Datasheet Power Supply IC Series for TFT-LCD Panels for Automotive Gamma Voltage Generated IC with Built-in DAC BD81849MUV-C General Description Key Specifications The feature of gamma voltage generated IC with Built-in VDD Input Voltage Range: 2.1V to 3.6V DAC BD81849MUV-C provides a single-chip solution VCC Input Voltage Range: 10.0V to 18.0V with a high-precision 10bit DAC setting controlled by I2C Operating Temperature Range: -40C to +105C BUS Control and a Buffer AMP (12ch). EEPROM Auto-read function is also incorporated. Special Characteristics FB Regulation Voltage: Features 2% (Ta = -25C to +105C) (Note 1) AEC-Q100 Qualified DAC Output Voltage Precision: Built-in 10bit DAC 200mV (Ta = -25C to +105C) Built-in DAC Output Buffer Amplifier (12ch) Double Register Switching Function (SEL) Package I2C BUS Control (SDA, SCL) W(Typ) x D(Typ) x H(Max) STANDARD-MODE, FAST-MODE Changeable VQFN32SV5050 5.0mm x 5.0mm x 1.0mm EEPROM Auto-read Function Protection Circuits: Under Voltage Lock Out (UVLO) Over Voltage Protection (OVP) Thermal Shutdown Circuit (TSD) Power ON Reset Circuit (Note 1) Grade 2 Application TFT-LCD Panels which are used in car navigation, in-vehicle center panel, and instrument cluster Typical Application Circuit (TOP VIEW) 24 23 22 21 20 19 18 17 OUT1 OUT10 25 16 OUT0 OUT11 15 26 N.C. AGND 27 14 V VCC VCC DACGND 28 13 N.C. TEST 29 12 REFIN SEL 30 11 V VDD VDAC SLAVE/AR 31 10 VVDD V VDD FB VDD 32 9 1 2 3 4 5 6 7 8 Figure 1. Application Circuit Product structure : Silicon monolithic integrated circuit This product has no designed protection against radioactive rays. www.rohm.com TSZ02201-0313AAF00750-1-2 2017 ROHM Co., Ltd. All rights reserved. 1/33 TSZ22111 14 001 6. Jul. 2017 Rev.001 GND OUT2 VVDD A0 OUT3 V VDD A1 OUT4 VVDD A2 OUT5 SDA OUT6 SCL OUT7 EN OUT8 V VDD EN AR OUT9B D81849MUV-C Contents General Description ...................................................................................................................................................................... 1 Features ......................................................................................................................................................................................... 1 Application .................................................................................................................................................................................... 1 Key Specifications ........................................................................................................................................................................ 1 Special Characteristics ................................................................................................................................................................ 1 Package ......................................................................................................................................................................................... 1 Typical Application Circuit ........................................................................................................................................................... 1 Pin Configuration .......................................................................................................................................................................... 3 Pin Descriptions ........................................................................................................................................................................... 3 Block Diagram ............................................................................................................................................................................... 4 Description of Blocks ................................................................................................................................................................... 5 Absolute Maximum Ratings ......................................................................................................................................................... 6 (Note 3) Thermal Resistance ............................................................................................................................................................. 6 Recommended Operating Conditions ........................................................................................................................................ 7 Electrical Characteristics ............................................................................................................................................................. 8 Typical Performance Curve (Reference Data) .......................................................................................................................... 10 Application Example .................................................................................................................................................................. 15 Application Circuit Components List ........................................................................................................................................ 15 Serial Communications .............................................................................................................................................................. 16 Double Register Switching Function ........................................................................................................................................ 16 Gamma Output Setting ............................................................................................................................................................... 16 Output Voltage Setting Mode ..................................................................................................................................................... 17 REGISTER ADDRESS ................................................................................................................................................................. 22 Power Supply Sequence ............................................................................................................................................................ 23 I2C BUS Control Timing Chart ................................................................................................................................................... 24 Selection of Components Externally Connected ..................................................................................................................... 25 PCB Layout Guide ...................................................................................................................................................................... 25 I/O Equivalence Circuit ............................................................................................................................................................... 26 Operational Notes ....................................................................................................................................................................... 29 Ordering Information .................................................................................................................................................................. 31 Marking Diagram ......................................................................................................................................................................... 31 Physical Dimension, Tape and Reel Information ..................................................................................................................... 32 Revision History ......................................................................................................................................................................... 33 www.rohm.com TSZ02201-0313AAF00750-1-2 2017 ROHM Co., Ltd. All rights reserved. 2/33 TSZ22111 15 001 6. Jul. 2017 Rev.001