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LTC3544B - Quad Synchronous Step-Down Regulator

Description

The LTC®3544B is a quad, high efficiency, monolithic synchronous buck regulator using a constant frequency, current mode architecture.

The four regulators operate independently with separate run pins.

Features

  • High Efficiency: Up to 95%.
  • Four Independent Regulators Provide Up to 300mA, 200mA, 200mA and 100mA Output Current.
  • 2.25V to 5.5V Input Voltage Range.
  • 2.25MHz Constant Frequency Operation.
  • No Schottky Diodes Required.
  • Low Dropout Operation: 100% Duty Cycle.
  • Pulse Skipping at Low Load for Minimum Ripple.
  • 0.8V Reference Allows Low Output Voltages.
  • Shutdown Mode Draws.

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Full PDF Text Transcription

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LTC3544B Quad Synchronous Step-Down Regulator: 2.25MHz, 300mA, 200mA, 200mA, 100mA Features ■ High Efficiency: Up to 95% ■ Four Independent Regulators Provide Up to 300mA, 200mA, 200mA and 100mA Output Current ■ 2.25V to 5.5V Input Voltage Range ■ 2.25MHz Constant Frequency Operation ■ No Schottky Diodes Required ■ Low Dropout Operation: 100% Duty Cycle ■ Pulse Skipping at Low Load for Minimum Ripple ■ 0.
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