MP1026

CCFL Driver

For Handheld Display Applications

MP1026 Rev. 1.6w

www.MonolithicPower.com

1

8/25/2005

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2005 MPS. All Rights Reserved.

The Future of Analog IC Technology

TM

TM

DESCRIPTION

The MP1026 is a Power IC that offers a

complete solution for driving a Cold Cathode

Fluorescent Lamp (CCFL). This Power IC

converts unregulated DC voltage to a nearly

pure sine wave required to ignite and operate

the CCFL.

The

MP1026

greatly

increases

power

conversion efficiency and supports both analog

and burst mode dimming, simplifying the module

implementation.

The

MP1026

offers

the

following distinct performance advantages:

• More light for less power

• Small board implementation

• Low RF emission

• Low external components cost

The MP1026 is suitable for 2-Cell Li-Ion battery

applications using 5V, 9V, or 12V adapters as

the power source.

FEATURES

• 4.5V to 14V Power Input (V

• Increase Transformer Reliability

• Open Lamp Timer and Regulation

• Current and Voltage Feedback Control

• Logic Level Burst Mode Control

• Supports Open/Short Lamp Protection

• Soft-Start

• Outputs are Short Circuit Protected

• Allows Burst-Mode Operation

• Improved Line Transient Response

• Tightened Lamp Current Accuracy

APPLICATIONS

• Portable DVD Players

• PDAs

• Camcorders

• Digital Cameras

“MPS” and “Monolithic Power Systems” are Trademarks of Monolithic

Power Systems, Inc.

The MP1026 is covered by US Patents 6,316,881 and 6,114,814.

TYPICAL APPLICATION

Rlfb

Cs1

T1

Cs2

Cisb

Csfb

Rsfb

Risb

Cp

Rdamp

MP1026

CbtR

Rbosc

Rs

CbtL

IN4148 or BAT54

Rbleed

Rdbr

DBrt

En

ABrt

Cba

Gnd

F1

MP1026_TAC_S01