ST1PS01   Product is in volume production.

400mA Nano-Quiescent Synchronous step-down converter with digital voltage selection and power good

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The ST1PS01 is a nano-quiescent miniaturized synchronous step-down converter, which is able to provide up to 400 mA output current with an input voltage ranging from 1.8 V to 5.5 V. 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 1.8 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: 1.8 V to 3.3 V
  • Output voltage Power Good
  • ±1.5% output voltage accuracy (VOUT, TA=25 °C)
  • Dynamic voltage selection (D0, D1)
  • Available in Flip-Chip package

Resources

Technical Documentation

Product Specifications
Description Version Size
DS12799 DS12799: 400 mA nano-quiescent synchronous step-down converter with digital voltage selection and Power Good 2.0 2 MB

Publications and Collaterals

Flyers
Description Version Size
DC-DC converters 400 mA, nano-quiescent current synchronous step-down converter 1.0 215 KB
Brochures
Description Version Size
Brochure Power management guide 10.2018 4 MB
Electric vehicle (EV) ecosystem 1.1 1 MB
Switching Converters (DC-DC) – Quick Reference Guide 1.0 481 KB

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Sample & Buy

Part Number Package Packing Type Marketing Status Unit Price (US$) * Quantity ECCN (US) Country of Origin More info Order from ST Order from Distributors
ST1PS01AJR Chip Scale Package 0.4mm pitch Tape And Reel Active - - EAR99 - MORE INFO No availability reported, please contact our Sales office
ST1PS01DJR Chip Scale Package 0.4mm pitch Tape And Reel Active - - EAR99 - MORE INFO No availability reported, please contact our Sales office
ST1PS01EJR Chip Scale Package 0.4mm pitch Tape And Reel Active 0.686 1000 EAR99 - MORE INFO Free Sample Add to cart DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST1PS01AJR ActiveChip Scale Package 0.4mm pitchIndustrialEcopack2
ST1PS01DJR ActiveChip Scale Package 0.4mm pitchIndustrialEcopack2
ST1PS01EJR ActiveChip Scale Package 0.4mm pitchIndustrialEcopack2 0 0
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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