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Copyright © 2011 Active-Semi, Inc.

ACT6311

White LED/OLED Step-Up Converter

Efficiency vs. Output Current

Output Current (mA)

VIN = 3.6V

VIN = 3V

FEATURES

APPLICATIONS

GENERAL DESCRIPTION

The

ACT6311

step-up

DC/DC

converter

is

optimized for driving OLEDs or white LEDs. It can

provide an output voltage up to 24V. The device is

capable of driving up to seven LEDs in series from a

Lithium-Ion battery, with inherent current matching

and uniform brightness.

The ACT6311 incorporates a 30V high voltage

switch. The device operates at 1MHz and allows the

use of few external components. The ACT6311 is

available in the tiny SOT23-5 package.

0

20

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100

0

5

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15

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25

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35

Figure 1. Typical Application Circuit

Rev 3, 22-Feb-11