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IS31BL3231 Datasheet FLASH LED DRIVER

Manufacturer: ISSI (now Infineon)

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General Description

The IS31BL3231 is a current-regulated charge pump and ideal for powering high brightness LEDs for camera flash and torch applications.

The charge pump can be set to regulate two current levels for FLASH and TORCH modes.

The IS31BL3231 automatically switches between linear and boost modes ensuring that LED current does not depend on the LED forward voltage.

Overview

IS31BL3231 FLASH LED DRIVER July 2015 GENERAL.

Key Features

  • Operates from 2.7V to 5.5V.
  • Up to 90% efficiency in Torch Mode.
  • Output current up to 750mA.
  • Adjustable output current in Flash Mode.
  • Minimum external components, no external inductor required.
  • Automatic boost mode.
  • Less than 1µA shutdown current.
  • Low ripple and EMI.
  • Over voltage protection on output.
  • Short and over temperature protections.
  • Available in DFN-10 (3mm × 3mm) package.

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