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LM3639A - Single Chip 40V Backlight + 1.5A Flash LED Driver

Description

The LM3639A is a single-chip white LED Camera Flash Driver + LCD Display Backlight Driver.

The lowvoltage, high-current flash LED driver is a synchronous boost which provides the power for a single flash LED at up to 1.5A or dual LEDs at up to 750 mA each.

Features

  • 1.
  • 2 Single Chip White LED Flash and Backlight Driver.
  • 1.5A Flash LED Current.
  • Dual String Backlight Control (40V Max VOUT).
  • 128 Level Exponential and Linear Brightness Control.
  • PWM Input for CABC.
  • Programmable Over-Voltage Protection (Backlight).
  • Programmable Current Limit (Flash).
  • Programmable Switching Frequency.
  • Optimized Flash Current During Low-Battery Conditions.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LM3639A www.ti.com SNVS964 – MARCH 2013 LM3639A Single Chip 40V Backlight + 1.5A Flash LED Driver Check for Samples: LM3639A FEATURES 1 •2 Single Chip White LED Flash and Backlight Driver • 1.5A Flash LED Current • Dual String Backlight Control (40V Max VOUT) • 128 Level Exponential and Linear Brightness Control • PWM Input for CABC • Programmable Over-Voltage Protection (Backlight) • Programmable Current Limit (Flash) • Programmable Switching Frequency • Optimized Flash Current During Low-Battery Conditions APPLICATIONS • White LED Backlit Display Power • White LED Camera Flash Power L(B) Schottky L(F) VOUTB up to 40V COUTB 2.5V - 5.
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