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STMICROELECTRONICS ST1PS01CJR Miniature High-Efficiency Step-Down Converter

The ST1PS01 is a miniature, ultra-low quiescent current synchronous step-down converter designed for compact, high-efficiency power management in portable and wearable devices. Capable of delivering up to 400 mA with input voltages from 1.8 V to 5.5 V, its compact Flip-Chip 8 package (1.14x1.44 mm) makes it ideal for space-constrained applications like smart watches, IoT sensors, and energy harvesting systems. Features include digital voltage selection, high efficiency, seamless transition between PFM and PWM modes, embedded soft-start, ultra-low quiescent current, and output voltage Power Good indicator, suited for low power portable electronics.

Authorized Distributors
Source:DigiKey
Part No:ST1PS01CJR
Stock:5000
Inv Date:06-11-2026
Price: Unit price: $1.69
Buy/RFQ:
Part No:ST1PS01CJR
Stock:170
Inv Date:06-12-2026
Price: Unit price: $1.42
Buy/RFQ:
Part No:ST1PS01CJR
Stock:500
Inv Date:06-11-2026
Price: Unit price: $0.675
Buy/RFQ:
Part No:ST1PS01CJR
Stock:300
Inv Date:06-12-2026
Price: N/A
Buy/RFQ:

STMICROELECTRONICS ST1PS01CJR Miniature High-Efficiency Step-Down Converter Specifications:

  • Input Voltage Range: 1.8 V to 5.5 V
  • Output Current Capacity: Up to 400 mA
  • Output Voltage: 0.625 V to 3.3 V, digitally selectable
  • Input Quiescent Current: 500 nA at Vin=3.6 V
  • Efficiency: 94% at 1 mA load, typical
  • Switching Frequency: up to 2 MHz in PWM mode
  • Protection: UVLO at 1.63 V, seamless transition between modes
  • Package: Flip-Chip 8 (1.14x1.44 mm)
  • External Components: 2.2 µH inductor, low ESR capacitors
  • Power Good Output: Open drain, indicates proper output voltage regulation
  • Thermal Resistance: Junction to ambient unknown, designed for low power dissipation
  • Operating Temp: -40°C to 85°C
  • Storage Temp: -55°C to 150°C

Buy the Buy STMicroelectronics ST1PS01CJR Part Number ST1PS01CJR Online

Enhance your electronic projects with the STMicroelectronics ST1PS01CJR, a compact, ultra-low quiescent current synchronous buck converter. Designed for space-constrained applications, this high-efficiency regulator features a digital voltage control, adjustable output from 0.625 V to 3.3 V, and a small Flip-Chip package for easy integration. It supports up to 400 mA output current, ideal for wearables, IoT sensors, and energy harvesting devices. Easy to order online, it guarantees excellent performance and low power consumption for your critical applications.

Order your STMicroelectronics ST1PS01CJR low quiescent current buck converter today and ensure your portable device delivers reliable, efficient power.

Frequently Asked Questions

Where can I buy STMICROELECTRONICS ST1PS01CJR?

You can click on the BUY or RFQ button to purchase ST1PS01CJR from an authorized STMICROELECTRONICS distributor.

How do I troubleshoot issues or seek technical support for part ST1PS01CJR?

You can download the ST1PS01CJR datasheet or visit the STMICROELECTRONICS website for support.

Who is the manufacturer of ST1PS01CJR?

STMICROELECTRONICS

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