MAX1514 Maxim Integrated Products, MAX1514 Datasheet

MAX1514

Manufacturer Part Number

MAX1514

Description

(MAX1513 / MAX1514) TFT-LCD Power-Supply Controllers

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX1514.pdf (28 pages)

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Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX1514EUA

Manufacturer:

MAXIM/美信

Quantity:

20 000

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The MAX1513/MAX1514 provide complete power-sup-

ply solutions for active-matrix thin-film transistor (TFT)

liquid-crystal displays (LCDs). Both devices include a

high-performance step-up regulator controller, three lin-

ear-regulator controllers, and an adjustable delay block

for startup sequencing. The MAX1513 includes an

additional linear-regulator controller and a high-perfor-

mance buffer amplifier. The MAX1513/MAX1514 can

operate from 2.7V to 5.5V input supplies and provide

overload protection with timer delay latch on all the reg-

ulated outputs.

The step-up regulator controller drives an external N-

channel MOSFET to generate the regulated supply volt-

age for the panel source-driver ICs. Its current-mode

control architecture provides fast transient response to

pulsed loads. The high switching frequency (up to

1.5MHz) allows the use of ultra-small inductors and

ceramic capacitors while achieving efficiencies over 85%

using lossless current sensing. The internal soft-start lim-

its the input surge current during startup.

The gate-on and gate-off linear-regulator controllers of

the MAX1513/MAX1514 provide regulated TFT gate-on

and gate-off supplies. The gate-on supply is activated

after an adjustable delay following the step-up regulator.

The logic linear-regulator controller can be used to cre-

ate a low-voltage logic supply. The gamma linear-regula-

tor controller of the MAX1513 can be used to generate a

gamma-correction reference supply or another general-

purpose supply rail. The MAX1513’s high-performance

buffer amplifier can drive the LCD backplane (VCOM)

or the gamma-correction divider string.

The MAX1513/MAX1514 are available in 4mm

20-pin thin QFN packages with a maximum thickness of

0.8mm, suitable for ultra-thin LCD panel design.

19-3047; Rev 0; 10/03

Pin Configuration appears at end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Notebook Computer Displays

LCD Monitors and TVs

Automotive Displays

________________________________________________________________ Maxim Integrated Products

General Description

TFT-LCD Power-Supply Controllers

Applications

DataSheet4U.com

4mm

♦ 2.7V to 5.5V Input Supply Range

♦ Input-Supply Undervoltage Lockout

♦ Current-Mode Step-Up Controller

♦ Linear-Regulator Controllers for V

♦ Linear-Regulator Controller for Logic Supply

♦ High-Performance Buffer Amplifier (MAX1513 Only)

♦ Additional Linear-Regulator Controller

♦ Power-Up Sequence and V

♦ V

♦ Timer-Delay Fault Latch for All Outputs

♦ Thermal-Overload Protection

MAX1513ETP

MAX1514ETP

(MAX1513 Only)

MAIN

Fast Transient Response to Pulsed Load

High Efficiency

Lossless Current Sensing

430kHz/750kHz/1.5MHz Switching Frequency

PART

, V

LOGIC

GAMMA

GON

TO VCOM

Minimal Operating Circuit

, V

-40°C to +85°C

TEMP RANGE

GOFF

SDFR

DEL

DRVL

FBL

DRVG

FBG

SUPB

FBPB

OUTB

MAX1513

MAX1514

Ordering Information

, V

DRVP

DRVN

GATE

GND

CS+

CS-

FBP

FBN

REF

GAMMA

GON

PIN-PACKAGE

20 Thin QFN 4mm x 4mm

Shutdown Control

Delay Control

GON

GOFF

Features

, V

GOFF

MAIN

DataShee

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