MAX17103ETJ View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX17103ETJ

DC-DC Converter with Integrated Scan Driver, VGL Controller, Op Amp, and LDO for TFT LCD

Maxim Integrated 

19-4445; Rev 0; 2/09

EVAALVUAAILTAIOBNLEKIT

DC-DC Converter with Integrated Scan Driver,

VGL Controller, Op Amp, and LDO for TFT LCD

General Description

The MAX17103 includes a high-performance step-up

regulator, a 350mA low-dropout linear regulator, a high-

speed operational amplifier, a negative linear regulator

controller, and a high-voltage, level-shifting scan driver.

The device is optimized for thin-film transistor (TFT) liq-

uid-crystal display (LCD) applications.

The step-up DC-DC converter provides the regulated

supply voltage for panel source driver ICs. The high

1.2MHz switching frequency allows the use of ultra-

small inductors and ceramic capacitors. The current-

mode control architecture provides fast-transient

response to pulsed loads typical of source driver loads.

The step-up regulator features an adjustable soft-start

and an adjustable cycle-by-cycle current limit.

The high-current operational amplifier is designed to

drive the LCD backplane (VCOM). The amplifier fea-

tures high output current (±200mA), fast slew rate

(50V/µs), wide bandwidth (12MHz), and rail-to-rail

inputs and outputs.

The low-voltage LDO linear regulator has an integrated

0.8Ω pass element and can provide at least 350mA.

The output voltage is accurate within ±1%.

The high-voltage, level-shifting scan driver is designed to

drive the TFT panel gate drivers. Its three outputs can

swing up to 40V (max) to swiftly drive capacitive loads. To

save power, the two complementary outputs are designed

to allow charge sharing during state changes.

The MAX17103 is available in a 32-pin, 5mm x 5mm,

thin QFN package with a maximum thickness of 0.8mm

for thin LCD panels.

Applications

Notebook Computer Displays

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX17103ETJ+

-40°C to +85°C 32 Thin QFN-EP*

AUO-P1721.14

-40°C to +85°C 32 Thin QFN-EP*

+Denotes lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

Features

o 2.3V to 5.5V IN Supply Voltage Range

o 1.2MHz Current-Mode Step-Up Regulator

Fast-Transient Response

High-Accuracy Reference (1%)

Integrated 16V, 2A, 200mΩ MOSFET

High Efficiency (> 85%)

Adjustable Cycle-by-Cycle Current Limit

o High-Performance Operational Amplifier

200mA Output Short-Circuit Current

50V/µs Slew Rate

12MHz, -3dB Bandwidth

o Low-Dropout Linear Regulator

High-Accuracy Output Voltage (1.0%)

o High-Voltage Drivers with Scan Logic

+35V to -15V Outputs

40V (Max) Swing

o Linear Regulator Controller for Gate-Off Supply

o Thermal-Overload Protection

o 32-Pin, 5mm x 5mm, Thin QFN Package

Simplified Operating Circuit

VVGL

VIN

VGHON

VMAIN

VLOGIC

VGHON

SYSTEM

VVGL

DRVN IN

FBN

VGL

REF CONTROLLER

ENA

LDOADJ

STEP-UP

CONTROLLER

LDOO

LINEAR

REGULATOR

VDET

CD

MAX17103

AUO-P1721.14

LX

PGND

FB

COMP

SS

AGND

OPAS

VOLTAGE

OP

OUT

DETECTOR

RST

GHON

CK

CS

XCK

ST

SCAN

DRIVER

LOGIC

POS

CKH

QS

XCKH

STH

To VCOM

BACKPLANE

PANEL

VGLC

VGHON

GD

VGL

Pin Configuration appears at end of data sheet.

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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