Datasheet > G5520

G5520

更新时间： 2024-11-15 01:25:51

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描述
Bias Power Supply for TFT LCD Panels

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中文翻译

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数据手册

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G5520 数据手册

Global Mixed-mode Technology Inc.

G5520

Bias Power Supply for TFT LCD Panels

Features

2.5V to 5.5V Input Supply Range

regulator with an integrated 20V N-Channel 0.7Ω

1.2MHz Current-Mode Boost Regulator

Fast Transient Response to Pulse Load

±1% Accurate Output Voltage

Built-In 20V/1.8A, 0.7Ω N-Channel MOSFET

High Efficiency up to 90%

MOSFET that allows the use of ultra-small inductors

and ceramic capacitors. It provides fast transient re-

sponse to pulsed loading while achieving efficiency

over 90%. The device can produce output voltage as

high as 18V from an input as low as 2.8V.

Over-Current Protection

The V_COMbuffer can drive the LCD V_COMvoltage that

features high short-circuit current (150mA), fast slew

rate (12V/μs), wide bandwidth (12MHz) and rail-to-rail

input/output.

Output Under-Voltage Protection

High-Performance Operational Amplifier

±150mA Output Short-Circuit Current

12V/μs Slew Rate

12MHz, -3dB Bandwidth

Rail-to-Rail Input and Output

600kHz Negative Charge Pump Driver for V_GL

A positive and a negative charge-pump driver provide

adjustable regulated output voltages V_GHand V_GLto

bias the TFT. Both the charge-pump driver operate

with 600kHz switching frequency.

600kHz Positive Charge Pump Driver for V_GH

Power-On Sequence Control

Thermal-Overload Protection

The G5520 includes internal power-up sequencing,

over/under voltage protections of the boost converter,

and over temperature protection to ensure in safe op-

erating.

TQFN3X3-16 Package

Applications

Photo Frame

GPS

UMPC

The G5520 are available in a 16-pin 3X3TQFN pack-

ages.

General Description

Ordering Information

The G5520 includes a high-performance boost regu-

lator, a V_COMbuffer (unity gain OPA), a V_GHcharge

pump driver, and a VGL charge pump driver for ac-

tive-matrix thin-film transistor (TFT) liquid-crystal dis-

plays (LCDs).

ORDER

NUMBER

G5520R41U

TEMP.

PACKAGE

(Green)

MARKING

RANGE

5520

-40°C to +85°C TQFN3X3-16

Note: R4:TQFN3X3-16

Bonding Code: 1

U: Tape & Reel

The boost converter provides the regulated supply

voltage for the panel source driver ICs. The converter

is a high switching frequency (1.2MHz) current mode

Pin Configuration

DRVN

11 IN

REF

AGND

Thermal

Pad

10 LX

PGND

G5520 TQFN3X3-16

Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.

Ver: 0.5

Oct 15, 2009

TEL: 886-3-5788833

http://www.gmt.com.tw

中文翻译

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与G5520相关器件

型号	品牌	获取价格	描述	数据表
G5520A	GMT	获取价格	Bias Power Supply for TFT LCD Panels
G5520A/S	GMT	获取价格	Async-Boost, VGH/VGL Charge-Pump, VCOM, G5520A With EN, G5520S With XAO
G5521	GMT	获取价格	Integrated Multi-Channel DC-DC Converter for TFT-LCD Panels
G5521/A	GMT	获取价格	Async-Boost, VGH Charge-Pump, VCOM, GPM, Voltage Detector, LDO
G5524A	GMT	获取价格	Integrated Power Supply for TFT-LCD Panels with 4-Channel White LED Driver
G5529	GMT	获取价格	Async-Boost, VGH Charge-Pump, VCOM, GPM, Voltage Detector
G553	GMT	获取价格	Power Distribution Switch
G5535	GMT	获取价格	Charge-Pumps and High-Current OP
G554	GMT	获取价格	Dual Power Distribution Switch
G556	GMT	获取价格	Dual Power Distribution Switch

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