iC-DC QFN24-4x4

Dual 3.3V/5V Boost/Buck SMPS

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Product description

iC-DC is a monolithic switching converter with two back-end linear regulators. The output voltages of the two linear regulators can be configured within a range of 1.5 to 5.5 V. The switching converter supplies up to 300 mA.

The high efficiency of the buck/boost converter for an input voltage range of +4 V to +36 V makes iC-DC suitable for industrial applications. Using very few external components, a DC/DC power pack can be created with a stabilized supply voltage and minimum power dissipation.


  • Wide input voltage range of +4 V to +36 V
  • Two back-end, adjustable linear regulators (1.5 V to 5.5 V) with a total of up to 300 mA of output current and a separate output voltage monitor
  • Reverse polarity protection up to -36 V with autarky function
  • Universal buck/boost converter with high efficiency
  • Low residual ripple with small capacitors in the μF range
  • Separate enable inputs for the linear regulators
  • Two switched linear regulator outputs
  • Integrated switching transistors and flyback diodes
  • Converter cut-off current can be set by an external resistor
  • Integrated 3 MHz oscillator with no external components
  • Active noise spectrum reduction
  • Error messaging with overtemperature, overvoltage, and undervoltage at the current-limited open-collector output
  • Wide temperature range of -40 °C to 105 °C
  • Protective circuitry against ESD
  • Space saving 24-pin QFN package


  • Dual voltage supply by buck/boost converters with adjustable, back-end linear regulators
  • Power management for laser, encoder, and automotive applications
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