BM81110MUW Datasheet, PDF (1/50 Pages) Rohm – 12V Input Multi-Channel System Power Supply IC

Datasheet
Power supply IC series for TFT-LCD panels
12V Input Multi-Channel
System Power Supply IC
BM81110MUW
General Description
BM81110MUW is a system power supply for TFT-LCD
panels used for liquid crystal TVs. This IC is
incorporated with Negative and Positive charge pump
controllers and Gate Pulse Modulation (GPM) function. It
also features built-in EEPROM to contain each setting
voltage, soft start time, etc.
Features
■ Step-up DC/DC converter (AVDD)
(Synchronous rectification, built-in load switch)
■ Step-down DC/DC converter 1 (VIO)
(Non-synchronous rectification)
■ Step-down DC/DC converter 2 (VCORE)
(Synchronous rectification)
■ Step-down DC/DC converter 3 (HAVDD)
(Synchronous rectification)
■ Positive charge pump controller (VGH)
■ Negative charge pump controller (VGL)
■ Gate Pulse Modulation (GPM) function
■ Output voltage control by I2C
■ Built-in EEPROM
■ Switching Frequency 750kHz (AVDD, VIO)
■ Switching Frequency 1MHz (VCORE, HAVDD)
Applications
■ TFT-LCD panel
Typical Application Circuit（TOP VIEW）
SW
VGH
Key Specifications
 Input voltage range：
 AVDD Output voltage range：
 VIO Output voltage range：
 VCORE Output voltage range：
 HAVDD Output voltage range：
 VGH Output voltage range：
 VGL Output voltage range：
 Switching Frequency：
 Operating temperature range：
8.6V to 14.7V
13.5V to 19.8V
2.2V to 3.7V
0.8V to 3.3V
4.8V to 11.1V
20V to 35V
-14.5V to -5.5V
750kHz(Typ)
1MHz(Typ)
-40℃ to +85℃
Package
VQFN40W6060A
W(Typ) x D(Typ) x H(Max)
6.00mm x 6.00mm x 0.8mm
AVDD
HAVDD
VCORE
VIO
VIN
EN
PGND2
SWB2
VDD2
CTRL
VINB2
VDD1
SWB1
SWB1
N.C.
VIN
BM81110MUW
VGL
N.C.
SWO
SWI
SW
SW
PGND
PGND
NTC
VL
SWB1
VGL
AVDD
VIN
Θ
Figure1. Application Circuit
○Product structure：Silicon monolithic chip
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This chip
has no designed
1/46
protection against radioactive rays.
TSZ02201-0313AAF00410-1-2
2015.08.10 Rev.002