ADP3041 Analog Devices, ADP3041 Datasheet

ADP3041

Manufacturer Part Number

ADP3041

Description

TFT LCD Panel Power Module

Manufacturer

Analog Devices

Datasheet

1.ADP3041.pdf (16 pages)

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GENERAL DESCRIPTION

The ADP3041 is a fixed frequency, PWM step-up dc-to-dc

switching regulator with five buffers capable of 12 V boosted

output voltage in a TSSOP 20-lead package. It provides high

efficiency, low noise operation, and excellent dynamic response,

and is easy to use. The high switching frequency allows for small,

cost-saving, external inductive and capacitive components. The

ADP3041 operates in PWM current mode. The current limit

and the power switch are integrated completely on-chip.

Capable of operating from 2.5 V to 5.5 V input, the ADP3041

is ideal for thin-film transistor (TFT) liquid crystal display

(LCD) module applications, where local point-of-use power

regulation is required. Supporting output voltages down to 4.5 V,

the ADP3041 is ideal to generate today’s low voltage rails, pro-

viding the optimal solution in its class for delivering power

efficiently, responsively, and simply with minimal printed circuit

board area.

The ADP3041 integrates five buffers. Each buffer can deliver

35 mA output current and has rail-to-rail input and output

capability.

REV. D

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties that

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

FEATURES

600 kHz PWM Frequency

Fully Integrated 1.5 A Power Switch

3% Output Regulation Accuracy

Simple Compensation

Small Inductor and MLC Capacitors

300 A Quiescent Supply Current

90% Efficiency

Undervoltage Lockout

5 Buffers

TSSOP 20-Lead Package

Pb-Free Part

APPLICATIONS

TFT LCD Bias Supplies

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

AVCC

VCMI

G1I

G2I

G3I

G4I

TFT LCD Panel Power Module

REF

RAMP

SOFT START

GEN

OSC

FUNCTIONAL BLOCK DIAGRAM

g m

ERROR

AMP

COMP

COMPARATOR

AGND

F/F

BIAS

ADP3041

AMPLIFIER

CURRENT

SENSE

DRIVER

ADP3041

www.analog.com

PGND

VCMO

G1O

G2O

G3O

G4O

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