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UD05209 - SYNCHRONOUS STEP-DOWN CONVERTER

General Description

UTC UD05209 devices are synchronous step-down converters optimized for small solution size and high efficiency.

The devices integrate switches capable of delivering an output current up to 2A.

The devices are based on an adaptive on time with valley current mode control scheme.

Key Features

  • 2.7V to 5.5V Input Voltage Range.
  • 1.5MHz Typical Switching Frequency.
  • Output Current up to 2A.
  • Adaptive On-Time Current Control.
  • Over Current Protection.
  • Internal Soft Startup of 250μs (Typ. ).
  • Adjustable Output Voltage.
  • Thermal Shutdown Protection.

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Full PDF Text Transcription (Reference)

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UNISONIC TECHNOLOGIES CO., LTD UD05209 Preliminary CMOS IC 1.5MHz, 2A, VFB=0.6V SYNCHRONOUS STEP-DOWN CONVERTER  DESCRIPTION 4 5 UTC UD05209 devices are synchronous step-down converters optimized for small solution size and high efficiency. The devices integrate switches capable of delivering an output current up to 2A. The devices are based on an adaptive on time with valley current mode control scheme. Typical operating frequency is 1.5 MHz at medium to heavy loads. The devices are optimized to achieve very low output voltage ripple even with small external components and feature an excellent load transient response. In shutdown, the current consumption is reduced to 1μA. The UD05209 provide an adjustable output voltage via an external resistor divider.