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TPS60250 - High Efficiency Charge Pump

Description

The TPS60250/2 are high efficiency, constant frequency charge pump DC/DC converters that use dual mode 1× and 1.5× conversions to maximize efficiency over the input voltage range.

Features

  • 1.
  • 3.0 V to 6.0 V Input Voltage Range.
  • ×1 and ×1.5 Charge Pump.
  • Fully Programmable Current with I2C.
  • 64 Dimming Steps with 25mA Maximum (Sub and Main Display Banks).
  • 4 Dimming Steps with 80mA Maximum (DM5 for Auxiliary.

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Full PDF Text Transcription

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TPS60250 TPS60252 www.ti.com............................................................................................................................................................ SLVS769C – APRIL 2007 – REVISED APRIL 2008 HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I2C INTERFACE FEATURES 1 • 3.0 V to 6.0 V Input Voltage Range • ×1 and ×1.5 Charge Pump • Fully Programmable Current with I2C – 64 Dimming Steps with 25mA Maximum (Sub and Main Display Banks) – 4 Dimming Steps with 80mA Maximum (DM5 for Auxiliary Application) • 2% Current Matching for Sub LEDs at Light Load Condition (Each 100µA) • 750 kHz Charge Pump Frequency • Continuous 230mA Maximum Output Current • Auto Switching Between ×1 and ×1.
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