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SP6691EK1-L/TR

Description
DC/DC switching controller
Categorysemiconductor    Other integrated circuit (IC)   
File Size721KB,15 Pages
ManufacturerExar [Exar Corporation]
Environmental Compliance
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SP6691EK1-L/TR Overview

DC/DC switching controller

SP6691
Micro Power Boost Regulator Series White LED Driver
FEATURES
Drives up to 6 LEDs @ 25mA
Drives up to 8 LEDs @ 20mA
High Output Voltage: Up to 30V
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
1 switch (350mV at 350mA)
Lead Free, RoHS Compliant Packages:
8 Pin DFN, 5 Pin TSOT or 5 Pin SOT23
NC
FB
NC
SW
1
2
3
4
8
NC
SHDN
V
IN
GND
SP6691
8 Pin DFN
7
6
5
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
the construction of a complete regulator occupying < 0.2 in
2
board space.
TYPICAL APPLICATION CIRCUIT
10µH
2.7 to 4.2V
L1
D1
SW
V
IN
SP6691
SHDN
C2
FB
2.2
µF
4.7µF
C1
GND
R
b
Apr08-08 Rev E
Micro Power Boost Regulator Series White LED Driver
© 2008 Exar Corporation
1

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