BD8143MUV

Power Supply IC Series for TFT LCD Panels High-precision Gamma Correction IC with built-in DAC BD8143MUV No.09035EBT08 ●Description This gamma correction voltage generation IC feature built-in DACs and provide a 1chip solution with setting control via serial communications, a high-precision 10-bitDAC, and Buffer Amp (12ch). ●Features 1) 1chip design means fewer components 2) Built-in 10bit DAC 3) DAC output Buffer AMP (12ch) 4) Amp input select (CTL) 5) 3-line serial interface control 6) Thermal shut down 7) Power ON Reset Circuit 8) VQFN032V5050 Package ●Applications These ICs can be used with TFT LCD Panels used by Large-Screen and High-Definition LCD TVs. ●Absolute maximum ratings (Ta=25℃) Parameter Power Supply Voltage 1 Power Supply Voltage 2 REFIN Voltage Symbol DVCC VCC REF Io Tjmax Pd Topr Tstg Limit 7 20 20 30 * 1 Unit V V V mA ℃ 2 Amplifier Drive Current Junction Temperature Power Dissipation Operating Temperature Range Storage Temperature Range 150 2440 * -40～+105 -55～+150 mW ℃ ℃ *1 Pd, should not be exceeded. *2 Reduced by 19.52mW/°C over 25°C, when mounted on a glass epoxy board. (4-layer 74.2×74.2×1.6mm). ●Operating Condition (Ta=-40℃～105℃) Parameter Power Supply Voltage 1 Power Supply Voltage 2 REFIN Voltage AMP0 Drive Current AMP1～10 Drive Current AMP11 Drive Current Serial CLK Frequency OSC Frequency Symbol DVCC VCC REF IOA IOB IOC fCLK FOSC Limit MIN 2.3 8 8 -40 -20 MAX 5.5 18 18 20 40 5 200 Unit V V V mA mA mA MHz kHz www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 1/10 2009.07 - Rev.B BD8143MUV ●Electrical Characteristics (Unless otherwise specified, Ta=25℃,DVCC=3.3V,VCC=15V) Limit Parameter Symbol Unit MIN TYP MAX 〔REFIN〕 Sink Current Iref 90 200 µA 〔γCORRECTION AMP〕 Source Drive Current (AMP0) IooA -60 mA Source Drive Current (AMP1～10) IooB -30 mA Source Drive Current (AMP11) IooC -10 mA Sink Drive Current (AMP0) IoiA 10 mA Sink Drive Current (AMP1～10) IoiB 30 mA Sink Drive Current (AMP11) IoiC 60 mA Load regulation (OUT0) ⊿V-A 10 mV Load regulation (OUT1～10) ⊿V-B 10 mV Load regulation (OUT11) ⊿V-C 10 mV Slew Rate SR 3 V/µs OUT Voltage High (OUT0) VOH-A VCC-0.4 VCC-0.15 V OUT Voltage High (OUT1～10) VOH-B VCC-0.75 V OUT Voltage High (OUT11) VOH-C VCC-0.75 V OUT Voltage Low (OUT0) VOL-A 0.75 V OUT Voltage Low (OUT1～10) VOL-B 0.75 V OUT Voltage Low (OUT11) VOL-C 0.1 0.2 V 〔DAC〕 Resolution Coding Res 10 Bit Non-Linear Error (INL) Differential Error (DNL) 〔OSC〕 OSC Frequency 〔CONTROL SIGNAL〕 Sink Current Threshold Voltage 〔CONTROL〕 OUT0 Voltage OUT1 Voltage OUT2 Voltage OUT3 Voltage OUT4 Voltage OUT5 Voltage OUT6 Voltage OUT7 Voltage OUT8 Voltage OUT9 Voltage OUT10 Voltage OUT11 Voltage 〔WHOLE DEVICE〕 VDAC Detection Voltage Circuit Current LE DLE -2 -2 2 2 LSB LSB Technical Note Conditions REF=10V DAC=7V,OUT0=13V DAC=3.5V,OUT1～10=0V DAC=0.5V,OUT11=0V DAC=7V,OUT0=15V DAC=3.5V,OUT1～10=15V DAC=0.5V,OUT11=2V Io=0mA～-35mA, OUTx=6V Io=-15mA～15mA, OUTx=6V Io=0mA～35mA, OUTx=6V Io=-35mA Io=-15mA Io=-15mA Io=15mA Io=15mA Io=35mA Error with ideal straight Range 00A～3F5 Error with ideal amount of Increase in 1LSB Range 00A～3F5 Internal oscillator mode VIN=3.3V fosc Ictl VTH Vpre0 Vpre1 Vpre2 Vpre3 Vpre4 Vpre5 Vpre6 Vpre7 Vpre8 Vpre9 Vpre10 Vpre11 Vdet ICC - 100 16.5 - kHz µA V V V V V V V V V V V V V V mA DVCC×0.2 2.6 REFIN X 12/13 REFIN X 11/13 REFIN X 10/13 REFIN X 9/13 REFIN X 813 REFIN X 7/13 REFIN X 6/13 REFIN X 5/13 REFIN X 4/13 REFIN X 3/13 REFIN X 2/13 REFIN X 1/13 3.2 5 DVCC×0.8 3.6 CTL=”LOW” CTL=”LOW” CTL=”LOW” CTL=”LOW” CTL=”LOW” CTL=”LOW” CTL=”LOW” CTL=”LOW” CTL=”LOW” CTL=”LOW” CTL=”LOW” CTL=”LOW” CTL=”LOW” This product is not designed for protection against radio active rays. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 2/10 2009.07 - Rev.B BD8143MUV ●Pin No A GND A GND OUT5 O UT6 OUT7 OUT4 OUT3 OUT8 Technical Note ●Block Diagram VDD VCC VCC REFIN VDAC 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 R VCC VDAC REG REGISTER0 VDAC VCC AMP0 x2 OUT0 AMP1 OUT9 OUT1 0 OUT11 VC C REFI N VDA C D ACG ND N. C 25 26 27 28 29 30 31 32 1 2 3 4 5 6 7 8 OUT2 OUT1 OUT0 VCC N.C CTL N.C OSC LATCH DATA CLK CT VDD R REGISTER1 x2 OUT1 AMP2 REGISTER2 x2 OUT2 AMP3 REGISTER3 VREF UVLO TSD REGISTER4 x2 OUT3 AMP4 x2 OUT4 AMP5 REGISTER5 x2 OUT5 AMP6 Power ON Reset REGISTER6 DAC Control x2 OUT6 AMP7 REGISTER7 x2 OUT7 AMP8 Serial I/F REGISTER8 x2 OUT8 AMP9 REGISTER9 x2 OUT9 REGISTER10 x2 AMP10 OUT10 AMP11 SDOUT VDD REGISTER11 x2 OUT11 OSC Refresh Control REGISTER12 CTL CTL SDOUT DVC C DACGND GND OSC AGND AGND CL K CT LATCH SDIN GND ●Pin NO. & Function Table PIN Pin Function No. Name 1 LATCH LATCH signal input 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SDIN CLK SDOUT DVCC CT GND N.C OSC N.C CTL N.C VCC OUT0 OUT1 OUT2 Gamma 0 output Gamma 1 output Gamma 2 output DATA signal input CLK signal input DATA signal output Digital Power Supply Capacitor connection for Power on Reset Ground DAC Synchronized clock inout Output control signal input Power Supply for Buffer AMP N.C Fig.1 Pin No. & Block Diagram PIN No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Pin Name OUT3 OUT4 OUT5 AGND AGND OUT6 OUT7 OUT8 OUT9 OUT10 OUT11 VCC REFIN VDAC DACGND N.C Function Gamma 3 output Gamma 4 output Gamma 5 output Ground for Buffer AMP Ground for Buffer AMP Gamma 6 output Gamma 7 output Gamma 8 output Gamma 9 output Gamma 10 output Gamma 11 output Power Supply for Buffer AMP DAC reference input DAC Voltage output Ground for DAC - www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 3/10 2009.07 - Rev.B BD8143MUV Technical Note ●Block Operation ・REG REG amplifiers the voltage applied to REFIN by 0.5x and output it to the VDAC pin. Connect a 1µF phase compensation capacitor to the VDAC pin. ・DAC Control DAC Control convents the 10-bit digital signal read to the register to a voltage. ・Amp Amp amplifiers the voltage output from DAC Control by 2x. Input includes sample & hold function, refreshed by OSC. ・OSC The OSC generates the frequency that determines the Amp's refresh time. External input can be selected using serial input. ・Power On Reset When the digital power supply DVCC is activated, each IC generates a reset signal to initialize the serial interface, registers. Adding a 1,000 pF capacitor to the CT pin ensures that reset operation can be performed reliably, without regard to the speed with which the power supply starts up. ・VREF This block generates the internal reference voltage. ・TSD(Thermal Shut Down) The TSD circuit turns output off when the chip temperature reaches or exceeds approximately 175°C(TYP) in order to prevent thermal destruction or thermal runaway. When the chip returns to a specified temperature, the circuit resets. The TSD circuit is designed only to protect the IC itself. Application thermal design should ensure operation of the IC below the thermal shutdown junction temperature of approximately 150°C(TYP). ・CTL CTL signal can select Amp input. If CTL=”L”, each output voltage is fixed at REFIN voltage divided 13th equality. IF CTL=”H”, each Amp input connect DAC output, and each output comply with each register. ・Register A serial signal (consisting of 10-bit gamma correction voltage values) input using the serial interface is held for each register address. Data is initialized by the reset signal generated during a power-on reset. ・Serial I/F The serial interface uses a 3-line serial data format (LATCH, CLK, SDIN). It is used to set gamma correction voltages, specify register addresses, and select OSC I/O. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 4/10 2009.07 - Rev.B BD8143MUV Technical Note ●Serial Communication The serial data control block is composed of Shift-Register, DAC Register and DAC circuit. The DAC register memorizes data from the serial interface (LATCH, CLK and SDIN). The DAC circuit makes control voltage from the register output and it outputs to the each block. The DAC register value turns back the preset value when Power Supply starts up. Then, beginning 1bit of SDIN is always 0, because it is for test. Next 1bit switches OSC mode. If input 0, OSC mode is internal mode (the frequency is 100kHz). If input 1, it is external one that require external clock. SERIAL DATA CONTROL BLOCK LATCH CLK SDIN CLOCK CONTROL Shift Register d16 d15 d14 d13 d12 d10 d11 d9 d8 d7 d6 d5 d4 d3 d2 d1 1bit 10bit 5bit d0 1bit OUT0～12 Register ADDRESS DECORDE OSC MODE TEST MODE DAC Fig.2 SERIAL BLOCK ①TIMING OF SERIAL COMMUNICATION The 17 bits Serial data from SDIN terminal is loaded to Shift-Register at the rise edge of CLK, and these data is loaded to DAC Register at the rise edge of LATCH. If serial data period is less than 17 bits while LATCH state is LOW, the serial data is not memorized. If serial data period is more than 17 bits while LATCH state is LOW, last 17 bits are effective. TIMING OF SERIAL COMMUNICATION LATCH CLK SDIN d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 d13 d14 d15 d16 Fig.3 TIMING OF SERIAL COMMUNICATION ②SERIAL DATA The composition of SERIAL DATA INPUT(SDIN) First → d0 d1 d2 d3 d4 d5 d6 0 X Resister Address ADDRESS d2 0 0 0 0 0 0 0 0 0 0 0 0 0 d3 0 0 0 0 0 0 0 0 1 1 1 1 1 d4 0 0 0 0 1 1 1 1 0 0 0 0 1 d5 0 0 1 1 0 0 1 1 0 0 1 1 0 d6 0 1 0 1 0 1 0 1 0 1 0 1 0 d7 d8 d9 d10 d11 d12 d13 d14 → Last d15 d16 DATA PRESET VALUE d7～d16 00 00 00 00 00 00 00 00 00 00 00 00 00 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 REGISTER NAME Register 0 Register 1 Register 2 Register 3 Register 4 Register 5 Register 6 Register 7 Register 8 Register 9 Register 10 Register 11 Register 12(*) FUNCTION OUT0 Voltage of control OUT1 Voltage of control OUT2 Voltage of control OUT3 Voltage of control OUT4 Voltage of control OUT5 Voltage of control OUT6 Voltage of control OUT7 Voltage of control OUT8 Voltage of control OUT9 Voltage of control OUT10 Voltage of control OUT11 Voltage of control - (*)IF Register 12 is loaded at DATA=1010100000(2A0h), each output comply with each register regardless of CTL signal. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 5/10 2009.07 - Rev.B BD8143MUV ●Serial Communication Timing Chart LATCH tWL tWH tCL tLA Technical Note CLK tLC tSC SDIN Fig.4 ●Timing Standard Value Parameter LATCH Set up time SDIN Set up time CLK “H” time CLK “L” time LATCH hold time LATCH “H” time Symbol tLC tSC tWH tWL tCL tLA LIMIT Min. 0.1 0.1 0.1 0.1 0.1 0.6 Typ. － － － － － － Max. － － － － － － Unit us us us us us us ●Setting γ-Correction Formula (1) shows the relationship between γ output voltage (OUT0～OUT11) and DAC digital value. Output Voltage(OUT0～OUT11)=({(DAC digital value +1)/1024}×(REFIN/2)‐10mV)×2.0025 ●Power Supply Sequence Digital power supply DVCC must be supplied earlier than VCC for the prevent of wrong behavior. The serial data must be input after cancellation of “Power on Reset”. When turn off power supply, VCC must be done earlier than DVCC. VCC REFIN ・・・ tVcc ・・・(1) ・・・ tVD ・・・ ・・・ tVR tRV DVCC ・・・ ・・・ LATCH tDS ・・・ tSV ・・・ CLK ・・・ ・・・ SDIN ・・・ ・・・ Fig.5 Power Supply Sequence ●Power Supply Sequence Standard Value Parameter Timing of serial data input Timing of VCC ON Timing of REFIN ON Timing of REFIN OFF Timing of VCC OFF VCC rise time Symbol tDS tSV tVR tRV tVD tVCC LIMIT Min. 100 0 0 0 1 Typ. 10 10 10 10 Max. Unit μs μs μs μs μs ms Condition Cct=1000pF www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 6/10 2009.07 - Rev.B BD8143MUV Technical Note ●Data writing time for register Data writing time for register depend on frequency of CLK. Below formula shows data writing time for all registers. (Because data writing time for a register is needed at 17bit data + LATCH “H” time.) 18 CLK × 1 fCLK [MHz] ●Refresh time of Amp input Each Amp input have sample & hold function refreshed by OSC frequency (fosc). Below formula shows refresh cycle. 1 fOSC [kHz] When internal OSC mode, fOSC=100kHz (Typ). ●Function of selecting Amp input This IC can select Amp input by CTL signal. If CTL=”L”, Amp input is connected to resistance division of REFIN voltage. IF CTL=”H”, connected to DAC output. When VCC(REFIN) supplies with CTL=”L”, it is possible to start up without opposite Voltage of each output. Then, if the CTL signal changes “H” after 1ms and over since VCC(REFIN) supplied and data send finished, start up sequence should be below Fig. (*Amp input is connected to DAC output not only by CTL=”H”, but also DATA=1010100000(2A0h) sended to Register 12. Also in this case, please send DATA=1010100000(2A0h) to Register 12 after 1ms and over since VCC(REFIN) supplied And output data send finished, at this time CTL=”L”.) ×12ch [µs] ×12ch [µs] REFIN VCC Preset value CTL OUT0 VDAC VCC OUT1 OUT2 x2 OUT DAC Control OUT10 DAC value OUT11 CTL Preset value DAC value Fig.6 Selecting Amp input block diagram Fig.7 Start up sequence www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 7/10 2009.07 - Rev.B BD8143MUV ●Input Output Circuit (BD8143MUV) 1.LATCH 2.SDIN 3.CLK DVCC Technical Note 4.SDOUT DVCC 6.CT DVCC GND GND GND 9.OSC 11. CTL 14.OUT0 17.OUT3 22.OUT6 25.OUT9 15.OUT1 18.OUT4 23.OUT7 26.OUT10 VCC 16.OUT2 19.OUT5 24.OUT8 27.OUT11 DVCC DVCC GND GND AGND 29.REFIN VCC 30.VDAC VCC AGND AGND Fig.8 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 8/10 2009.07 - Rev.B BD8143MUV Technical Note ●Notes for use 1) Absolute maximum ratings Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range may result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when such damage is suffered. A physical safety measure such as a fuse should be implemented when use of the IC in a special mode where the absolute maximum ratings may be exceeded is anticipated. 2) GND potential Ensure a minimum GND pin potential in all operating conditions. 3) Setting of heat Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions. 4) Pin short and mistake fitting Use caution when orienting and positioning the IC for mounting on printed circuit boards. Improper mounting may result in damage to the IC. Shorts between output pins or between output pins and the power supply and GND pins caused by the presence of a foreign object may result in damage to the IC. 5) Actions in strong magnetic field Use caution when using the IC in the presence of a strong magnetic field as doing so may cause the IC to malfunction. 6) Testing on application boards When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to stress. Always discharge capacitors after each process or step. Ground the IC during assembly steps as an antistatic measure, and use similar caution when transporting or storing the IC. Always turn the IC's power supply off before connecting it to or removing it from a jig or fixture during the inspection process. 7) Ground wiring patterns When using both small signal and large current GND patterns, it is recommended to isolate the two ground patterns, placing a single ground point at the application's reference point so that the pattern wiring resistance and voltage variations caused by large currents do not cause variations in the small signal ground voltage. Be careful not to change the GND wiring patterns of any external components. 8) Regarding input pin of the IC This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them isolated. P/N junctions are formed at the intersection of these P layers with the N layers of other elements to create a variety of parasitic elements. For example, when the resistors and transistors are connected to the pins as shown in below Fig.9, a parasitic diode or a transistor operates by inverting the pin voltage and GND voltage. The formation of parasitic elements as a result of the relationships of the potentials of different pins is an inevitable result of the IC's architecture. The operation of parasitic elements can cause interference with circuit operation as well as IC malfunction and damage. For these reasons, it is necessary to use caution so that the IC is not used in a way that will trigger the operation of parasitic elements such as by the application of voltages lower than the GND (P substrate) voltage to input and output pins. Resistor (Pin A) (Pin B) C ～ ～ Transistor (NPN) B (Pin B) B C E GND Parasitic elements N (Pin A) Parasitic elements GND ～ ～ GND P+ N N P N Parasitic elements GND Parasitic elements N P N P+ P+ N P substrate GND P P+ ～ ～ E Fig.9 Example of a Simple Monolithic IC Architecture 9) Overcurrent protection circuits An overcurrent protection circuit designed according to the output current is incorporated for the prevention of IC damage that may result in the event of load shorting. This protection circuit is effective in preventing damage due to sudden and unexpected accidents. However, the IC should not be used in applications characterized by the continuous operation or transitioning of the protection circuits. At the time of thermal designing, keep in mind that the current capacity has negative characteristics to temperatures. 10) Thermal shutdown circuit (TSD) This IC incorporates a built-in TSD circuit for the protection from thermal destruction. The IC should be used within the specified power dissipation range. However, in the event that the IC continues to be operated in excess of its power dissipation limits, the attendant rise in the chip's junction temperature Tj will trigger the TSD circuit to turn off all output power elements. The circuit automatically resets once the junction temperature Tj drops.Operation of the TSD circuit presumes that the IC's absolute maximum ratings have been exceeded. Application designs should never make use of the TSD circuit. 11) Testing on application boards At the time of inspection of the installation boards, when the capacitor is connected to the pin with low impedance, be sure to discharge electricity per process because it may load stresses to the IC. Always turn the IC's power supply off before connecting it to or removing it from a jig or fixture during the inspection process. Ground the IC during assembly steps as an antistatic measure, and use similar caution when transporting or storing the IC. 12) Push Current This IC may rush current momentary by power supply order or delay, use caution about power supply coupling capacitor, width or routing of VCC ,GND patterns www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. ～ ～ 9/10 2009.07 - Rev.B BD8143MUV ●Ordering part number Technical Note B D 8 Part No. 1 4 3 M U V - E 2 Part No. Package MUV: VQFN032V5050 Packaging and forming specification E2: Embossed tape and reel VQFN032V5050 5.0 ± 0.1 5.0 ± 0.1 Tape Quantity Direction of feed Embossed carrier tape 2500pcs E2 The direction is the 1pin of product is at the upper left when you hold 1PIN MARK 1.0MAX S +0.03 0.02 -0.02 (0.22) ( reel on the left hand and you pull out the tape on the right hand ) 0.08 S C0.2 0.4 ± 0.1 32 3.4 ± 0.1 1 8 9 25 24 17 16 0.75 0.5 3.4 ± 0.1 +0.05 0.25 -0.04 1pin Direction of feed (Unit : mm) Reel ∗ Order quantity needs to be multiple of the minimum quantity. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 10/10 2009.07 - Rev.B 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. 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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 © 2009 ROHM Co., Ltd. All rights reserved. R0039A