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TPS60255 - HIGH EFFICIENCY CHARGE PUMP

Description

The TPS60255 is a high-efficiency, constant frequency charge pump DC/DC converter that uses 1× and 1.5× conversion to maximize efficiency for the input voltage range.

Features

  • 1.
  • 2 2.7 V to 6.0 V Input Voltage Range.
  • 1× and 1.5× Charge Pump.
  • Auto Switching Between 1× and 1.5× Modes.
  • 750 kHz Charge Pump Frequency.
  • Seven Individually-regulated WLED Current Sinks.
  • Single- Wire Interface for Dimming and ON/OFF Control.
  • 25 mA max LED Current for Six Current Sinks.
  • One 80 mA Current Sink.
  • Open WLED Detection.
  • Built-in Soft Start and Current Limit.
  • 16-pin, 3 mm × 3 mm QFN Packag.

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Full PDF Text Transcription

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TPS60255 www.ti.com SLVS825 – MARCH 2008 HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs DRIVER WITH 1 WIRE INTERFACE FEATURES 1 •2 2.7 V to 6.0 V Input Voltage Range • 1× and 1.5× Charge Pump • Auto Switching Between 1× and 1.5× Modes • 750 kHz Charge Pump Frequency • Seven Individually-regulated WLED Current Sinks • Single- Wire Interface for Dimming and ON/OFF Control • 25 mA max LED Current for Six Current Sinks • One 80 mA Current Sink • Open WLED Detection • Built-in Soft Start and Current Limit • 16-pin, 3 mm × 3 mm QFN Package APPLICATIONS • Cellular Phones • Portable Navigation Displays • Multi-display Handheld Devices DESCRIPTION The TPS60255 is a high-efficiency, constant frequency charge pump DC/DC converter that uses 1× and 1.
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