25 26 27 28 29 30 31 32 Datasheet Power Supply IC Series for TFT-LCD Panels Automotive Panel Power Management IC BM81810MUF-M General Description Features (Note 1) BM81810MUF-M is a power management IC for AEC-Q100 Qualified TFT-LCD panels which are used in car navigation, Alternative Synchronous Buck DC/DC converter or LDO in-vehicle center panel, and instrument cluster. for VDD output This IC incorporates VCOM amplifier, Gate Pulse Synchronous Boost DC/DC converter for AVDD output Modulation (GPM) in addition to the power supply for with integrated load switch. panel driver (SOURCE, GATE, and LOGIC power VCOM amplifier with 7bit calibrator supplies). Moreover, this IC has a built-in EEPROM for Positive charge pump (Integrated diode, x2/x3) for VGH sequence and output voltage setting retention. output Negative charge pump for VGL output VGH and VCOM temperature compensation Key Specifications Gate Pulse Modulation(GPM) Input voltage range: 2.6V to 5.5V 2 I C Interface Output Voltage Setting Control Function AVDD Output voltage range: 5.0V to 17.0V (Integrated EEPROM) VGH Output voltage range: 8.0V to 35.0V Switching frequency switching function VGL Output voltage range: -4.0V to -14.0V (525kHz, 1.05MHz, 2.1MHz) VDD Output voltage range: 0.9V to 3.4V Protection circuits VCOM Output current: 200 mA (Typ) Under-Voltage Lockout Switching Frequency: 525KHz, 1.05MHz, 2.1MHz Thermal Shut Down Operating temperature range: -40C to +105C Over-Current Protection Standby current: 2.0 A (Typ) Over-Voltage Protection Under Voltage Protection (Timer Latch type) Special Characteristics Input tolerant (SCL, SDA, EN, GSIN) AVDD output voltage accuracy: 2% (Note1: Grade 2) Oscillator Frequency: 10% Package W(Typ) x D(Typ) x H(Max) Applications VQFN32FBV050 5.0mm x 5.0mm x 1.0mm TFT-LCD Panels which are used in car navigation, in-vehicle center panel, and instrument cluster. Typical Application Circuit (TOP VIEW) R NTC2 R NTC3 WPN R NTC1 R FLT VIN R RE GSOUT VIN R PG VGH FAULT C DRP2 PG / LDSW CPP2 C VGH C VCP VIN VCP GSIN D VGL C DRP1 SDA CPP1 R RST SCL DRP DRN RST C DRN VGL VDD SWB VCOM L SWB C VDD EN C VCOM C VGL 1 2 3 4 5 6 7 8 AVDD AVDD C VINB C REG (D SW) VIN C AVD C VIN C LSO Product structure : Silicon integrated circuit This product has no designed protection against radioactive rays www.rohm.com TSZ02201-0A3A0AS00510-1-2 2020 ROHM Co., Ltd. All rights reserved. 1/75 TSZ22111 14 001 15.May.2020 Rev.001 VREG NTC VLSO RE L SW SW 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24BM81810MUF-M Contents General Description ........................................................................................................................................................................ 1 Key Specifications .......................................................................................................................................................................... 1 Special Characteristics ................................................................................................................................................................... 1 Applications .................................................................................................................................................................................... 1 Features.......................................................................................................................................................................................... 1 Package.................................................................................................................................................................. 1 Typical Application Circuit ............................................................................................................................................................... 1 Pin Configuration ............................................................................................................................................................................ 3 Pin Descriptions .............................................................................................................................................................................. 3 Absolute Maximum Ratings ............................................................................................................................................................ 4 Thermal Resistance ........................................................................................................................................................................ 5 Recommended Operating Ratings ................................................................................................................................................ 5 Electrical Characteristics ............................................................................................................................................................... 6 Typical Performance Curves ......................................................................................................................................................... 10 Application Example 1 ................................................................................................................................................................ 25 Timing Chart1 ............................................................................................................................................................................... 27 Application Example 2 ................................................................................................................................................................ 29 Timing Chart2 ............................................................................................................................................................................... 29 Application Example 3 ................................................................................................................................................................ 31 Timing Chart3 ............................................................................................................................................................................... 33 Serial communication ................................................................................................................................................................... 35 WPN Timing .................................................................................................................................................................................. 36 I2C Timing Diagram ...................................................................................................................................................................... 37 Automatic EEPROM Read Function at Start-up ........................................................................................................................... 38 EEPROM Parameter Setting ........................................................................................................................................................ 39 Register Map ................................................................................................................................................................................ 40 Command Table ............................................................................................................................................................................ 41 Check Sum ................................................................................................................................................................................... 45 Soft Start Time .............................................................................................................................................................................. 46 Block Diagram .............................................................................................................................................................................. 47 AVDD Block Function.................................................................................................................................................................... 48 VGH Block Function ..................................................................................................................................................................... 51 VGL Block Function ...................................................................................................................................................................... 54 VCOM Block Function .................................................................................................................................................................. 55 VDD Block Function ...................................................................................................................................................................... 56 GPM Block Function ..................................................................................................................................................................... 58 RESET Block Function ................................................................................................................................................................. 59 PG/LDSW Block Function ............................................................................................................................................................. 60 NTC Block Function ...................................................................................................................................................................... 61 EN Block Function ........................................................................................................................................................................ 61 VGH and VCOM temperature compensation ................................................................................................................................ 62 FAULT Block Function .................................................................................................................................................................. 63 Fail Register Function ................................................................................................................................................................... 63 Protection function explanation of POWER MANAGEMENT block .............................................................................................. 64 Double Register ............................................................................................................................................................................ 65 Data Refresh ................................................................................................................................................................................. 65 PCB Layout Guide ........................................................................................................................................................................ 66 EMC Layout Guide ....................................................................................................................................................................... 67 I/O Equivalence Circuit ................................................................................................................................................................. 68 Operational Notes ......................................................................................................................................................................... 71 Ordering Information ..................................................................................................................................................................... 73 Marking Diagram .......................................................................................................................................................................... 73 Physical Dimension, Tape and Reel Information ........................................................................................................................... 74 Revision History ............................................................................................................................................................................ 75 . www.rohm.com TSZ02201-0A3A0AS00510-1-2 2020 ROHM Co., Ltd. All rights reserved. 2/75 TSZ22111 15 001 15.May.2020 Rev.001