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UC3656 - 800mA SYNCHRONOUS BUCK CONTROLLER

General Description

The UTC UC3656 is a synchronous buck converter for a DC/DC converter optimized for high-performance microprocessor applications.

It is configured with current mode for excellent line and load transient response.

Key Features

  • S.
  • High Efficiency.
  • Input Voltage Range: 2.5V ~ 5.5V.
  • Schottky Diode is Saved.
  • Output Current: 1000mA (@5V Input 3.3V Output).
  • 1.6MHz Oscillation Frequency.
  • Internal ON/OFF.
  • 100% Duty Cycle Allows Low Dropout Operation.
  • Stand-by Current: 1μA (Max. ).

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UNISONIC TECHNOLOGIES CO., LTD UC3656 1.6MHz, 1A SYNCHRONOUS BUCK CONVERTER  DESCRIPTION The UTC UC3656 is a synchronous buck converter for a DC/DC converter optimized for high-performance microprocessor applications. It is configured with current mode for excellent line and load transient response. At 1.6MHz operation frequency, the use of small surface mount inductor and capacitor is enabled. The built-in synchronous switch saves the use of an external Schottky diode and increases efficiency. The UTC UC3656 is a low-noise synchronous step-down DC/DC converter that is ideally suited for systems requiring supplies from a 1-cell Li-ion battery or from a 3-cell to 4-cell NiCd, NiMH, or alkaline battery.