LED Driver, Series Boost, with Integrated Schottky Diode and Single-wire Digital Interface

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Overview

The FAN5341 is an asynchronous constant-current LED driver capable of efficiently delivering up to 500mW to a string of up to five LEDs in series. Optimized for small formfactor applications, the 1.2MHz fixed switching frequency allows the use of small chip inductors and capacitors.
The FAN5341 uses a simple 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, overcurrent, short-circuit detection, and thermal-shutdown protection. In addition, input under-voltage lockout protection is triggered if the battery voltage is too low.
The FAN5341 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.

  • TBA
  • Asynchronous Boost Converter
  • Internal Schottky Diode
  • Up to 500 mW Output Power
  • Drives 3 to 5 LEDs in Series
  • 2.7 V to 5.5 V Input Voltage Range
  • Single-Wire Digital Control Interface to Set LED Brightness Levels
  • 32 Linear Steps
  • 1.2 MHz Fixed Switching Frequency
  • Soft-Start Capability
  • Input Under-Voltage Lockout (UVLO)
  • Output Over-Voltage Protection (OVP)
  • Short-Circuit Detection
  • Thermal Shutdown (TSD) Protection

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FAN5341UMPX

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CAD Model

Pb

A

H

P

UDFN-6

1

260

REEL

3000

N

5.5

500

5

1

$0.5237

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