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TPS60251 - HIGH EFFICIENCY CHARGE PUMP

General Description

The TPS60251 is a high efficiency, constant frequency charge pump DC/DC converter that uses a dual mode 1× and 1.5× conversion to maximize efficiency over the input voltage range.

Key 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 for TPS60251 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for TPS60251. For precise diagrams, and layout, please refer to the original PDF.

TPS60251 www.ti.com SLVS767C – APRIL 2007 – REVISED NOVEMBER 2007 HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I2C INTERFACE FEATURES 1 • 3.0-V to 6.0-V Input Voltage Ran...

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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 230-mA Maximum Output Current • Auto Switching Between ×1 and ×1.

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