Datasheet > BM81028AMWV

BM81028AMWV

更新时间： 2024-02-01 12:14:18

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
48页	1955K
描述
Multi-Channel System Power Supply IC

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BM81028AMWV 数据手册

Datasheet

Power Supply IC Series for TFT-LCD Panels

Multi-Channel

System Power Supply IC

BM81028AMWV

●General Description

●Features

BM81028AMWV is a system power supply IC for

TFT-LCD panels which are used in monitors, notebook

type displays, and tablets.

 Input voltage range:

 Standby current:

 Operating temperature range:

2.7V to 5.5V

1.4μA (Typ)

-40℃ to +85℃

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.

 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

●Applications

TFT-LCD Panels which are used in

Monitors, Note PCs and Tablets.

 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 ○This product has no designed protection against radioactive rays

.www.rohm.com

TSZ02201-0313AAF00430-1-2

12.May.2015 Rev.003

1/44

TSZ22111・14・001

12 3 4 5 6 7...48

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