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Linear LED Drivers | FAN5343

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

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Overview

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, 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 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.

  • TBA
  • Asynchronous Boost Converter
  • VOUT up to 24 V
  • Internal Schottky Diode
  • Up to 500 mW Output Power
  • 2.7 V to 5.5 V Input Voltage Range
  • Single-Wire Digital Control Interface to Set LED Brightness Levels
  • 32 Linear Steps
  • Fixed Switching Frequency: 1.2 MHz
  • Soft-Start Capability
  • Input Under-Voltage Lockout (UVLO)
  • Output Over-Voltage Protection (OVP)
  • Short-Circuit Detection
  • Thermal Shutdown Protection (TSD)

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FAN5343UMPX

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Obsolete

CAD Model

Pb

A

H

P

UDFN-6

517DS

1

260

REEL

3000

N

5.5

500

6

1

Price N/A

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