” : “0110001” : “0110010” : “0110011” : “0110100” : “0110101” : “0110110” : “0110111” : “0111000” : “0111001” : “0111010” : “0111011” : “0111100” : “0111101” : “0111110” : “0111111” : LED5 Current setting 0.2 mA (Initial Value) 0.4 mA 0.6 mA 0.8 mA 1.0 mA 1.2 mA 1.4 mA 1.6 mA 1.8 mA 2.0 mA 2.2 mA 2.4 mA 2.6 mA 2.8 mA 3.0 mA 3.2 mA 3.4 mA 3.6 mA 3.8 mA 4.0 mA 4.2 mA 4.4 mA 4.6 mA 4.8 mA 5.0 mA 5.2 mA 5.4 mA 5.6 mA 5.8 mA 6.0 mA 6.2 mA 6.4 mA 6.6 mA 6.8 mA 7.0 mA 7.2 mA 7.4 mA 7.6 mA 7.8 mA 8.0 mA 8.2 mA 8.4 mA 8.6 mA 8.8 mA 9.0 mA 9.2 mA 9.4 mA 9.6 mA 9.8 mA 10.0 mA 10.2 mA 10.4 mA 10.6 mA 10.8 mA 11.0 mA 11.2 mA 11.4 mA 11.6 mA 11.8 mA 12.0 mA 12.2 mA 12.4 mA 12.6 mA 12.8 mA “1000000” : “1000001” : “1000010” : “1000011” : “1000100” : “1000101” : “1000110” : “1000111” : “1001000” : “1001001” : “1001010” : “1001011” : “1001100” : “1001101” : “1001110” : “1001111” : “1010000” : “1010001” : “1010010” : “1010011” : “1010100” : “1010101” : “1010110” : “1010111” : “1011000” : “1011001” : “1011010” : “1011011” : “1011100” : “1011101” : “1011110” : “1011111” : “1100000” : “1100001” : “1100010” : “1100011” : “1100100” : “1100101” : “1100110” : “1100111” : “1101000” : “1101001” : “1101010” : “1101011” : “1101100” : “1101101” : “1101110” : “1101111” : “1110000” : “1110001” : “1110010” : “1110011” : “1110100” : “1110101” : “1110110” : “1110111” : “1111000” : “1111001” : “1111010” : “1111011” : “1111100” : “1111101” : “1111110” : “1111111” : 13.0 mA 13.2 mA 13.4 mA 13.6 mA 13.8 mA 14.0 mA 14.2 mA 14.4 mA 14.6 mA 14.8 mA 15.0 mA 15.2 mA 15.4 mA 15.6 mA 15.8 mA 16.0 mA 16.2 mA 16.4 mA 16.6 mA 16.8 mA 17.0 mA 17.2 mA 17.4 mA 17.6 mA 17.8 mA 18.0 mA 18.2 mA 18.4 mA 18.6 mA 18.8 mA 19.0 mA 19.2 mA 19.4 mA 19.6 mA 19.8 mA 20.0 mA 20.2 mA 20.4 mA 20.6 mA 20.8 mA 21.0 mA 21.2 mA 21.4 mA 21.6 mA 21.8 mA 22.0 mA 22.2 mA 22.4 mA 22.6 mA 22.8 mA 23.0 mA 23.2 mA 23.4 mA 23.6 mA 23.8 mA 24.0 mA 24.2 mA 24.4 mA 24.6 mA 24.8 mA 25.0 mA 25.2 mA 25.4 mA 25.6 mA www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 20/45 2010.07 - Rev.A BD6083GUL Address 06h < LED6 Current setting(Independence control) > Address R/W Bit7 Bit6 Bit5 Bit4 06h Initial Value Bit7 : Bit[6:0] : W 00h IW6(6) 0 IW6(5) 0 IW6(4) 0 Technical Note Bit3 IW6(3) 0 Bit2 IW6(2) 0 Bit1 IW6(1) 0 Bit0 IW6(0) 0 (Not used) IW6 (6:0) “0000000” : “0000001” : “0000010” : “0000011” : “0000100” : “0000101” : “0000110” : “0000111” : “0001000” : “0001001” : “0001010” : “0001011” : “0001100” : “0001101” : “0001110” : “0001111” : “0010000” : “0010001” : “0010010” : “0010011” : “0010100” : “0010101” : “0010110” : “0010111” : “0011000” : “0011001” : “0011010” : “0011011” : “0011100” : “0011101” : “0011110” : “0011111” : “0100000” : “0100001” : “0100010” : “0100011” : “0100100” : “0100101” : “0100110” : “0100111” : “0101000” : “0101001” : “0101010” : “0101011” : “0101100” : “0101101” : “0101110” : “0101111” : “0110000” : “0110001” : “0110010” : “0110011” : “0110100” : “0110101” : “0110110” : “0110111” : “0111000” : “0111001” : “0111010” : “0111011” : “0111100” : “0111101” : “0111110” : “0111111” : LED6 Current setting 0.2 mA (Initial Value) 0.4 mA 0.6 mA 0.8 mA 1.0 mA 1.2 mA 1.4 mA 1.6 mA 1.8 mA 2.0 mA 2.2 mA 2.4 mA 2.6 mA 2.8 mA 3.0 mA 3.2 mA 3.4 mA 3.6 mA 3.8 mA 4.0 mA 4.2 mA 4.4 mA 4.6 mA 4.8 mA 5.0 mA 5.2 mA 5.4 mA 5.6 mA 5.8 mA 6.0 mA 6.2 mA 6.4 mA 6.6 mA 6.8 mA 7.0 mA 7.2 mA 7.4 mA 7.6 mA 7.8 mA 8.0 mA 8.2 mA 8.4 mA 8.6 mA 8.8 mA 9.0 mA 9.2 mA 9.4 mA 9.6 mA 9.8 mA 10.0 mA 10.2 mA 10.4 mA 10.6 mA 10.8 mA 11.0 mA 11.2 mA 11.4 mA 11.6 mA 11.8 mA 12.0 mA 12.2 mA 12.4 mA 12.6 mA 12.8 mA “1000000” : “1000001” : “1000010” : “1000011” : “1000100” : “1000101” : “1000110” : “1000111” : “1001000” : “1001001” : “1001010” : “1001011” : “1001100” : “1001101” : “1001110” : “1001111” : “1010000” : “1010001” : “1010010” : “1010011” : “1010100” : “1010101” : “1010110” : “1010111” : “1011000” : “1011001” : “1011010” : “1011011” : “1011100” : “1011101” : “1011110” : “1011111” : “1100000” : “1100001” : “1100010” : “1100011” : “1100100” : “1100101” : “1100110” : “1100111” : “1101000” : “1101001” : “1101010” : “1101011” : “1101100” : “1101101” : “1101110” : “1101111” : “1110000” : “1110001” : “1110010” : “1110011” : “1110100” : “1110101” : “1110110” : “1110111” : “1111000” : “1111001” : “1111010” : “1111011” : “1111100” : “1111101” : “1111110” : “1111111” : 13.0 mA 13.2 mA 13.4 mA 13.6 mA 13.8 mA 14.0 mA 14.2 mA 14.4 mA 14.6 mA 14.8 mA 15.0 mA 15.2 mA 15.4 mA 15.6 mA 15.8 mA 16.0 mA 16.2 mA 16.4 mA 16.6 mA 16.8 mA 17.0 mA 17.2 mA 17.4 mA 17.6 mA 17.8 mA 18.0 mA 18.2 mA 18.4 mA 18.6 mA 18.8 mA 19.0 mA 19.2 mA 19.4 mA 19.6 mA 19.8 mA 20.0 mA 20.2 mA 20.4 mA 20.6 mA 20.8 mA 21.0 mA 21.2 mA 21.4 mA 21.6 mA 21.8 mA 22.0 mA 22.2 mA 22.4 mA 22.6 mA 22.8 mA 23.0 mA 23.2 mA 23.4 mA 23.6 mA 23.8 mA 24.0 mA 24.2 mA 24.4 mA 24.6 mA 24.8 mA 25.0 mA 25.2 mA 25.4 mA 25.6 mA www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 21/45 2010.07 - Rev.A BD6083GUL Address 09h < Main Current slope time setting > Address R/W Bit7 Bit6 Bit5 09h Initial Value Bit[7:4] : W C7h THL(3) 1 THL(2) 1 THL(1) 0 Technical Note Bit4 THL(0) 0 Bit3 TLH(3) 0 Bit2 TLH(2) 1 Bit1 TLH(1) 1 Bit0 TLH(0) 1 THL (3:0) Main LED current Down transition per 0.2mA step “0000” : 0.256 ms “0001” : 0.512 ms “0010” : 1.024 ms “0011” : 2.048 ms “0100” : 4.096 ms “0101” : 8.192 ms “0110” : 16.38 ms “0111” : 32.77 ms “1000” : 65.54 ms “1001” : 131.1 ms “1010” : 196.6 ms “1011” : 262.1 ms “1100” : 327.7 ms (Initial Value) “1101” : 393.2 ms “1110” : 458.8 ms “1111” : 524.3 ms Setting time is counted based on the switching frequency of Charge Pump. The above value becomes the value of the Typ (1MHz) time. Refer to “(8) Slope Process” of “ALC” for detail. Bit[3:0] : TLH (3:0) Main LED current Up transition per 0.2mA step “0000” : 0.256 ms “0001” : 0.512 ms “0010” : 1.024 ms “0011” : 2.048 ms “0100” : 4.096 ms “0101” : 8.192 ms “0110” : 16.38 ms “0111” : 32.77 ms (Initial Value) “1000” : 65.54 ms “1001” : 131.1 ms “1010” : 196.6 ms “1011” : 262.1 ms “1100” : 327.7 ms “1101” : 393.2 ms “1110” : 458.8 ms “1111” : 524.3 ms Setting time is counted based on the switching frequency of Charge Pump. The above value becomes the value of the Typ (1MHz) time. Refer to “(8) Slope Process” of “ALC” for detail. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 22/45 2010.07 - Rev.A BD6083GUL Address 0Ah < ALC mode setting > Address R/W Bit7 Bit6 0Ah Initial Value Bit7 : Bit6 : W 01h ADCYC 0 Technical Note Bit5 - Bit4 GAIN 0 Bit3 - Bit2 - Bit1 MDCIR 0 Bit0 SBIASON 1 (Not used) ADCYC ADC Measurement Cycle “0” : 0.52 s (Initial Value) “1” : 1.05 s Refer to “(4) A/D conversion” of “ALC” for detail. (Not used) GAIN Sensor Gain Switching Function Control “0” : Auto Change (Initial Value) “1” : Fixed Refer to “(3) Gain control” of “ALC” for detail. (Not used) MDCIR LED Current Reset Select by Mode Change “0” : LED current non-reset when mode change (Initial Value) “1” : LED current reset when mode change Refer to “(9) LED current reset when mode change” of “ALC” for detail. SBIASON “0” : Measurement cycle synchronous “1” : Usually ON (at ALCEN=1) (Initial Value) Refer to “(4) A/D conversion” of “ALC” for detail. Bit5 : Bit4 : Bit[3:2] : Bit1 : Bit0 : Address 0Bh < ALC slope curve setting > Address R/W Bit7 Bit6 0Bh Initial Value Bit[7:4] : Bit3 : W 00h - Bit5 - Bit4 - Bit3 CRV 0 Bit2 STEP (2) 0 Bit1 STEP (1) 0 Bit0 STEP (0) 1 (Not used) CRV Brightness Current Conversion Curve Type “0” Log curve (Initial Value) “1” linear STEP (2:0) Step At the time of Brightness Current Conversion “000” : 1.0mA “001” : 1.1mA (Initial Value) “010” : 1.2mA “011” : 1.3mA “100” : 1.6mA “101” : 1.7mA “110” : 1.8mA “111” : 1.9mA Refer to “(7) Convert LED Current” of “ALC” for detail. Bit[2:0] : www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 23/45 2010.07 - Rev.A BD6083GUL Address 0Ch < Ambient level (Read Only) > Address R/W Bit7 Bit6 0Ch R Initial Value (00h) Bit[7:4] : Bit[3:0] : Technical Note Bit5 - Bit4 - Bit3 AMB(3) (0) Bit2 AMB(2) (0) Bit1 AMB(1) (0) Bit0 AMB(0) (0) (Not used) AMB (3:0) “0000” : “0001” : “0010” : “0011” : “0100” : “0101” : “0110” : “0111” : “1000” : “1001” : “1010” : “1011” : “1100” : “1101” : “1110” : “1111” : Ambient Level 0h (Initial Value) 1h 2h 3h 4h 5h 6h 7h 8h 9h Ah Bh Ch Dh Eh Fh It begins to read Ambient data through I2C, and possible. To the first AD measurement completion, it is AMB(3:0)=0000. Refer to “(6) Ambient level detection” of “ALC” for detail. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 24/45 2010.07 - Rev.A BD6083GUL Address 0Dh < Ambient LED Current setting > Address R/W Bit7 Bit6 Bit5 0Dh Initial Value Bit7 : Bit[6:0] : W 13 IU0 (6) 0 IU0 (5) 0 Technical Note Bit4 IU0 (4) 1 Bit3 IU0 (3) 0 Bit2 IU0 (2) 0 Bit1 IU0 (1) 1 Bit0 IU0 (0) 1 (Not used) IU0 (6:0) “0000000” : “0000001” : “0000010” : “0000011” : “0000100” : “0000101” : “0000110” : “0000111” : “0001000” : “0001001” : “0001010” : “0001011” : “0001100” : “0001101” : “0001110” : “0001111” : “0010000” : “0010001” : “0010010” : “0010011” : “0010100” : “0010101” : “0010110” : “0010111” : “0011000” : “0011001” : “0011010” : “0011011” : “0011100” : “0011101” : “0011110” : “0011111” : “0100000” : “0100001” : “0100010” : “0100011” : “0100100” : “0100101” : “0100110” : “0100111” : “0101000” : “0101001” : “0101010” : “0101011” : “0101100” : “0101101” : “0101110” : “0101111” : “0110000” : “0110001” : “0110010” : “0110011” : “0110100” : “0110101” : “0110110” : “0110111” : “0111000” : “0111001” : “0111010” : “0111011” : “0111100” : “0111101” : “0111110” : “0111111” : Main Current at Ambient Level for 0h 0.2 mA 0.4 mA 0.6 mA 0.8 mA 1.0 mA 1.2 mA 1.4 mA 1.6 mA 1.8 mA 2.0 mA 2.2 mA 2.4 mA 2.6 mA 2.8 mA 3.0 mA 3.2 mA 3.4 mA 3.6 mA 3.8 mA 4.0 mA (Initial Value) 4.2 mA 4.4 mA 4.6 mA 4.8 mA 5.0 mA 5.2 mA 5.4 mA 5.6 mA 5.8 mA 6.0 mA 6.2 mA 6.4 mA 6.6 mA 6.8 mA 7.0 mA 7.2 mA 7.4 mA 7.6 mA 7.8 mA 8.0 mA 8.2 mA 8.4 mA 8.6 mA 8.8 mA 9.0 mA 9.2 mA 9.4 mA 9.6 mA 9.8 mA 10.0 mA 10.2 mA 10.4 mA 10.6 mA 10.8 mA 11.0 mA 11.2 mA 11.4 mA 11.6 mA 11.8 mA 12.0 mA 12.2 mA 12.4 mA 12.6 mA 12.8 mA “1000000” : “1000001” : “1000010” : “1000011” : “1000100” : “1000101” : “1000110” : “1000111” : “1001000” : “1001001” : “1001010” : “1001011” : “1001100” : “1001101” : “1001110” : “1001111” : “1010000” : “1010001” : “1010010” : “1010011” : “1010100” : “1010101” : “1010110” : “1010111” : “1011000” : “1011001” : “1011010” : “1011011” : “1011100” : “1011101” : “1011110” : “1011111” : “1100000” : “1100001” : “1100010” : “1100011” : “1100100” : “1100101” : “1100110” : “1100111” : “1101000” : “1101001” : “1101010” : “1101011” : “1101100” : “1101101” : “1101110” : “1101111” : “1110000” : “1110001” : “1110010” : “1110011” : “1110100” : “1110101” : “1110110” : “1110111” : “1111000” : “1111001” : “1111010” : “1111011” : “1111100” : “1111101” : “1111110” : “1111111” : 13.0 mA 13.2 mA 13.4 mA 13.6 mA 13.8 mA 14.0 mA 14.2 mA 14.4 mA 14.6 mA 14.8 mA 15.0 mA 15.2 mA 15.4 mA 15.6 mA 15.8 mA 16.0 mA 16.2 mA 16.4 mA 16.6 mA 16.8 mA 17.0 mA 17.2 mA 17.4 mA 17.6 mA 17.8 mA 18.0 mA 18.2 mA 18.4 mA 18.6 mA 18.8 mA 19.0 mA 19.2 mA 19.4 mA 19.6 mA 19.8 mA 20.0 mA 20.2 mA 20.4 mA 20.6 mA 20.8 mA 21.0 mA 21.2 mA 21.4 mA 21.6 mA 21.8 mA 22.0 mA 22.2 mA 22.4 mA 22.6 mA 22.8 mA 23.0 mA 23.2 mA 23.4 mA 23.6 mA 23.8 mA 24.0 mA 24.2 mA 24.4 mA 24.6 mA 24.8 mA 25.0 mA 25.2 mA 25.4 mA 25.6 mA www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 25/45 2010.07 - Rev.A BD6083GUL Address 0Eh < LED Max Current setting > Address R/W Bit7 Bit6 0Eh Initial Value Bit7 : Bit[6:0] : W 63h IU1 (6) 1 Technical Note Bit5 IU1 (5) 1 Bit4 IU1 (4) 0 Bit3 IU1 (3) 0 Bit2 IU1 (2) 0 Bit1 IU1 (1) 1 Bit0 IU1 (0) 1 (Not used) IU1 (6:0) “0000000” : “0000001” : “0000010” : “0000011” : “0000100” : “0000101” : “0000110” : “0000111” : “0001000” : “0001001” : “0001010” : “0001011” : “0001100” : “0001101” : “0001110” : “0001111” : “0010000” : “0010001” : “0010010” : “0010011” : “0010100” : “0010101” : “0010110” : “0010111” : “0011000” : “0011001” : “0011010” : “0011011” : “0011100” : “0011101” : “0011110” : “0011111” : “0100000” : “0100001” : “0100010” : “0100011” : “0100100” : “0100101” : “0100110” : “0100111” : “0101000” : “0101001” : “0101010” : “0101011” : “0101100” : “0101101” : “0101110” : “0101111” : “0110000” : “0110001” : “0110010” : “0110011” : “0110100” : “0110101” : “0110110” : “0110111” : “0111000” : “0111001” : “0111010” : “0111011” : “0111100” : “0111101” : “0111110” : “0111111” : LED Max Current (for ALC) 0.2 mA 0.4 mA 0.6 mA 0.8 mA 1.0 mA 1.2 mA 1.4 mA 1.6 mA 1.8 mA 2.0 mA 2.2 mA 2.4 mA 2.6 mA 2.8 mA 3.0 mA 3.2 mA 3.4 mA 3.6 mA 3.8 mA 4.0 mA 4.2 mA 4.4 mA 4.6 mA 4.8 mA 5.0 mA 5.2 mA 5.4 mA 5.6 mA 5.8 mA 6.0 mA 6.2 mA 6.4 mA 6.6 mA 6.8 mA 7.0 mA 7.2 mA 7.4 mA 7.6 mA 7.8 mA 8.0 mA 8.2 mA 8.4 mA 8.6 mA 8.8 mA 9.0 mA 9.2 mA 9.4 mA 9.6 mA 9.8 mA 10.0 mA 10.2 mA 10.4 mA 10.6 mA 10.8 mA 11.0 mA 11.2 mA 11.4 mA 11.6 mA 11.8 mA 12.0 mA 12.2 mA 12.4 mA 12.6 mA 12.8 mA “1000000” : “1000001” : “1000010” : “1000011” : “1000100” : “1000101” : “1000110” : “1000111” : “1001000” : “1001001” : “1001010” : “1001011” : “1001100” : “1001101” : “1001110” : “1001111” : “1010000” : “1010001” : “1010010” : “1010011” : “1010100” : “1010101” : “1010110” : “1010111” : “1011000” : “1011001” : “1011010” : “1011011” : “1011100” : “1011101” : “1011110” : “1011111” : “1100000” : “1100001” : “1100010” : “1100011” : “1100100” : “1100101” : “1100110” : “1100111” : “1101000” : “1101001” : “1101010” : “1101011” : “1101100” : “1101101” : “1101110” : “1101111” : “1110000” : “1110001” : “1110010” : “1110011” : “1110100” : “1110101” : “1110110” : “1110111” : “1111000” : “1111001” : “1111010” : “1111011” : “1111100” : “1111101” : “1111110” : “1111111” : 13.0 mA 13.2 mA 13.4 mA 13.6 mA 13.8 mA 14.0 mA 14.2 mA 14.4 mA 14.6 mA 14.8 mA 15.0 mA 15.2 mA 15.4 mA 15.6 mA 15.8 mA 16.0 mA 16.2 mA 16.4 mA 16.6 mA 16.8 mA 17.0 mA 17.2 mA 17.4 mA 17.6 mA 17.8 mA 18.0 mA 18.2 mA 18.4 mA 18.6 mA 18.8 mA 19.0 mA 19.2 mA 19.4 mA 19.6 mA 19.8 mA 20.0 mA (Initial Value) 20.2 mA 20.4 mA 20.6 mA 20.8 mA 21.0 mA 21.2 mA 21.4 mA 21.6 mA 21.8 mA 22.0 mA 22.2 mA 22.4 mA 22.6 mA 22.8 mA 23.0 mA 23.2 mA 23.4 mA 23.6 mA 23.8 mA 24.0 mA 24.2 mA 24.4 mA 24.6 mA 24.8 mA 25.0 mA 25.2 mA 25.4 mA 25.6 mA www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 26/45 2010.07 - Rev.A BD6083GUL Address 13h Address R/W Bit7 Bit6 13h Initial Value Bit[7:4] Bit3 : W/R 00h - Technical Note Bit5 - Bit4 - Bit3 LDO4EN 0 Bit2 LDO3EN 0 Bit1 LDO2EN 0 Bit0 LDO1EN 0 : (Not used) LDO4EN LDO4 control (ON/OFF) “0” : LDO4 OFF (Initial Value) “1” : LDO4 ON LDO3EN LDO3 control (ON/OFF) “0” : LDO3 OFF (Initial Value) “1” : LDO3 ON LDO2EN LDO2 control (ON/OFF) “0” : LDO2 OFF (Initial Value) “1” : LDO2 ON LDO1EN LDO1 control (ON/OFF) “0” : LDO1 OFF (Initial Value) “1” : LDO1 ON Bit2 : Bit1 : Bit0 : Address 14h < LDO1 Vout Control, LDO2 Vout Control > Address R/W Bit7 Bit6 Bit5 14h Initial Value Bit[7:4] : 74h 0 1 1 Bit4 1 Bit3 0 Bit2 1 Bit1 0 Bit0 0 R/W LDO2VSEL3 LDO2VSEL2 LDO2VSEL1 LDO2VSEL0 LDO1VSEL3 LDO1VSEL2 LDO1VSEL1 LDO1VSEL0 LDO2VSEL [3:0] “0000” : 1.20 V “0001” : 1.30 V “0010” : 1.50 V “0011” : 1.60 V “0100” : 1.80 V “0101” : 2.20 V “0110” : 2.40 V “0111” : 2.50 V (Initial Value) “1000” : 2.60 V “1001” : 2.70 V “1010” : 2.80 V “1011” : 2.90 V “1100” : 3.00 V “1101” : 3.10 V “1110” : 3.20 V “1111” : 3.30 V LDO1VSEL [3:0] “0000” : 1.20 V “0001” : 1.30 V “0010” : 1.50 V “0011” : 1.60 V “0100” : 1.80 V (Initial Value) “0101” : 2.20 V “0110” : 2.40 V “0111” : 2.50 V “1000” : 2.60 V “1001” : 2.70 V “1010” : 2.80 V “1011” : 2.90 V “1100” : 3.00 V “1101” : 3.10 V “1110” : 3.20 V “1111” : 3.30 V Bit[3:0] : www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 27/45 2010.07 - Rev.A BD6083GUL Address 15h < LDO3 Vout Control, LDO4 Vout Control > Address R/W Bit7 Bit6 Bit5 15h Initial Value Bit[7:4] : A4h 1 0 1 Technical Note Bit4 0 Bit3 0 Bit2 1 Bit1 0 Bit0 0 R/W LDO4VSEL3 LDO4VSEL2 LDO4VSEL1 LDO4VSEL0 LDO3VSEL3 LDO3VSEL2 LDO3VSEL1 LDO3VSEL0 LDO4VSEL [3:0] “0000” : 1.20 V “0001” : 1.30 V “0010” : 1.50 V “0011” : 1.60 V “0100” : 1.80 V “0101” : 2.20 V “0110” : 2.40 V “0111” : 2.50 V “1000” : 2.60 V “1001” : 2.70 V “1010” : 2.80 V (Initial Value) “1011” : 2.90 V “1100” : 3.00 V “1101” : 3.10 V “1110” : 3.20 V “1111” : 3.30 V LDO3VSEL [3:0] “0000” : 1.20 V “0001” : 1.30 V “0010” : 1.50 V “0011” : 1.60 V “0100” : 1.80 V (Initial Value) “0101” : 2.20 V “0110” : 2.40 V “0111” : 2.50 V “1000” : 2.60 V “1001” : 2.70 V “1010” : 2.80 V “1011” : 2.90 V “1100” : 3.00 V “1101” : 3.10 V “1110” : 3.20 V “1111” : 3.30 V Bit[3:0] : www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 28/45 2010.07 - Rev.A BD6083GUL ●Reset There are two kinds of reset, software reset and hardware reset (1)Software reset ・All the registers are initialized by SFTRST="1". ・SFTRST is an automatically returned to "0". (Auto Return 0). Technical Note (2) Hardware reset ・It shifts to hardware reset by changing RESETB pin “H” → “L”. ・The condition of all the registers under hardware reset pin is returned to the Initial Value, and it stops accepting all address. ・It’s possible to release from a state of hardware reset by changing RESETB pin “L” → “H”. ・RESETB pin has delay circuit. It doesn’t recognize as hardware reset in “L” period under 5μs. (3) Reset Sequence ・When hardware reset was done during software reset, software reset is canceled when hardware reset is canceled. (Because the Initial Value of software reset is “0”) ●VIODET The decline of the VIO voltage is detected, and faulty operation inside the IC is prevented by giving resetting to Levelsift block Image Block Diagram VIO VBAT DEToutput Inside reset 2.6V VBAT Reset by VIODET (typ)1.0V VIO VIODET RESETB R Digital pin I/O LEVEL SHIFT RESETB DET output Inside reset Fig.15 Fig.16 When the VIO voltage becomes more than typ1.0V(Vth of NMOS in the IC), VIODET is removed. On the contrary, when VIO is as follows 1.0V, it takes reset.(The VBAT voltage being a prescribed movement range) ●Thermal Shut Down A thermal shutdown function is effective in the following block. DC/DC (Charge Pump) LED Driver SBIAS LDO1, LDO2, LDO3, LDO4 The thermal shutdown function is detection temperature that it works is about 195℃. Detection temperature has a hysteresis, and detection release temperature is about 175 oC. (Design reference value) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 29/45 2010.07 - Rev.A BD6083GUL ●DC / DC Start DC/DC circuit operates when any LED turns ON. (DCDCFON=0) When the start of theDC/DC circuit is done, it has the soft start function to prevent a rush current. Force of VBAT and VIO is to go as follows. V BAT Technical Note V IO T VIOON=min 0.1ms RESETB T RSTB=min 0.1ms T RST=min 0ms E N (*) T SO FT V OUT T VIOOFF=min 0.1ms LEDcurrent (*) An EN signal means the following in the upper figure. EN = “MLEDEN” or “W＊EN” (= LED The LED lighting control of a setup of connection VOUT) But, as for Ta > TTSD (typ : 195° C), a protection function functions, and an EN signal doesn't become effective. TSOFT changes by the capacitor connected to VOUT and inside OSC. TSOFT is Typ 200μs (when the output capacitor of VOUT =1.0μF). Fig.17 Over Voltage protection / Over Current protection DC/DC circuit output (VOUT) is equipped with the over-voltage protection and the over current protection function. A VOUT over-voltage detection voltage is about 5.6V(typ). (VOUT at the time of rise in a voltage) A detection voltage has a hysteresis, and a detection release voltage is about 5.4V (typ). And, when VOUT output short to ground, input current of the battery terminal is limited by an over current protection function. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 30/45 2010.07 - Rev.A BD6083GUL Technical Note Mode transition The transition of boosts multiple transits automatically by VBAT Voltage and the VOUT Pin Voltage. STANDBY 1 condition○ ALL off MLEDEN=”1” or W*EN=”1” 1 ○ and Ta1.5V(typ), 128us(typ) wait X1.0 CP x1.0 mode mode down=”H” mode up=”H” X1.5 CP x1.5 mode mode down=”H” mode up=”H” X2.0 CP x2.0 mode Fig.18 The mode transition of the charge pump works as follows. ＜x1.0→x1.5→x2.0 Mode transition＞ The transition of the mode is done when VOUT was compared with VBAT and the next condition was satisfied. x1.0→x1.5 Mode transition VBAT ≤ VOUT + (Ron10×Iout) (LED Pin feedback:VOUT = Vf+0.2(Typ)) x1.5→x2.0 Mode transition VBAT×1.5 ≤ VOUT +(Ron15×Iout) (LED Pin feedback:VOUT = Vf+0.2(Typ)) Ron10: x1 Charge pump on resistance 1.4Ω(Typ) Ron15: x1.5 Charge pump on resistance 8.5Ω(Typ) ＜x2.0→x1.5→x1.0 Mode transition＞ The transition of the mode is done when the ratio of VOUT and VBAT is detected and it exceeds a fixed voltage ratio. x1.5→x1.0 Mode transition VBAT / VOUT =1.16(Design value) x2.0→x1.5 Mode transition VBAT / VOUT =1.12(Design value) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 31/45 2010.07 - Rev.A BD6083GUL Technical Note ●LED Driver The LED driver of 6ch is constructed as the ground plan. Equivalence control is possible with LED1 - 4(LED4 can choose use/un-use with a register W4MD.). LED5, LED6 is controllable individually. As for LED5, LED6, grouping setting to the main control is possible, and main control becomes effective for the main group in the allotment. LED5 and LED6 are setups of grouping to the main control. When LED5 and LED6 are used by the individual control, a slope time setup (register THL and TLH) doesn't become effective. LED1 IMLED[6:0] MLEDEN MLEDMD WPWMIN LED2 LED3 LED4 W4MD 1 LED5 IW5[6:0] W5EN 0 W5MD 1 LED6 IW6[6:0] W6EN 0 W6MD Fig.19 LED Composition which can be set up is the following. The main, other1 and other2 are controllable to each.(Enable and current setting) Main (ALC,PWM) 6LEDs 5LEDs 5LEDs 4LEDs 4LEDs 4LEDs 4LEDs 3LEDs 3LEDs 3LEDs 3LEDs Other1 1LED 1 LED 2 LEDs 1 LED 1 LED 2 LEDs 1 LED Other2 1LED 1LED www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 32/45 2010.07 - Rev.A BD6083GUL Technical Note ●ALC (Auto Luminous Control) LCD backlight current adjustment is possible in the basis of the data detected by external ambient light sensor. ・Extensive selection of the ambient light sensors (Photo Diode, Photo Transistor, Photo IC(linear / logarithm)) is possible by building adjustment feature of Sensor bias, gain adjustment and offset adjustment. ・Ambient data is changed into ambient level by digital data processing, and it can be read through I2C I / F. ・ Register setting can customize a conversion to LED current. (Initial Value is pre-set.) ・Natural dimming of LED driver is possible with the adjustment of the current transition speed. Always ON / Intermittence PWM enabling WPWMIN SBIAS SBIAS Conversion Slope Timer Mode Select LED* LCD Backlight Current Conversion Sensor SSENS Average ADC Logarithmic Conv. Ambient Level Slope process DC current setup Main Group setup GC1 GC2 Gain Control Gain Control ON/OFF Ambient Level ：Effective also in ALC functional the case of not using it Fig.20 (1)Auto Luminous Control ON/OFF ・ALC block can be independent setting ON/OFF. ・It can use only to measure the Ambient level. Register: ALCEN Register: MLEDEN Register: MLEDMD ・Refer to under about the associate ALC mode and Main LED current. ALCEN 0 0 0 1 1 1 (*1) (*2) MLEDEN 0 1 1 0 1 1 MLEDMD x 0 1 x 0 1 Sensor I/F OFF ( AMB(3:0)=0h ) LED control OFF ON OFF Mode OFF Non ALC mode Main LED current IMLED(6:0) IU0(6:0) (*1) IMLED(6:0) ALC mode (*2) ON ON ALC mode At this mode, because Sensor I/F is OFF, AMB(3:0)=0h. So, Main LED current is selected IU0(6:0). At this mode, Main LED current is calculated (See(8)Convert LED Current) It becomes current value corresponding to each brightness. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 33/45 2010.07 - Rev.A BD6083GUL (2) I/V conversion ・External resistance for the I-V conversion (Rs) are adjusted with adaptation of sensor characteristic Sensor Current (Iout) Technical Note SBIAS SSENS voltage VCC SBIAS VSSENS Iout IOUT Sensor IC A/D SSENS Ambient GND Rs SGND SSENS Voltage (=Iout x Rs) Rs is large Rs : Sense resistance (A sensor output current is changed into the voltage value.) SBIAS : Bias power supply terminal for the sensor SSENS : Sense voltage input terminal SSENS Voltage = Iout x Rs Fig.21 Rs is small Ambient www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 34/45 2010.07 - Rev.A BD6083GUL (3) Gain control ・Sensor gain switching function is built in to extend the dynamic range. ・It is controlled by register setup. ・When automatic gain control is off, the gain status can be set upin the manual. Register : GAIN ・GC1 and GC2 are outputted corresponding to each gain status. Technical Note SSENS Voltage High Gain mode Low Gain mode Ambient SSENS Voltage Auto Gain mode Ambient Example 1 (Use BH1621FVC) Example 2 Example 3 SBIAS SBIAS SBIAS VCC IOUT SSENS SSENS SSENS Application example 9.5 (*1) BH1621 GC1 GC2 GC1 GC2 SGND １ GC1 GC2 SGND GC1 GC2 SGND GND Resister values are relative Operating mode GAIN setting Gain status GC1 output GC2 output L High Auto 0 Low L L High Auto 0 Low L Fixed 1 L : This means that it becomes High with A/D measurement cycle synchronously. (*1) : Set up the relative ratio of the resistance in the difference in the brightness change of the High Gain mode and the Low Gain mode carefully. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 35/45 2010.07 - Rev.A BD6083GUL Technical Note (4) A/D conversion ・The detection of ambient data is done periodically for the low power. ・SBIAS and ADC are turned off except for the ambient measurement. ・The sensor current may be shut in this function, it can possible to decrease the current consumption. ・SBIAS pin and SSENS pin are pull-down in internal when there are OFF. ・SBIAS circuit has the two modes. (Usually ON mode or intermittent mode) Register: ADCYC Register: SBIASON 16 times ALCEN ADCYC ADC Cycle SBIAS Output Twait= 64ms(typ) ADC Movement (Wait time) W hen SBIASON=1 TAD= 16.4ms(typ) (A/D conversion time) AD start signal GC1, GC2=00 GC1, GC2 TADone= 1.024ms(typ) AMB(3:0) AMB(3:0) 16 times measurement Toprt= 80.4ms(typ) (Operate time) Fig.22 (5) Average filter ・Average filter is built in to rid noise or flicker. Average is 16 times (6) Ambient level detection ・Averaged A/D value is converted to Ambient level corresponding to Gain control. ・Ambient level is judged to rank of 16 steps by ambient data. ・Ambient level is output through I2C. Register: AMB(3:0) GAIN GAIN Setting Ambient Level 0h 1h 2h 3h 4h 5h 6h 7h 8h 9h Ah Bh Ch Dh Eh Fh VoS×0 / 256 VoS×1 / 256 VoS×2 / 256 VoS×3 / 256 VoS×4 / 256 VoS×6 / 256 VoS×7 / 256 VoS×11 / 256 VoS×12 / 256 VoS×20 / 256 VoS×21 / 256 VoS×36 / 256 VoS×37 / 256 VoS×64 / 256 VoS×65 / 256 VoS×114 / 256 VoS×115 / 256 VoS×199 / 256 VoS×200 / 256 VoS×255 / 256 Low 0 High SSENS Voltage VoS×0 / 256 VoS×1 / 256 VoS×2 / 256 VoS×3 / 256 VoS×4 / 256 VoS×5 / 256 VoS×7 / 256 VoS×8 / 256 VoS×12 / 256 VoS×13 / 256 VoS×21 / 256 VoS×22 / 256 VoS×37 / 256 VoS×38 / 256 VoS×65 / 256 VoS×66 / 256 VoS×113 / 256 VoS×114 / 256 VoS×199 / 256 VoS×200 / 256 VoS×255 / 256 VoS×0 / 256 VoS×1 / 256 VoS×2 / 256 VoS×3 / 256 VoS×4 / 256 VoS×5 / 256 VoS×6 / 256 VoS×7 / 256 VoS×9 / 256 VoS×10 / 256 VoS×13 / 256 VoS×14 / 256 VoS×19 / 256 VoS×20 / 256 VoS×27 / 256 VoS×28 / 256 VoS×38 / 256 VoS×39 / 256 VoS×53 / 256 VoS×54 / 256 VoS×74 / 256 VoS×75 / 256 VoS×104 / 256 VoS×105 / 256 VoS×144 / 256 VoS×145 / 256 VoS×199 / 256 VoS×200 / 256 VoS×255 / 256 1 - ※In the Auto Gain control mode, sensor gain changes in gray-colored ambient level. ※“/”: This means that this zone is not outputted in this mode. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 36/45 2010.07 - Rev.A BD6083GUL (7)Convert LED Current ・LED current can be assigned as each of 16 steps of the ambient level. ・Convert LED Current by Min Current setting,Max Current setting,step setting and curbu setting. Register: IU0 IU1 CRV STEP [2:0] Conversion Table (Initial Value) Coefficient Ambient Level CRV=0 CRV=1 0h 1h 2h 3h 4h 5h 6h 7h 0 0.25 0.5 1 1.5 2.5 3.5 5 0 1 2 3 4 5 6 7 Step Table Setting Ambient Level 8h 9h Ah Bh Ch Dh Eh Fh Coefficient CRV=0 6.5 8 10 12 13 14 15 16 CRV=1 8 9 10 11 12 13 14 15 STEP[2:0] 000 001 010 011 100 101 110 111 Technical Note ΔI 1.0mA 1.1mA 1.2mA 1.3mA 1.6mA 1.7mA 1.8mA 1.9mA I=ΔI×Coefficient+IU0 ※ I≧IU1:I=IU1 ※ ΔI×Coefficient Drop under 1mA The example of a setting IU0=4mA IU1=20mA CRV=0 30 SLP=1mA SLP=1.1mA SLP=1.2mA SLP=1.3mA SLP=1.6mA SLP=1.7mA SLP=1.8mA SLP=1.9mA CRV=1 30 SLP=1mA SLP=1.1mA SLP=1.2mA SLP=1.3mA SLP=1.6mA SLP=1.7mA SLP=1.8mA SLP=1.9mA 25 25 LED Current(mA) LED Current(mA) 20 20 15 15 10 10 5 5 0 0h 0 33 h 6h 6 99 h Ch 12 Fh 15 0 0h 0 3h 3 6h 6 9h 9 Ch 12 C Fh 15 Ambient AMB Level AMB Ambient Level Fig.23 Fig.24 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 37/45 2010.07 - Rev.A BD6083GUL (8) Slope process ・Slope process is given to LED current to dim naturally. ・LED current changes in the 256Step gradation in sloping. ・Up(dark→bright),Down(bright→dark) LED current transition speed are set individually. Register: THL (3:0) Register: TLH (3:0) ・Main LED current changes as follows at the time as the slope. TLH (THL) is setup of time of the current step 2/256. TLH Technical Note Current Data which is set LED Current Main LED current TLH(3:0) THL (3:0) Up/Down transition Speed is set individually time 25.6mA =0.1mA 256 THL Zoom Main LED current Fig.25 TLH(3:0) time Main LED current (9) LED current reset when mode change ・When mode is changed (ALC↔Non ALC), it can select the way to sloping. Register : MDCIR “0” : LED current non-reset when mode change “1” : LED current reset when mode change NonALC mode IMLED(6:0) ALC mode NonALC mode IMLED(6:0) IU*(6:0) MDCIR= “0” 0mA time NonALC mode ALC mode NonALC mode IMLED(6:0) Main LED current IMLED(6:0) IU*(6:0) MDCIR= “1” 0mA time www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 38/45 2010.07 - Rev.A BD6083GUL Technical Note (10) Current adjustment ・When the register setting permits it, PWM drive by the external terminal (WPWMIN) is possible. Register : WPWMEN ・It is suitable for the intensity correction by external control, because PWM based on Main LED current of register setup or ALC control. WPWMEN (Register) 0 1 WPWMIN(External Pin) L H L H Main group LED current Normal operation Normal operation Forced OFF Normal operation " Normal operation " depends on the setup of each register. EN(*) Internal Soft-Start Time DC/DC Output WPWMIN input WPWMEN LED Current EN(*) : it means “MLEDEN” or “W*EN”. It is possible to make it a WPWMIN input and WPWMEN=1 in front of EN(*). A PWM drive becomes effective after the time of an LED current standup. When rising during PWM operation, as for the standup time of a DC/DC output, only the rate of PWM Duty becomes late. Appearance may be influenced when extremely late frequency and extremely low Duty are inputted. Please secure 250 μs or more of H sections at the time of PWM pulse Force. Fig.26 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 39/45 2010.07 - Rev.A BD6083GUL Technical Note ●I/O When the RESETB pin is Low, the input buffers (SDA and SCL) are disabling for the Low consumption power. When RESETB=L, output is fixed at “H.” SCL (SDA) Level shifter EN Logic RESETB Fig.27 Special care should be taken because a current path may be formed via a terminal protection diode, depending on an I/O power-on sequence or an input level. ●About the start of LDO1~LDO4 It must start as follows. VBAT TVBATON TVBATOFF VIO TVIOON=min 0.1ms TVIOOFF=min 1ms TRSTB=min 0.1ms TRST=min 0ms LDO1EN or LDO2EN or LDO3EN or LDO4EN TRISE = max 1ms LDO1O or LDO2O or LDO3O or LDO4O (LDO output) RESETB Fig.28 VBAT ON (Enough rise up) → VIO ON (Enough rise up) → Reset release → LDO ON (Register access acceptable) LDO OFF → Reset → VIO OFF (Enough fall down) → VBAT OFF ●About the pin management of the function that isn't used and test pins Setting it as follows is recommended with the test pin and the pin which isn't used. Set up pin referring to the “Equivalent circuit diagram” so that there may not be a problem under the actual use. T2, T4 T1,T3 Non-used LED Pin WPWMIN Short to GND because pin for test input OPEN because pin for test output Short to GND (Must) But, the setup of a register concerned with LED that isn’t used is prohibited. Short to ground (A Pull-Down resistance built-in terminal is contained, too.) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 40/45 2010.07 - Rev.A BD6083GUL ●Operation Settings (Flow Example) 1. Backlight: Auto Luminous Mode Apply supply voltage. Technical Note Cancel reset. Luminous control: Various settings Backlight: Various settings The backlight settings can be made at any timing so long as it precedes MLEDEN=1. MLEDMD=1 is mandatory. ALCEN=1 ALC block operation takes place for Illumination Intensity measurement. Wait for 80.4 ms or more Time required for initial Illumination Intensity acquisition. MLEDEN=1 The backlight turns on. MLEDEN=0 must be set first when the backlight is off. Fig.29 A LC E N A D C YC A D C C ycle S B IA S O utput T w ait= 64m s(typ) A D C M ovem ent W hen S B IA S O N =1 T A D = 16.4m s(typ) G C 1, G C 2 G C 1, G C 2=00 A M B (3:0) A M B (3:0) T A M B = 80.4m s(typ) VOUT L E D current ① T S O FT Fig.30 When It cannot wait for the first illumination measurement, backlight lighting is possible with ALCEN. But the extremely short case of slope rise time, a shoulder may be done like ① for an LED electric current. (To the first illumination measurement for AMB(3:0)=00h) 2. Backlight: Fade-in/Fade-out Apply supply voltage. Cancel reset. Backlight: Various settings Backlight setting. Slow time setting. MLEDEN=1 The backlight turns on. (Rise at designated slope time) Set the minimum current. (Rise at designated slope time) MLEDEN=0 The backlight turns off. Fig.31 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 41/45 2010.07 - Rev.A BD6083GUL 3. Backlight without Auto Luminous Mode Apply supply voltage. Technical Note Cancel reset. Backlight: Various settings The backlight settings can be made at any timing so long as it precedes MLEDEN=1. MLEDMD=0 is mandatory. MLEDEN=1 The backlight turns on. MLEDEN=0 must be set first when the backlight is off. Fig.32 M LE D EN V O UT L ED current T SO FT T he rise time depends on TLH(3:0) setting Fig.33 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 42/45 2010.07 - Rev.A BD6083GUL ●PCB Pattern of the Power Dissipation Measuring Board Technical Note 1st layer(component) 2nd layer 3rd layer 4th layer 5th layer 6th layer 7th layer 8th layer(solder) Fig.34 PCB Pattern of the Power Dissipation Measuring Board www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 43/45 2010.07 - Rev.A BD6083GUL ●Notes for Use Technical Note (1) Absolute Maximum Ratings An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down devices, thus making impossible to identify breaking mode such as a short circuit or an open circuit. If any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physical safety measures including the use of fuses, etc. (2) Power supply and ground line Design PCB pattern to provide low impedance for the wiring between the power supply and the ground lines. Pay attention to the interference by common impedance of layout pattern when there are plural power supplies and ground lines. Especially, when there are ground pattern for smalICgnal and ground pattern for large current included the external circuits, please separate each ground pattern. Furthermore, for all power supply pins to ICs, mount a capacitor between the power supply and the ground pin. At the same time, in order to use a capacitor, thoroughly check to be sure the characteristics of the capacitor to be used present no problem including the occurrence of capacity dropout at a low temperature, thus determining the constant. (3) Ground voltage Make setting of the potential of the ground pin so that it will be maintained at the minimum in any operating state. Furthermore, check to be sure no pins are at a potential lower than the ground voltage including an actual electric transient. (4) Short circuit between pins and erroneous mounting In order to mount ICs on a set PCB, pay thorough attention to the direction and offset of the ICs. Erroneous mounting can break down the ICs. Furthermore, if a short circuit occurs due to foreign matters entering between pins or between the pin and the power supply or the ground pin, the ICs can break down. (5) Operation in strong electromagnetic field Be noted that using ICs in the strong electromagnetic field can malfunction them. (6) Input pins In terms of the construction of IC, parasitic elements are inevitably formed in relation to potential. The operation of the parasitic element can cause interference with circuit operation, thus resulting in a malfunction and then breakdown of the input pin. Therefore, pay thorough attention not to handle the input pins, such as to apply to the input pins a voltage lower than the ground respectively, so that any parasitic element will operate. Furthermore, do not apply a voltage to the input pins when no power supply voltage is applied to the IC. In addition, even if the power supply voltage is applied, apply to the input pins a voltage lower than the power supply voltage or within the guaranteed value of electrical characteristics. (7) External capacitor In order to use a ceramic capacitor as the external capacitor, determine the constant with consideration given to a degradation in the nominal capacitance due to DC bias and changes in the capacitance due to temperature, etc. (8) Thermal shutdown circuit (TSD) This IC builds in a thermal shutdown (TSD) circuit. When junction temperatures become detection temperature or higher, the thermal shutdown circuit operates and turns a switch OFF. The thermal shutdown circuit, which is aimed at isolating the IC from thermal runaway as much as possible, is not aimed at the protection or guarantee of the IC. Therefore, do not continuously use the IC with this circuit operating or use the IC assuming its operation. (9) Thermal design Perform thermal design in which there are adequate margins by taking into account the permissible dissipation (Pd) in actual states of use. (10) LDO Use each output of LDO by the independence. Don’t use under the condition that each output is short-circuited because it has the possibility that an operation becomes unstable. (11) About the pin for the test, the un-use pin Prevent a problem from being in the pin for the test and the un-use pin under the state of actual use. Please refer to a function manual and an application notebook. And, as for the pin that doesn't specially have an explanation, ask our company person in charge. (12) About the rush current For ICs with more than one power supply, it is possible that rush current may flow instantaneously due to the internal powering sequence and delays. Therefore, give special consideration to power coupling capacitance, power wiring, width of ground wiring, and routing of wiring. (13) About the function description or application note or more. The function description and the application notebook are the design materials to design a set. So, the contents of the materials aren't always guaranteed. Please design application by having fully examination and evaluation include the external elements. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 44/45 2010.07 - Rev.A BD6083GUL ●Ordering Part Number Technical Note B D 6 Part No. 0 8 3 G U L - E 2 Part No. Package GUL: VCSP50L3 Packaging and forming specification E2: Embossed tape and reel VCSP50L3(BD6083GUL) 3.15± 0.05 1PIN MARK Tape Quantity 0.1± 0.05 0.55MAX Embossed carrier tape (heat sealing method) 2500pcs E2 The direction is the 1pin of product is at the upper left when you hold 3.15± 0.05 S Direction of feed ( reel on the left hand and you pull out the tape on the right hand ) 0.06 S 35- φ 0.25± 0.05 0.05 A B (φ0.15)INDEX POST F E D C B A 1 2345 6 A B P=0.5 × 5 0.325± 0.05 0.325± 0.05 P=0.5 × 5 1pin (Unit : mm) Reel Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 45/45 2010.07 - Rev.A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. R1010A