BM81028AMWV Datasheet, PDF (1/48 Pages) Rohm – Multi-Channel System Power Supply IC

Datasheet
Power Supply IC Series for TFT-LCD Panels
Multi-Channel
System Power Supply IC
BM81028AMWV
●General Description
BM81028AMWV is a system power supply IC for
TFT-LCD panels which are used in monitors, notebook
type displays, and tablets.
This IC incorporates HAVDD, VCOM amplifier in addition
to the power supply for panel driver (SOURCE, GATE,
and LOGIC power supplies).
Moreover, this IC has a built-in EEPROM for sequence
and output voltage setting retention.
●Applications
TFT-LCD Panels which are used in
Monitors, Note PCs and Tablets.
●Features
 Input voltage range:
2.7V to 5.5V
 Standby current:
1.4μA (Typ)
 Operating temperature range:
-40℃ to +85℃
 Step-down DC/DC converter 2-channels
(Synchronous rectification)
 Step-up DC/DC converter
(Integrated load switch and Synchronous rectification)
 HAVDD amplifier (8bit Resolution)
 VCOM amplifier (8bit Resolution)
 Positive charge pump (Integrated diode)
 Negative charge pump
 I²C Interface Output Voltage Setting Control Function
(Integrated EEPROM)
 Switching frequency switching function
(600kHz,1200kHz)
 Protection circuits
 Under-Voltage Lockout
 Thermal Shut Down
 Over-Current Protection
 Over-Voltage Protection
 Short Circuit Protection (Timer Latch type)
 Input tolerant (SCL, SDA,EN)
●Package
UQFN28V4040A
W(Typ) D(Typ) H(Max)
4.0mm x 4.00mm x 1.00m
●Typical Application Circuit
Fig.1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
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TSZ02201-0313AAF00430-1-2
12.May.2015 Rev.003