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400 mA nano-quiescent synchronous step-down converter with digital voltage selection and Power Good

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1 - 9$2.150%
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In stock
Parameter NameParameter Value
Input Voltage Min Volt0.625
Input Voltage Max Volt5.5
Packing TypeTape And Reel
RoHs compliantEcopack2
Package NameCSP P 0.4 mm

This converter is specifically designed for applications where high efficiency, PCB size and thickness are the key factors. The output voltage can be set using two digital control inputs, a VOUT from 0.625 V to 3.3 V can be dynamically selected. Thanks to the enhanced PCC (peak current control) the ST1PS01 reaches very high efficiency conversion using just a 2.2 µH inductor and two small capacitors. Advanced design circuitry is implemented to minimize the quiescent current. The device is available in Flip-Chip package.

Key features
  • 500 nA input quiescent current at VIN=3.6 V (not switching)
  • 94% typical efficiency at 1 mA load (VIN=3.6 V, VOUT=3.3 V)
  • 100% duty cycle
  • 1.8 V to 5.5 V input operating range
  • Undervoltage lockout: 1.57 V (VIN falling, typ.)
  • Up to 400 mA output current capability
  • Low power control operation for the best efficiency
  • Embedded soft-start circuit
  • Tiny external components: L=2.2 µH typ.
  • Selectable output voltages: 0.625 V to 3.3 V
  • Output voltage Power Good
  • ±1.5% output voltage accuracy (VOUT, TA = 25 °C)
  • Dynamic output voltage selection (D0, D1)
  • Available in Flip-Chip package
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