CT21302 is high efficiency DCDC buck converter designed work with supply voltage between 1.62V and 1.98V. The converter is optimized for current load up to 100mA and 0.95V to 1.3V selectable output voltage (50mV of step).

Regulation is performed fixed frequency voltage mode PWM technique. The cell features integrated high side and low side switches and type III compensated error amplifier: only one inductor and capacitor are needed to close the loop.

Burst mode is available to reduce the quiescent current at light load.


  • Input Voltage Range: 1.62V to 1.98V
  • 120mA of Load Current
  • 0.95V to 1.3V Selectable Output (50mV of Step)
  • Voltage regulation performed according fixed 600KHz frequency voltage mode PWM technique or burst mode at light load
  • 150uA of quiescent current @ 100uA of load in burst mode
  • 5mV ripple with 10uF X5R ceramic capacitor
  • 92% of efficiency @ 100mA


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