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Date: 5/25/04

SP6691 Micro Power Boost Regualtor, Series White LED Driver

© Copyright 2004 Sipex Corporation5

SP6691

FEATURES

■ Drives up to 6 LED's @ 25mA

■ Drives up to 8 LED's @ 20mA

■ High Output Voltage: Up to 34V

■ Optimized for Single Supply,

2.7V - 4.2V Applications

■ Operates Down to 1V

■ High Efficiency: Greater Than 75%

■ Low Quiescent Current: 20µA

■ Ultra Low Shutdown Current: 10nA

■ Single Battery Cell Operation

■ Programmable Output Voltage

■ 1Ω switch (350mV at 350mA)

■ Available in 8 Pin DFN, 5 Pin TSOT or

5 Pin SOT23

Micro Power Boost Regulator

Series White LED Driver

APPLICATIONS

■ White LED Driver

■ High Voltage Bias

■ Digital Cameras

■ Cell Phone

■ Battery Backup

■ Handheld Computers

DESCRIPTION

The SP6691 is a micro power boost regulator that is specifically designed for powering series

configuration white LED. The part utilizes fixed off time architecture and consumes only 10nA

quiescent current in shutdown. Low voltage operation, down to 1V, fully utilizes maximal battery

life. The SP6691 is offered in a 8 Pin DFN, 5-pin SOT-23 or 5 Pin TSOT package and enables

®

TYPICAL APPLICATION CIRCUIT

V

IN

SW

GND

SHDN

FB

10µH

2.2 µF

4.7µF

2.7 to 4.2V

®

R

b

SP6691

D1

L1

C1

C2

SP6691

8 Pin DFN

8

7

6

5

1

2

3

4

NC

FB

NC

SW

GND

NC

Now Available in Lead Free Packaging