BD18362EFV-ME2

Datasheet Matrix LED Driver Automotive Dynamic Indicator Lamps 8ch Matrix LED Controller BD18362EFV-M General Description Key Specifications Features Package BD18362EFV-M is an 8-channel matrix LED controller with an internal FET switch. Switching the FET on and off allows a control of the sequential lighting. An internal charge pump serves as a power supply for the gate driver. Since sequential lighting pattern is built in, the microcontroller is unnecessary.           AEC-Q100 Qualified(Note 1) 8-channel Matrix Switch Up to 2LED’s per Switch Control Built in Sequential Lighting pattern Sequential Lighting Phase Time Setting Sequential Lighting Start-up Delay Time Setting All-light-up (Hazard Mode) LED Open Protection LED Short Detection Thermal shutdown      Input Voltage Range: 5.5V to 60V Maximum Total LED’s Voltage: 48V(Max) Maximum SW Bypass Current 1.0A(Max) Internal FET Switch ON Resistance: 230mΩ(Typ) Operating Temperature Range: -40°C to +125°C W(Typ) x D(Typ) x H(Max) 9.70mm x 6.40mm x 1.00mm HTSSOP-B28 (Note 1) Grade1 Applications  Automotive Exterior Lamps (Dynamic Indicator) HTSSOP-B28 Typical Application Circuit ILED CVCC1 CVCC2 RHAZ CVREG CSETDLY CSETCLK VCC CFP CNT CFM HAZ VREG CP SETDLY CH8 SETCLK CH7 SET CH6 R SET R CMPLT R FLAG R SG CH5 SEL1 CH4 SEL2 CH3 SEL3 CH2 CMPLT CH1 FLAG CH0 SG ILED CCF CVCC1 R HAZ CCP CVREG LED7 CSETDLY CSETCLK LED6 LED5 VCC CFP CNT CFM CP HAZ VREG CH8 SETDLY CH7 SETCLK CH6 SET CH5 R SET LED4 LED3 LED2 LED1 RCMPLT RFLAG LED0 RSG GND 〇Product structure: Silicon monolithic integrated circuit .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 14 • 001 CVCC2 SEL1 CH4 SEL2 CH3 SEL3 CH2 CMPLT CH1 FLAG SG GND CH0 CCF CCP LED7b LED7a LED6b LED6a LED5b LED5a LED4b LED4a LED3b LED3a LED2b LED2a LED1b LED1a LED0b LED0a 〇This product has no designed protection against radioactive rays 1/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 Datasheet General Precaution 1. Before you use our Products, you are requested to carefully read this document and fully understand its contents. ROHM shall not be in any way responsible or liable for failure, malfunction or accident arising from the use of any ROHM’s Products against warning, caution or note contained in this document. 2. All information contained in this document is current as of the issuing date and subject to change without any prior notice. Before purchasing or using ROHM’s Products, please confirm the latest information with a ROHM sales representative. 3. The information contained in this document is provided on an “as is” basis and ROHM does not warrant that all information contained in this document is accurate and/or error-free. ROHM shall not be in any way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccuracy or errors of or concerning such information. Notice – WE © 2015 ROHM Co., Ltd. All rights reserved. Rev.001 BD18362EFV-M Pin Configuration HTSSOP-B28 (TOP VIEW) VCC 1 28 CFM CNT 2 27 CFP HAZ 3 26 CP TEST 4 25 CH8 VREG 5 24 CH7 SEL1 6 23 CH6 SEL2 7 22 CH5 SEL3 8 21 CH4 SETCLK 9 20 CH3 SETDLY 10 19 CH2 SET 11 18 CH1 CMPLT 12 17 CH0 SG 13 16 TEST FLAG 14 15 GND Thermal PAD Pin Description PIN No. Symbol PIN No. Symbol 1 VCC Input power supply 15 GND GND 2 CNT Control input 16 TEST TEST input (Note 1) 3 HAZ Hazard mode switching input 17 CH0 LED0 cathode connection 4 TEST TEST input (Note 1) 18 CH1 LED0 anode & LED1 cathode connection 5 VREG Internal reference voltage output 19 CH2 LED1 anode & LED2 cathode connection 6 SEL1 Setting of the switch in use 1 20 CH3 LED2 anode & LED3 cathode connection 7 SEL2 Setting of the switch in use 2 21 CH4 LED3 anode & LED4 cathode connection 8 SEL3 Setting of the switch in use 3 22 CH5 LED4 anode & LED5 cathode connection 9 SETCLK Sequential lighting phase time setting 23 CH6 LED5 anode & LED6 cathode connection 10 SETDLY 24 CH7 LED6 anode & LED7 cathode connection 11 SET 25 CH8 LED7 anode connection 12 CMPLT Lighting complete signal output 26 CP 13 SG Status good output 27 CFP Connecting capacitor for charge pump + 14 FLAG Error flag output 28 CFM Connecting capacitor for charge pump - Function Sequential lighting start-up delay time setting Sequential lighting phase time/ start-up delay time setting Function Charge pump output for internal switch (Note 1) Connect to GND .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 2/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Block Diagram VCC VREG VREG CFP TSD Internal Regulator CFM TSD Charge Pump CP VREG UVLO UVLO UVLO VREG SETDLY VCP TSD VREG SETDLY CH8 VREG Local power supply VREG SW7 Level Shift Internal Oscillator LED Open/short det CH7 VCP SETCLK SET Local power supply VREG WDTDLY VREG SW6 Level Shift SETCLK LED Open/short det CH6 WDTCLK CNT VREG CNT HAZ ・ ・ ・ VREG LOGIC CH2 HAZ VCP SEL1 Local power supply VREG VREG SW1 Level Shift SEL2 SEL CH1 SEL3 FLAG LED Open/short det VCP Local power supply VREG VREG SW0 DIAG Output Level Shift FLAG CMPLT LED Open/short det CH0 CMPLT SG SG TEST TEST GND .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 3/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks 1. Total Function The BD18362EFV-M is a matrix LED controller able to implement a sequential lighting (Dynamic Indicator) of LEDs without the need for a microcontroller. An LSI meant for driving LEDs with eight switches connected in a series and is used in conjunction with an LED driver. The switches are connected to the anodes and cathodes of the LED. When the switch is OFF, a current flow through the LED and the LED is light. When the switch is ON, the current is bypassed and the LED is unlighted. When the CNT pin is given a high input, the switches are turned OFF sequentially from SW0 after the sequential lighting start-up delay time (tDLY) and the LEDs are lighting sequentially from LED0. The tDLY can be set by means of a capacitor connected to the SETDLY pin and a resistor connected to the SET pin. The sequential lighting phase time (tPS1), in which the switch is turned from the ON to the OFF position, can be set by means of a capacitor connected to the SETCLK pin and a resistor connected to the SET pin. When the CNT pin is given a low input, the LEDs are turned to the all-OFF position. However, the switches are turned ON sequentially from SW7 (LEDs are unlighted sequentially) at a fixed time (tPSL). This avoids sudden output voltage fluctuations. Additionally, the BD18362EFV-M is built in hazard mode function. When the HAZ pin is given a high input at the lighting condition, the LEDs are turned from the all-OFF to the all-ON position. However, the switches are turned OFF sequentially from SW0 (LEDs are light sequentially) at a fixed time (tPSH). This avoids sudden output voltage fluctuations. Although there are 8 switches to the BD18362EFV-M, it is also possible to use it with 7 switches or less. The number of used switches can be set by pulling up the SEL1 pin, the SEL2 pin and the SEL3 pin to the VREG pin or by pulling down to GND. Also, it is possible to use two BD18362EFV-M if more than 9 switches are employed. A sequential lighting of more than 9 switches is possible by connecting the CMPLT pin and the CNT pin so the phase shift of the second BD18362EFV-M will start after the phase shift of the first BD18362EFV-M has been completed. The BD18362EFV-M is built in a diagnostic function for LED open and LED short on each switch. If the LED open diagnosis detects an open during the period when the LED is light (the switch is OFF), the immediately corresponding switch is turned ON and the current is bypassed. Additionally, the FLAG pin will have a low output in order to report the LED open. In the same way, the LED short diagnosis detects a short during the period when the LED is light (the switch is OFF). The FLAG pin will have a low output in order to report the LED short. BD18362EFV-M built in an internal watchdog timer. ●Watchdog timer for sequential lighting start-up delay time If the capacitor connected to the SETDLY pin has a short, the LED will be unlighted, since the sequential lighting start-up delay time cannot be set. When tWDTDLY has passed, there is a time-out and the FLAG pin will have a low output. Also, the LEDs are automatically all light. As in the hazard mode, the switches are turned OFF sequentially at fixed time. ●Watchdog timer for sequential lighting phase time If the capacitor connected to the SETCLK pin has a short, the LED will be unlighted, since the phase shift time tPS1 cannot be set. When tWDTCLK has passed, there is a time-out and the FLAG pin will have a low output. Also, the LEDs are automatically all light. As in the hazard mode, the switches are turned OFF sequentially at fixed time. The BD18362EFV-M is built in charge pump serving as a power supply for the switch gate drive. All switches and gate drive circuits form a floating circuit and operate under the voltage generated by the charge pump circuit. The BD18362EFV-M has high voltage switches and each of switches can connect with up to 2 LEDs in series. Achieve the 16 LEDs solution by 8-channels with 2LEDs in each of switches. .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 4/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued 2. SG [Status Good] After the VCC is supplied, the switches may happen to be OFF until the internal circuit comes to a stable condition. In this condition, the LED might flicker when the LED current is supplied. The BD18362EFV-M can report by the SG pin for internal condition as ready to switch in stable. In order to prevent a flickering, it is recommended to provide an LED current after the SG pin switches from a low to Hiz. If the VCC pin voltage rises above the UVLO release voltage (VUVR) and the SG delay time (tdSG) has passed, the SG pin will switch from a low to Hiz. During UVLO detection or thermal shutdown detection, the SG pin will switch to a low. If the SG delay time (tdSG) has passed after a UVLO release and thermal shutdown release, the SG pin will switch from a low to Hiz. (refer to Figure19 (b)) The SG pin is open drain and needed pulled up resistor for monitoring output signal. VUVR VCC SETDLY LED0 LED0 OFF LED0 ON tdSG SG L HiZ SWn ALL ON Phase Shift ILED Figure 1. Timing Chart (Status Good Function) To avoid the LED flicker, it is recommended to connect the SG pin and the current source LED drivers control pin (e.g. enable pin and PWM pin). Pull up the SG pin to the VREG pin (BD18362EFV-M) with resister, connect the SG pin and the current source LED drivers control pin. Design with sufficient consideration of the threshold voltage input, inside impedance, pull up resister value and VREG voltage value. control pin Current Source LED Driver VREG SG BD18362EFV-M Figure 2. Application of Connecting with the SG Pin to the current source LED Driver .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 5/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued 3. SETDLY [Sequential Lighting Start-up Delay Time Setting] The delay time until the switch is turned OFF must be set in order not to have a planned sequential operation where BD18362EFV-M turns the switches OFF before the current supply to the LED (e.g. LED driver) operates. The setting can be done the capacitor connected to the SETDLY pin (CSETDLY) and the resistor connected to the SET pin (RSET). The charging of the capacitor connected to the SETDLY pin starts when the SG pin change from low to Hiz and the CNT pin voltage has risen above the VCNTH voltage. SW0 turn OFF (LED0 turn ON) after the setting time (tDLY). Sequential Lighting Start-up Delay Time 𝑡𝐷𝐿𝑌 = 𝐾𝐷𝐿𝑌 × 𝑅𝑆𝐸𝑇 × 𝐶𝑆𝐸𝑇𝐷𝐿𝑌 [s] When the Sequential lighting start-up delay time is passed, the SETDLY pin is discharged. A recharge is possible under the following 3 conditions: (1) or (2) or (3) (1) UVLO detection → UVLO release → Status good delay time passed → Recharge (2) Thermal shutdown detection → Thermal shutdown release → Status good delay time passed → Recharge (3) Input VCNT ≤ VCNTH-VCNTHYS → Input VCNT≥VCNTH → Recharge VUVR VCC CNT VCNTH SG SETDLY tDLY LED0 LED0 OFF LED0 ON FLAG (a) Start-up VCC VCC VUVD CNT VCNTH VCNTH-VCNTHYS VUVR CNT tdSG SG SG SETDLY SETDLY t DLY LED LED OFF t DLY phase shift LED OFF t DLY phase shift FLAG LED LED OFF tDLY LED OFF phase shift phase shift FLAG (b) CNT control (c) Re-start Figure 3. Timing Chart (Sequential Lighting Start-up Delay Time) .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 6/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued 4. SETCLK [Sequential Lighting Phase Time Setting] Through the BD18362EFV-M it is possible to change the sequential lighting phase time. The sequential lighting phase time (tPS1) is determined by the clock period (tCLK), which is set by the capacitor connected to the SETCLK pin (CSETCLK) and the resistor connected to the SET pin (RSET). Clock Period 𝑡𝐶𝐿𝐾 = 𝐾𝑃𝑆 ×𝑅𝑆𝐸𝑇 ×𝐶𝑆𝐸𝑇𝐶𝐿𝐾 256 [s] Sequential Lighting Phase Time 𝑡𝑃𝑆1 = 𝐾𝑃𝑆 × 𝑅𝑆𝐸𝑇 × 𝐶𝑆𝐸𝑇𝐶𝐿𝐾 [s] CMPLT tPS1 LED7 LED OFF LED ON tPS1 LED6 ・・・ LED ON t PS1 LED1 LED OFF LED ON tPS1 LED0 LED OFF LED ON Figure 4. Timing Chart (Sequential Lighting Phase Shift HAZ=L) SET RSET Current Setting SETCLK CSETCLK OFF/ON Oscillator ON/OFF CLK Phase Shift SETCLK t CLK CLK Figure 5. CLK Generation Circuit for Sequential Lighting Phase Shift .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 7/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued 5. HAZ [Hazard Mode Switching Input] The BD18362EFV-M is built in hazard mode function. If the HAZ pin is given a high input (≥VHAZH), the LEDs are turned from the all-OFF to the all-ON position after sequential lighting start-up delay (tDLY) passed. However, the switches are turned OFF sequentially (LEDs are light sequentially) at a fixed time (tPSH), this avoids sudden output voltage fluctuations. CMPLT LED OFF LED ON LED6 LED OFF LED ON LED1 LED OFF LED ON LED0 LED OFF LED ON ・・・ LED7 CMPLT LED7 tPSH LED6 ・・・ LED ON tPSH LED1 LED OFF LED ON tPSH LED0 LED OFF LED ON Figure 6. Timing Chart (Hazard mode HAZ=H) .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 8/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued 6. SEL [Setting pin for switches in use] The BD18362EFV-M has 8 switches. Therefore, in cases where only 7 or less switches are used, please short-circuit the board with the pins that are not used. The protective function must be disabled for those switches that are not being used, so that the short detection will not run. The switches in use determine if the SEL1pin, the SEL2 pin and the SEL3 pin are setting high input (≥VSELH) or low input (≤VSELL). Protective Function Invalidity Switches 7 6, 7 5, 6, 7 4, 5, 6, 7 3, 4, 5, 6, 7 2, 3, 4, 5, 6, 7 1, 2, 3, 4, 5, 6, 7 Switches in use 0, 1, 2, 3, 4, 5, 6, 7 0, 1, 2, 3, 4, 5, 6 0, 1, 2, 3, 4, 5 0, 1, 2, 3, 4 0, 1, 2, 3 0, 1, 2 0, 1 0 SEL1 SEL2 SEL3 low high low high low high low high low low high high low low high high low low low low high high high high The setting will not be changed even if the SEL pin voltage switches temporarily during the sequential lighting phase shift operation. The settings are changed at a restart. A restart is possible under the following 3 conditions: (1) or (2) or (3) (1) UVLO detection → UVLO release → Status good delay time passed → Set SEL condition (2) Thermal shutdown detection → Thermal shutdown release → Status good delay time passed → Set SEL condition (3) Input VCNT ≤ VCNTH-VCNTHYS → Input VCNT≥VCNTH → Set SEL condition CP CH8 SW7 CH7 SW6 CH6 SW5 CH5 SEL1 SW4 CH4 SEL2 SW3 SEL3 CH3 SW2 CH2 SW1 CH1 SW0 CH0 Figure 7. A Circuit for Setting SEL (for using 6 Switches) .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 9/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued 7. CMPLT [Lighting Complete Signal Output] When the sequential lighting is complete, the CMPLT pin changes from a low to Hiz. The BD18362EFV-M has 8 switches. Therefore, in cases where 9 or more switches are used for sequential lighting, a second BD18362EFV-M comes into use. When the lighting of LED by an IC (A) is complete, the CMPLT pin of an IC (A) will give a Hiz output. By connecting the CMPLT pin of an IC (A) and the CNT pin of an IC (B), the LED lighting of an IC (B) will start after the LED lighting of an IC (A) is complete. Also, the “lighting complete” timing is changed according to the used switches set by the SEL1 pin, the SEL2 pin and the SEL3 pin. If the 6 and 7 switches are invalidated, the CMPLT pin will have a Hiz output at the time when the start-up of switch 5 is completed. The CMPLT pin will change Hiz to low under following conditions. (1) or (2) or (3) (refer to Figure19 (c)) (1) UVLO detection → CMPLT=L (2) Thermal shutdown detection → CMPLT=L (3) Input VCNT ≤ VCNTH-VCNTHYS → CMPLT=L The CMPLT pin is open drain and needed pulled up resistor for monitoring output signal. ILED VCC VCC CNT CNT HAZ HAZ VREG CP SETDLY CH8 SETDLY CH8 SETCLK CH7 SETCLK CH7 SET CH6 SEL1 CH4 CH3 SEL3 CH2 LED3 LED2 LED1 SEL1 CH4 SEL2 CH3 SEL3 CH2 CH1 LED0 CH0 CMPLT CH5 LED4 CH1 CH6 SET LED5 CH5 SEL2 CP VREG CH0 GND CMPLT IC (A) LED5 LED4 LED3 LED2 LED1 LED0 GND IC (B) Figure 8. Application Example (for using 12 Switches) LED5 LED ON ・ ・ ・ IC (B) t PS1 LED1 LED ON tPS1 LED0 LED ON CMPLT IC (A) t PS1 LED5 LED ON ・ ・ ・ tPS1 LED1 LED ON tPS1 LED0 LED OFF LED ON Figure 9. Timing Chart (for using 12 Switches) .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 10/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued CMPLT tPS1 LED7 tPS1 LED6 LED OFF LED ON ・・・ LED ON tPS1 LED1 LED OFF LED ON tPS1 LED0 LED OFF LED ON Figure 10. Timing Chart (CMPLT output function SEL1=L, SEL2=L, SEL3=L) CMPLT LED7 LED6 tPS1 LED5 ・・・ LED ON tPS1 LED1 LED OFF LED ON tPS1 LED0 LED OFF LED ON Figure 11. Timing Chart (CMPLT output function SEL1=L, SEL2=H, SEL3=L) .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 11/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued 8. CNT [Lighting On/Off Control] It is possible to control the switches through the CNT pin. If the CNT pin is given a high input (≥VCNTH), the switches will be turned OFF sequentially and the LEDs are light sequentially after the sequential lighting start-up delay time tDLY. If the CNT pin is given a low input (≤VCNTH-VCNTHYS), the switches will be turned ON sequentially and the LEDs are unlighted sequentially. Also, the CMPLT pin will have a low output. The switches are turned ON sequentially (LEDs are unlighted sequentially) at a fixed time (tPSL), this avoids sudden output voltage fluctuations. . VCNTH CNT VCNTH-VCNTHYS SETDLY CMPLT tPS1 LED7 LED OFF LED ON tPS1 LED6 LED OFF t PSL ・・・ LED ON LED1 LED OFF LED ON tPS1 LED0 LED OFF tPSL LED ON Figure 12. Timing Chart (The CNT Pin Function) .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 12/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued 9. LED Short Detection The BD18362EFV-M is built in LED short detection. While switch is turned OFF, the voltage between CHn-CHn-1 is monitored. If the voltage between CHn-CHn-1 falls below the LED short detection voltage (VLS), an LED short is detected. The FLAG pin will change to low. When SWn-1 turn OFF, the short detection function will be disable in the time (t LS). 𝑡𝐿𝑆 = 𝑡𝑃𝑆1 × 0.5 (𝑇𝑦𝑝) 𝑡𝐿𝑆𝐻 = 𝑡𝑃𝑆𝐻 × 0.5 (𝑇𝑦𝑝) when VHAZ=L(≤VHAZH -VHAZHYS) when VHAZ=H(≥VHAZH) The FLAG pin will change low to Hiz under following conditions. (1) or (2) or (3) (refer to Figure19 (a)) (1) UVLO detection → UVLO release → Status good delay time passed → FLAG=Hiz (2) Thermal shutdown detection → Thermal shutdown release → FLAG=Hiz (3) Input VCNT ≤ VCNTH-VCNTHYS → FLAG=Hiz The LED short detection function is invalid with regard to the unused switches set by the SEL pin. CHn+1 VLS VCHn_CHn-1 SWn CHn tLS SWn-1 FLAG CHn-1 (a) Normal Operation VLS CHn+1 VCHn_CHn-1 SWn tLS FLAG CHn SWn-1 CHn-1 (b) LED Short Operation Figure 13. Functionality of LED Short Detection .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 13/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued 10. LED Open Protection The BD18362EFV-M is built in LED open protection. While switch is turned OFF, the voltage between CHn-CHn-1 is monitored. If the voltage between CHn-CHn-1 is detected to be the LED open protection voltage (VLO) during the monitoring, SWn-1 will be turned ON immediately and this will prevent a destruction of the switch. When the tLO time has passed after SWn-1 turned OFF, the FLAG pin will change to low. The other switches keep lighting phase shift after detecting LED open. 𝑡𝐿𝑂 = 𝑡𝑃𝑆1 × 0.5 (𝑇𝑦𝑝) 𝑡𝐿𝑂𝐻 = 𝑡𝑃𝑆𝐻 × 0.5 (𝑇𝑦𝑝) when VHAZ=L(≤VHAZH -VHAZHYS) when VHAZ=H(≥VHAZH) The FLAG pin will change low to Hiz under following conditions. (1) or (2) or (3) (refer to Figure 19) (1) UVLO detection → UVLO release → FLAG=Hiz (2) Thermal shutdown detection → Thermal shutdown release → FLAG=Hiz (3) Input VCNT ≤ VCNTH-VCNTHYS → FLAG=Hiz The LED open protection function is invalid with regard to the unused switches set by the SEL pin. I LED I LED CHn+1 OFF CHn+1 SWn OFF SWn CHn CHn SWn-1 SWn-1 OFF ON CHn-1 (a) LED Open (SW=OFF) CHn-1 (b) LED Open (SW=ON) VLO VCHn_CHn-1 tLO FLAG (c) LED Open (Timing chart) Figure 14. Functionality of LED Open Protection .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 14/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued CP VCC ILED LED7 ON LED6 ON CH8 LED5 ON CH7 LED4 ON CH6 LED3 ON CH5 LED2 ON LED1 ON CH8 CH4 LED0 ON CH3 CH2 CMPLT CH1 LED7 LED6 LED5 LED4 LED3 LED2 LED1 LED0 CH0 FLAG (a) Normal Operation CP VCC LED7 ON LED6 ON CH7 LED5 ON LED SHORT DETECTION CH6 LED4 ON CH5 LED3 ON LED1 ON CH8 CH8 CH4 LED0 ON CH3 CH2 CMPLT CH1 ILED LED7 LED6 LED5 LED4 LED3 LED2 LED1 LED0 CH0 FLAG (b) LED Short Detection (e.g. LED2 Short Mode) VCC CP ILED LED7 ON LED6 ON CH8 LED5 ON LED OPEN PROTECTION CH7 LED4 ON CH6 LED3 ON CH5 LED1 ON CH8 CH4 LED0 ON CH3 CMPLT CH2 CH1 LED7 LED6 LED5 LED4 LED3 LED2 LED1 LED0 CH0 FLAG (c) LED Open Protection (e.g. LED2 Open Mode) Figure 15. Timing Chart (LED Short/LED Open) .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 15/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued 11. WDTDLY [Watchdog Timer for SETDLY] The BD18362EFV-M monitors the tDLY (sequential lighting start-up delay time). Since the tDLY cannot be set if the capacitor connected to the SETDLY pin has a short, the LEDs will come unlighted. The WDTDLY starts monitoring when the SG pin output has a Hiz and the CNT pin is given a high input (≥VCNTH). If the tDLY is not detected within tWDTDLY, there will be a time-out and the FLAG pin changes to low. When there is a time-out, the LEDs will all-light automatically. However, the switches are turned OFF sequentially (LEDs are light sequentially) at a fixed time (tPSH). The FLAG pin will change low to Hiz under following conditions. (1) or (2) or (3) (refer to Figure 19 (a)) (1) UVLO detection → UVLO release → FLAG=Hiz (2) Thermal shutdown detection → Thermal shutdown release → FLAG=Hiz (3) Input VCNT ≤ VCNTH-VCNTHYS → FLAG=Hiz VUVR VCC CNT VCNTH SG SETDLY CMPLT LED7 OFF LED7 ON LED6 LED6 OFF LED6 ON LED1 OFF LED1 ON ・・・ LED7 LED1 SETDLY CSETDLY LED0 LED0 OFF LED0 ON FLAG tWDTDLY Figure 16. Timing Chart (The SETDLY short to GND) .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 16/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued 12. WDTCLK [Watchdog Timer for SETCLK] The BD18362EFV-M monitors the sequential lighting phase time. Since the tCLK cannot be set if the capacitor connected to the SETCLK pin has a short, the LEDs will come unlighted. The WDTCLK starts monitoring when the SG pin change from low to Hiz and the CNT pin is given a high input (≥VCNTH). If the clock period (tCLK) is not detected within tWDTCLK, there will be a time-out and the FLAG pin changes to low. When there is a time-out, the LEDs will all-light automatically. However, the switches are turned OFF sequentially (LEDs are light sequentially) at a fixed time (tPSH). The FLAG pin will change low to Hiz under following conditions. (1) or (2) or (3) (refer to Figure 19) (1) UVLO detection → UVLO release → FLAG = Hiz (2) Thermal shutdown detection → Thermal shutdown release → FLAG = Hiz (3) Input VCNT ≤ VCNTH-VCNTHYS → FLAG = Hiz VUVR VCC CNT VCNTH SG SETDLY SETCLK CMPLT LED7 OFF LED7 ON LED6 LED6 OFF LED6 ON LED1 OFF LED1 ON ・・・ LED7 LED1 SETCLK CSETCLK LED0 LED0 OFF LED0 ON FLAG tWDTCLK Figure 17. Timing Chart (The SETCLK Short to GND) SETCLK t CLK CMPLT LED7 OFF LED7 ON LED6 LED6 OFF LED6 ON LED1 OFF LED1 ON ・・・ LED7 LED1 LED0 LED0 ON FLAG tWDTCLK Figure 18. Timing Chart (The CLK in Abnormal) .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 17/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Description of Blocks – continued 13. Monitor Function BD18362EFV-M has pins (SG, FLAG and CMPLT) for monitoring condition. These pins are open drain and needed pull up resistor for monitoring condition. LED SHORT detection SET LED OPEN detection RESET WDTDLY detction SET WDTCLK detction FLAG RESET VCNT ≤ VCNTH - V CNTHYS TSD detction UVLO detction (a) The FLAG Pin Equivalence Circuit SG TIMER TSD detction UVLO detction (b) The SG Pin Equivalence Circuit Lighting Complet CMPLT VCNT ≤ VCNTH - V CNTHYS TSD detction UVLO detction (c) The CMPLT Pin Equivalence Circuit Figure 19. Monitor Pin Equivalence Circuits .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 18/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Absolute Maximum Ratings (Ta=25°C) Parameter Symbol Rating Unit VCC -0.3 to +70 V VCNT, VHAZ -0.3 to +70 V VREG -0.3 to +7 ≤ VCC V SETDLY, SETCLK Voltage VSETDLY, VSETCLK -0.3 to VREG+0.3 ≤ +7 V SEL1, SEL2, SEL3 Voltage VSEL1, VSEL2, VSEL3 -0.3 to VREG+0.3 ≤ +7 V CMPLT, SG, FLAG Voltage VCMPLT, VSG, VFLAG -0.3 to +7 V VCP -0.3 to +67 V CP to CH8 Voltage VVCP_CH8 -0.3 to +7 V CFP to CFM Voltage VCFP_CFM -0.3 to +7 V VCHn -0.3 to +60 V VCHn_CHn-1 -0.3 to +20 V Maximum SWn Bypass Current(Note 2) ISWn 1.0 A Storage Temperature Range Tstg -55 to +150 °C Tjmax 150 °C Power Supply Voltage (VCC) CNT, HAZ Voltage VREG Voltage CP Voltage CHn Voltage(Note 1) CHn to CHn-1 Voltage(Note 1) Maximum Junction Temperature Caution 1: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over the absolute maximum ratings. Caution 2: Should by any chance the maximum junction temperature rating be exceeded the rise in temperature of the chip may result in deterioration of the properties of the chip. In case of exceeding this absolute maximum rating, increase the board size and copper area to prevent exceeding the maximum junction temperature rating. (Note 1) CHn: n=0 to 8 (Note 2) SWn: n=0 to 7 .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 19/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Thermal Resistance(Note 1) Parameter Symbol Thermal Resistance (Typ) Unit 1s(Note 3) 2s2p(Note 4) θJA 107.0 25.1 °C/W ΨJT 6 3 °C/W HTSSOP-B28 Junction to Ambient Junction to Top Characterization Parameter(Note 2) (Note 1) Based on JESD51-2A(Still-Air) (Note 2) The thermal characterization parameter to report the difference between junction temperature and the temperature at the top center of the outside surface of the component package. (Note 3) Using a PCB board based on JESD51-3. Layer Number of Measurement Board Single Material Board Size FR-4 114.3mm x 76.2mm x 1.57mmt Top Copper Pattern Thickness Footprints and Traces 70μm (Note 4)Using a PCB board based on JESD51-5, 7. Layer Number of Measurement Board 4 Layers Material Board Size FR-4 114.3mm x 76.2mm x 1.6mmt Top Thermal Via(Note 5) Pitch Diameter 1.20mm Φ0.30mm 2 Internal Layers Bottom Copper Pattern Thickness Copper Pattern Thickness Copper Pattern Thickness Footprints and Traces 70μm 74.2mm x 74.2mm 35μm 74.2mm x 74.2mm 70μm (Note 5) This thermal via connects with the copper pattern of all layers. Recommended Operating Conditions Parameter Symbol Min Typ Max Unit Supply Input Voltage(Note 6) (Note 7) VCC 5.5 13 60 V Operating Temperature Topr -40 +25 +125 °C Maximum Total LED Voltage VLED - - 48 V VCHn_CHn-1 1.2 - 9 V tPS1 5 - 100 ms tDLY - - 225 ms CHn to CHn-1 LED Input Range Sequential Lighting Phase Time Setting Range Sequential Lighting Start-up Delay Time Setting Range (Note 6) Supply input voltage range can be considered based on power dissipation. (Note 7) At start-up time, please apply a voltage above 6.0V once. The value is the voltage range after the temporary rise to 6.0V. Recommended Setting Parts Range Parameter Capacitor Connecting to the VREG Pin Capacitor for Charge Pump Resistor for Sequential Lighting Phase Time/ Sequential Lighting Start-up Delay Time Capacitor for Sequential Lighting Start-up Delay Time Capacitor for Sequential Lighting Phase Time .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 Symbol Min Typ Max Unit CVREG 1.0 2.2 4.7 μF CCP, CCF 0.001 0.047 0.22 μF RSET 6 - 40 kΩ CSETDLY - - 10 μF CSETCLK 0.001 - 0.047 μF 20/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Electrical Characteristics (Unless otherwise specified: VCC=13V Ta=-40°C to +125°C) Parameter Symbol Limit Min Typ Max Unit Conditions [Total] VCNT=0V, VCH0=0V RSET=22kΩ, CSETCLK=0.01μF VCC Input Current IVCC - 3.8 7.0 mA UVLO Detection Voltage VUVD 4.7 5.1 5.5 V VCC: Sweep down UVLO Release Voltage VUVR 4.95 5.40 5.85 V VCC: Sweep up UVLO Hysteresis Voltage VHYS - 0.3 - V VREG 4.5 5.0 5.5 V CVREG=2.2μF IVREG=0mA to 2mA Charge Pump Output Voltage VCP - - 7 V VCP-VCH8 Differential Voltage of Flying Capacitor VCF - - 7 V VCFP-VCFM Coefficient for Sequential Lighting Phase Time KPS 278 320 368 - tPS1=KPS x RSET x CSETCLK [s] VHAZ =0V Coefficient for Sequential Lighting Start-up Delay Time KDLY 2.23 2.67 3.20 - tDLY=KDLY x RSET x CSETDLY [s] tPSH 105 140 180 μs VHAZ=5V tPSL 105 140 180 μs VCNT=5V→0V CMPLT Output Voltage Low VCMPLTL - - 0.2 V ICMPLT=1mA CMPLT Leak Current ICMPLTLK - - 1 μA VCMPLT=5.5V SG Output Voltage Low VSGL - - 0.2 V ISG=1mA SG Leak Current ISGLK - - 1 μA VSG=5.5V FLAG Output Voltage Low VFLAGL - - 0.2 V IFLAG=1mA FLAG Leak Current IFLAGLK - - 1 μA VFLAG=5.5V tdSG 415 590 765 μs WDTDLY Time Out tWDTDLY 245 350 455 ms WDTCLK Time Out tWDTCLK 80 115 150 ms [Internal Reference Voltage] Regulator Output [Charge Pump] [SET, SETDLY, SETCLK] Sequential Lighting Phase Time In the Hazard Mode Turn Off Phase Time In the CNT=L [CMPLT, SG, FLAG] SG Delay Time .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 21/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Electrical Characteristics – continued (Unless otherwise specified: VCC=13V Ta=-40°C to +125°C) Parameter Symbol Limit Min Typ Max Unit Conditions [CNT, HAZ] CNT Pin Input Current 1 ICNT1 -10 -2.5 - μA VCNT=0V CNT Pin Input Current 2 ICNT2 - 0 5 μA VCNT=60V CNT Threshold Voltage VCNTH 0.9 1.0 1.1 V Sweep up VCNTHYS - 100 - mV HAZ Pin Input Current 1 IHAZ1 -10 -2.5 - μA VHAZ=0V HAZ Pin Input Current 2 IHAZ2 - 0 5 μA VHAZ=60V VHAZH 0.9 1.0 1.1 V Sweep up VHAZHYS - 100 - mV VSELH 3.6 - VREG V VSELL 0 - 1.1 V ISEL 10 20 30 μA VSEL1=5V, VSEL2=5V, VSEL3=5V RSW - 230 460 mΩ ISW=300mA RSW70 - 0.95 2.2 Ω All Switches On ISW70=300mA LED Open Detection Voltage VLO 9.0 - 15 V VCHn_CHn-1: Sweep up LED Short Detection Voltage VLS - - 1.2 V VCHn_CHn-1: Sweep up CNT Threshold Hysteresis Voltage Hazard Mode Threshold Voltage Hazard Mode Threshold Hysteresis Voltage [SEL1, SEL2, SEL3] SEL1, SEL2, SEL3 High Level Input Voltage SEL1, SEL2, SEL3 Low Level Input Voltage SEL1, SEL2, SEL3 Pin Input Current [CH] CHn to CHn-1 Switch ON Resistance CH8 to CH0 Switch Total ON Resistance .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 22/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Typical Performance Curves (Reference Data) (Unless otherwise specified: Ta=25°C VCC=13V) 7.0 5.5 5.4 6.0 5.0 5.2 5.1 4.0 3.0 Ta=-40 °C VREG[V] IVCC[mA] 5.3 Ta=+125 °C Ta=+25 °C 5.0 4.9 4.8 2.0 4.7 1.0 0.0 4.6 4.5 0 10 20 30 VCC[V] 40 50 60 -50 Figure 20. IVCC vs VCC -25 0 25 50 75 100 Temperature [°C] 125 150 125 150 Figure 21. VREG vs Temperature 3.2 370 360 3.0 350 340 2.8 KDLY KPS 330 320 310 2.6 300 290 2.4 280 270 -50 -25 0 25 50 75 100 Temperature [°C] 125 2.2 150 Figure 22. KPS vs Temperature (CSETCLK=0.0047μF, RSET=10kΩ) .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 -50 -25 0 25 50 75 100 Temperature [°C] Figure 23. KDLY vs Temperature (CSETDLY=0.01μF, RSET=10kΩ) 23/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Typical Performance Curves (Reference Data) - continued 180 180 170 170 160 160 150 150 tPSL[μs] tPSH[µs] (Unless otherwise specified: Ta=25°C VCC=13V) 140 140 130 130 120 120 110 110 100 -50 -25 0 25 50 75 100 Temperature[°C] 125 100 150 -50 Figure 24. tPSH vs Temperature 25 50 75 100 Temperature[°C] 125 150 0.30 0.25 0.25 Ta=-40°C 0.20 Ta=-40°C 0.20 VSGL[V] VCMPLTL[V] 0 Figure 25. tPSL vs Temperature 0.30 0.15 0.10 0.15 0.10 Ta=+125°C Ta=+25°C 0.05 0.00 -25 Ta=+125°C Ta=+25°C 0.05 0.0 0.5 1.0 ICMPLT[mA] 1.5 0.00 2.0 Figure 26. VCMPLTL vs ICMPLT .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 0.0 0.5 1.0 ISG[mA] 1.5 2.0 Figure 27. VSGL vs ISG 24/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Typical Performance Curves (Reference Data) - continued (Unless otherwise specified: Ta=25°C VCC=13V) 740 0.30 700 0.25 Ta=-40°C 660 620 tdSG[μs] VFLAGL[V] 0.20 0.15 580 540 0.10 Ta=+125°C Ta=+25°C 500 0.05 0.00 460 420 0.0 0.5 1.0 IFLAG[mA] 1.5 2.0 -50 -25 Figure 28. VFLAGL vs IFLAG 0 25 50 75 100 Temperature[°C] 125 150 125 150 Figure 29. tdSG vs Temperature 450 140 425 130 120 375 tWDTCLK[ms] tWDTDLY[ms] 400 350 325 110 100 300 90 275 250 -50 -25 0 25 50 75 100 Temperature[°C] 125 80 150 Figure 30. tWDTDLY vs Temperature .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 -50 -25 0 25 50 75 100 Temperature[°C] Figure 31. tWDTCLK vs Temperature 25/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Typical Performance Curves (Reference Data) - continued (Unless otherwise specified: Ta=25°C VCC=13V) 1.5 400 1.4 350 1.3 300 1.2 RSW70[Ω] RSW[mΩ] 250 200 150 1.0 0.9 0.8 100 0.7 50 0 1.1 0.6 -50 -25 0 25 50 75 100 125 0.5 150 -50 -25 0 Temperature[℃] 15.0 1.2 14.0 1.1 13.0 1.0 12.0 0.8 10.0 0.7 -25 0 25 50 75 100 Temperature[°C] 125 0.6 150 Figure 34. VLO vs Temperature .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 75 100 125 150 125 150 0.9 11.0 -50 50 Figure 33. RSW70 vs Temperature (ISW70=300mA) VLS[V] VLO[V] Figure 32. RSW vs Temperature (ISW=300mA) 9.0 25 Temperature[℃] -50 -25 0 25 50 75 100 Temperature[°C] Figure 35. VLS vs Temperature 26/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Timing Chart VUVR VCC VUVD tdSG SG SETDLY tdSG t PS1 SW0 Hiz SW1 Hiz SW2 Hiz SW3 Hiz SW4 Hiz SW5 Hiz SW6 Hiz SW7 Hiz tPS1 tPS1 tPS1 ON t PS1 t PS1 tPS1 tPS1 OFF ON Hiz OFF ON Hiz OFF ON Hiz OFF ON Hiz OFF ON Hiz OFF ON Hiz OFF ON Hiz OFF Hiz FLAG CMPLT ILED (External input) Figure 36. Typical Timing Chart .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 27/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Recommended Application Circuit VCC CVCC RHAZ CVREG CSETDLY CSETCLK U1 BD18362EFV-M CNT HAZ CP VREG SETDLY CH8 SETCLK CH7 SET To LED Driver Recommended Parts List (8 switches, tPS1=15ms, tDLY=1.25ms) Parts Symbol IC Resistor Capacitor CCF CCP LED7 LED6 CH6 LED5 CH5 SEL1 CH4 SEL2 CH3 SEL3 CH2 CMPLT CH1 FLAG CH0 RCMPLT RSG CFP CFM RSET RFLAG ILED SG LED4 LED3 LED2 LED1 LED0 GND Parts Name Value Unit Product Maker BD18362EFV-M - - ROHM RHAZ MCR03EZPJ103 10 kΩ ROHM RSET MCR03EZPD1002 10 kΩ ROHM RCMPLT MCR03EZPJ223 22 kΩ ROHM RFLAG MCR03EZPJ223 22 kΩ ROHM RSG MCR03EZPJ223 22 kΩ ROHM CVCC GCM31CC72A225KE01L 2.2 μF murata U1 CVREG GCM21BR71C225KA49 2.2 μF murata CSETDLY GCM188R11H473JA40 0.047 μF murata CSETCLK GCM2162C1H472JA01 0.0047 μF murata CCF GCM188R11H473JA40 0.047 μF murata CCP GCM188R11H473JA40 0.047 μF murata ●CVCC: Choose rated voltage according to input voltage range. ●In case of BD18362EFV-M and the LEDs are connected with long wires, it might be triggered the malfunction of LED open protection and LET short detection by ringing in the voltage which is produced by switching on and off of SW between IC channels. Moreover, if the ringing level becomes higher than the case of above, it might damage the IC. Confirm the ringing level with enough evaluation and respond to it by placing RC snubber circuit between CH n and CHn-1. .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 28/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M I/O Equivalence Circuits No. Symbol Equivalence Circuit No. Symbol VREG VREG 2 CNT Equivalence Circuit CNT 9 SETCLK SETCLK 2MΩ (Typ) GND GND VREG VREG 3 HAZ 10 HAZ SETDLY SETDLY 2MΩ (Typ) GND GND VREG VCC 5 VREG VREG GND 11 SET 350kΩ (Typ) 50kΩ (Typ) GND VREG 6 7 8 SEL1 SEL2 SEL3 SEL1 SEL2 SEL3 250kΩ (Typ) 12 13 14 CMPLT SG FLAG CMPLT SG FLAG GND GND .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 SET 29/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M I/O Equivalence Circuits - continued No. Symbol Equivalence Circuit CFP CFM GND CP CH8 VREG GND GND GND CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 CP CFP CFM CH7 ・・・ 17 18 19 20 21 22 23 24 25 26 27 28 GND CH2 GND VCP CH1 GND CH0 GND .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 30/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Operational Notes 1. Reverse Connection of Power Supply Connecting the power supply in reverse polarity can damage the IC. Take precautions against reverse polarity when connecting the power supply, such as mounting an external diode between the power supply and the IC’s power supply pins. 2. Power Supply Lines Design the PCB layout pattern to provide low impedance supply lines. Furthermore, connect a capacitor to ground at all power supply pins. Consider the effect of temperature and aging on the capacitance value when using electrolytic capacitors. 3. Ground Voltage Ensure that no pins are at a voltage below that of the ground pin at any time, even during transient condition. 4. Ground Wiring Pattern When using both small-signal and large-current ground traces, the two ground traces should be routed separately but connected to a single ground at the reference point of the application board to avoid fluctuations in the small-signal ground caused by large currents. Also ensure that the ground traces of external components do not cause variations on the ground voltage. The ground lines must be as short and thick as possible to reduce line impedance. 5. Recommended Operating Conditions The function and operation of the IC are guaranteed within the range specified by the recommended operating conditions. The characteristic values are guaranteed only under the conditions of each item specified by the electrical characteristics. 6. Inrush Current When power is first supplied to the IC, it is possible that the internal logic may be unstable and inrush current may flow instantaneously due to the internal powering sequence and delays, especially if the IC has more than one power supply. Therefore, give special consideration to power coupling capacitance, power wiring, width of ground wiring, and routing of connections. 7. Operation Under Strong Electromagnetic Field Operating the IC in the presence of a strong electromagnetic field may cause the IC to malfunction. 8. Testing on Application Boards When testing the IC on an application board, connecting a capacitor directly to a low-impedance output pin may subject the IC to stress. Always discharge capacitors completely after each process or step. The IC’s power supply should always be turned off completely before connecting or removing it from the test setup during the inspection process. To prevent damage from static discharge, ground the IC during assembly and use similar precautions during transport and storage. 9. Inter-pin Short and Mounting Errors Ensure that the direction and position are correct when mounting the IC on the PCB. Incorrect mounting may result in damaging the IC. Avoid nearby pins being shorted to each other especially to ground, power supply and output pin. Inter-pin shorts could be due to many reasons such as metal particles, water droplets (in very humid environment) and unintentional solder bridge deposited in between pins during assembly to name a few. 10. Unused Input Pins Input pins of an IC are often connected to the gate of a MOS transistor. The gate has extremely high impedance and extremely low capacitance. If left unconnected, the electric field from the outside can easily charge it. The small charge acquired in this way is enough to produce a significant effect on the conduction through the transistor and cause unexpected operation of the IC. So unless otherwise specified, unused input pins should be connected to the power supply or ground line. .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 31/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Operational Notes – continued 11. Regarding the 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 the P layers with the N layers of other elements, creating a parasitic diode or transistor. For example (refer to figure below): When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode. When GND > Pin B, the P-N junction operates as a parasitic transistor. Parasitic diodes inevitably occur in the structure of the IC. The operation of parasitic diodes can result in mutual interference among circuits, operational faults, or physical damage. Therefore, conditions that cause these diodes to operate, such as applying a voltage lower than the GND voltage to an input pin (and thus to the P substrate) should be avoided. Resistor Transistor (NPN) Pin A Pin B C Pin A N P+ N P N P+ N Parasitic Elements N P+ GND E N P N P+ B N C E Parasitic Elements P Substrate P Substrate Parasitic Elements Pin B B Parasitic Elements GND GND N Region close-by GND Figure 37. Example of monolithic IC structure 12. Ceramic Capacitor When using a ceramic capacitor, determine a capacitance value considering the change of capacitance with temperature and the decrease in nominal capacitance due to DC bias and others. 13. Area of Safe Operation (ASO) Operate the IC such that the output voltage, output current, and the maximum junction temperature rating are all within the Area of Safe Operation (ASO). 14. Thermal Shutdown Circuit(TSD) This IC has a built-in thermal shutdown circuit that prevents heat damage to the IC. Normal operation should always be within the IC’s maximum junction temperature rating. If however the rating is exceeded for a continued period, the junction temperature (Tj) will rise which will activate the TSD circuit that will turn OFF all output pins. When the Tj falls below the TSD threshold, the circuits are automatically restored to normal operation. Note that the TSD circuit operates in a situation that exceeds the absolute maximum ratings and therefore, under no circumstances, should the TSD circuit be used in a set design or for any purpose other than protecting the IC from heat damage. .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 32/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Ordering Information B D 1 8 3 Part Number 6 2 E F V Package EFV: HTSSOP-B28 - ME2 Product Rank M: for Automotive Packaging and forming specification E2: Embossed tape and reel (HTSSOP-B28) Marking Diagrams HTSSOP-B28 (TOP VIEW) Part Number Marking B D 1 8 3 6 2 LOT Number 1PIN MARK .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 33/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Physical Dimension, Tape and Reel Information Package Name .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 HTSSOP-B28 34/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 BD18362EFV-M Revision History Date Rev. 13.Jun.2017 001 Changes New Release Page 21 28.Oct.2020 002 Electrical Characteristics SET Pin Output Voltage Delete Page 33 Marking Diagrams D18362 → BD18362 .www.rohm.com © 2017 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 35/35 TSZ02201-0T1T0C700250-1-2 28.Oct.2020 Rev.002 Notice Precaution on using ROHM Products 1. If you intend to use our Products in devices requiring extremely high reliability (such as medical equipment (Note 1), aircraft/spacecraft, nuclear power controllers, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific Applications. (Note1) Medical Equipment Classification of the Specific Applications JAPAN USA EU CHINA CLASSⅢ CLASSⅡb CLASSⅢ CLASSⅢ CLASSⅣ CLASSⅢ 2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which a failure or malfunction of our Products may cause. The following are examples of safety measures: [a] Installation of protection circuits or other protective devices to improve system safety [b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. Our Products are not designed under any special or extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any special or extraordinary environments or conditions. If you intend to use our Products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents [b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust [c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves [e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items [f] Sealing or coating our Products with resin or other coating materials [g] Use of our Products without cleaning residue of flux (Exclude cases where no-clean type fluxes is used. However, recommend sufficiently about the residue.); or Washing our Products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] Use of the Products in places subject to dew condensation 4. The Products are not subject to radiation-proof design. 5. Please verify and confirm characteristics of the final or mounted products in using the Products. 6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse, is applied, confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect product performance and reliability. 7. De-rate Power Dissipation depending on ambient temperature. When used in sealed area, confirm that it is the use in the range that does not exceed the maximum junction temperature. 8. Confirm that operation temperature is within the specified range described in the product specification. 9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in this document. Precaution for Mounting / Circuit board design 1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2. In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products, please consult with the ROHM representative in advance. For details, please refer to ROHM Mounting specification Notice-PAA-E © 2015 ROHM Co., Ltd. All rights reserved. Rev.004 Precautions Regarding Application Examples and External Circuits 1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the characteristics of the Products and external components, including transient characteristics, as well as static characteristics. 2. You agree that application notes, reference designs, and associated data and information contained in this document are presented only as guidance for Products use. Therefore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. Precaution for Electrostatic This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron, isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control). Precaution for Storage / Transportation 1. Product performance and soldered connections may deteriorate if the Products are stored in the places where: [a] the Products are exposed to sea winds or corrosive gases, including Cl 2, H2S, NH3, SO2, and NO2 [b] the temperature or humidity exceeds those recommended by ROHM [c] the Products are exposed to direct sunshine or condensation [d] the Products are exposed to high Electrostatic 2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is exceeding the recommended storage time period. 3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of which storage time is exceeding the recommended storage time period. Precaution for Product Label A two-dimensional barcode printed on ROHM Products label is for ROHM’s internal use only. Precaution for Disposition When disposing Products please dispose them properly using an authorized industry waste company. Precaution for Foreign Exchange and Foreign Trade act Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and Foreign trade act, please consult with ROHM in case of export. Precaution Regarding Intellectual Property Rights 1. All information and data including but not limited to application example contained in this document is for reference only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. 2. ROHM shall not have any obligations where the claims, actions or demands arising from the combination of the Products with other articles such as components, circuits, systems or external equipment (including software). 3. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any third parties with respect to the Products or the information contained in this document. Provided, however, that ROHM will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to manufacture or sell products containing the Products, subject to the terms and conditions herein. Other Precaution 1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM. 2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of ROHM. 3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the Products or this document for any military purposes, including but not limited to, the development of mass-destruction weapons. 4. The proper names of companies or products described in this document are trademarks or registered trademarks of ROHM, its affiliated companies or third parties. Notice-PAA-E © 2015 ROHM Co., Ltd. All rights reserved. Rev.004