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TC105 - PFM/PWM Step-Down DC/DC Controller

General Description

The TC105 is a step-down (Buck) switching controller that furnishes output currents of up to 1A (max) while delivering a typical efficiency of 92%.

Key Features

  • 57A (Typ) Supply Current.
  • 1A Output Current.
  • 0.5A Shutdown Mode.
  • 300kHz Switching Frequency for Small Inductor Size.
  • Programmable Soft-Start.
  • 92% Typical Efficiency.
  • Small Package: 5-Pin SOT-23A.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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TC105 PFM/PWM Step-Down DC/DC Controller Features • 57A (Typ) Supply Current • 1A Output Current • 0.5A Shutdown Mode • 300kHz Switching Frequency for Small Inductor Size • Programmable Soft-Start • 92% Typical Efficiency • Small Package: 5-Pin SOT-23A Applications • Palmtops • Battery-Operated Systems • Portable Instruments • Positive LCD Bias Generators • Portable Communicators • Hand-Held Scanners • 5V to 3V Down Converters Device Selection Table Part Number Output Voltage (V)* Package Osc. Freq. (kHz) Operating Temp. Range TC105503ECT 5.0 5-Pin SOT-23A 300 -40C to +85C TC105333ECT 3.3 5-Pin SOT-23A 300 -40C to +85C TC105303ECT 3.0 5-Pin SOT-23A 300 -40C to +85C *Other output voltages are available. Please contact Microchip Technology Inc. for details.