LED Driver. FAN5343 Datasheet

FAN5343 Driver. Datasheet pdf. Equivalent

Part FAN5343
Description 6-LED Series Boost LED Driver
Feature FAN5343 — 6-LED Series Boost LED Driver with Integrated Schottky Diode and Single-Wire Digital Inter.
Manufacture Fairchild Semiconductor
Datasheet
Download FAN5343 Datasheet




FAN5343
August 2010
FAN5343
6-LED Series Boost LED Driver with Integrated Schottky
Diode and Single-Wire Digital Interface
Features
ƒ Asynchronous Boost Converter
VOUT up to 24V
ƒ Internal Schottky Diode
ƒ Up to 500mW Output Power
ƒ 2.7V to 5.5V Input Voltage Range
ƒ Single-Wire Digital Control Interface to Set LED
Brightness Levels
32 Linear Steps
ƒ Fixed Switching Frequency: 1.2MHz
ƒ Soft-Start Capability
ƒ Input Under-Voltage Lockout (UVLO)
ƒ Output Over-Voltage Protection (OVP)
ƒ Short-Circuit Detection
ƒ Thermal Shutdown Protection (TSD)
ƒ Small 6-Lead 2.0 x 2.0 x 0.55mm UMLP Package
Applications
ƒ Cellular Mobile Handsets
ƒ Mobile Internet Devices
ƒ Portable Media Players
ƒ PDA, DSC, MP3 Players
Description
The FAN5343 is an asynchronous constant-current LED
driver capable of efficiently delivering up to 500mW to a
string of six (6) LEDs in series. Optimized for small form
factor applications, the 1.2MHz fixed switching frequency
allows the use of small chip inductors and capacitors.
The FAN5343 uses a single-wire digital control interface to
program the brightness levels of the LEDs in 32 linear steps
by applying digital pulses.
For safety, the device features integrated over-voltage, over-
current, short circuit detection, and thermal shutdown
protection. In addition, input under-voltage lockout protection
is triggered if the battery voltage is too low.
The FAN5343 is available in a very low profile, small form
factor 2mm x 2mm x 0.55mm 6-lead UMLP package that is
green and RoHS compliant.
Ordering Information
Part Number
Temperature Range
FAN5343UMPX
-40 to 85 °C
Package
6-Lead, Ultra-Thin Molded Leadless (UMLP)
Package
Packing
Tape and Reel
© 2009 Fairchild Semiconductor Corporation
FAN5343 • Rev. 1.0.4
www.fairchildsemi.com



FAN5343
Typical Application Diagram
Block Diagram
Figure 1. Typical Application
© 2009 Fairchild Semiconductor Corporation
FAN5343 • Rev. 1.0.4
Figure 2. Block Diagram
2
www.fairchildsemi.com







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