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LTC3203 - 500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps

Features

  • Selectable Dual Mode Operation: 1:1.5 or 1:2.
  • High Output Current: Up to 500mA.
  • Low Noise Constant Frequency (1MHz/0.9MHz) Operation.
  • VIN Range: 2.7V to 5.5V.
  • Adjustable Output Voltage (LTC3203/LTC3203B).
  • User Selectable Fixed Output Voltages: 4.5V or 5V (LTC3203-1 and LTC3203B-1).
  • Burst Mode® Operation with IQ ~ 120µA (LTC3203/LTC3203-1).
  • Constant Freqency Operation at All Loads (LTC3203B/LTC3203B-1).
  • Soft-Start Limits Inrush Current at Turn-On.

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Full PDF Text Transcription

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U U FEATURES ■ Selectable Dual Mode Operation: 1:1.5 or 1:2 ■ High Output Current: Up to 500mA ■ Low Noise Constant Frequency (1MHz/0.9MHz) Operation* ■ VIN Range: 2.7V to 5.5V ■ Adjustable Output Voltage (LTC3203/LTC3203B) ■ User Selectable Fixed Output Voltages: 4.5V or 5V (LTC3203-1 and LTC3203B-1) ■ Burst Mode® Operation with IQ ~ 120µA (LTC3203/LTC3203-1) ■ Constant Freqency Operation at All Loads (LTC3203B/LTC3203B-1) ■ Soft-Start Limits Inrush Current at Turn-On ■ Short-Circuit/Thermal Protection ■ Shutdown Disconnects Load from Input ■ Shutdown Current: < 1µA ■ Available in a 10-pin (3mm × 3mm) DFN Package U APPLICATIO S ■ High Current LED Backlight Supply for Cellphones/PDAs ■ Cellphone Camera Light Supply ■ General Purpose 3.
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