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STMICROELECTRONICS PM8903ATR High Efficiency Step-Down Regulator

The PM8903A is a high efficiency monolithic step-down switching regulator capable of delivering up to 3 A continuous current from a 2.8 V to 6 V input voltage. It features integrated low R_on MOSFETs, adjustable output down to 0.6 V, 1% voltage accuracy, and a switching frequency of approximately 1.1 MHz with programmable options. The device offers comprehensive protection including over/under voltage, overcurrent, and overtemperature protection, along with a Power Good output for real-time status. Its compact VFQFPN16 package and light load efficiency enhancements make it ideal for high-performance power supply applications in CPUs, DSPs, FPGAs, and distributed systems.

Authorized Distributors
Source:Newark
Part No:PM8903ATR
Stock:3384
Inv Date:06-11-2026
Price: Unit price: $1.99
Buy/RFQ:
Part No:PM8903ATR
Stock:0
Inv Date:06-12-2026
Price: Unit price: $1.68
Buy/RFQ:

STMICROELECTRONICS PM8903ATR High Efficiency Step-Down Regulator Specifications:

  • Input Voltage Range: 2.8 V to 6 V
  • Output Voltage Range: 0.6 V to near input voltage
  • Continuous Output Current: 3 A
  • Switching Frequency: 1.1 MHz (programmable to 0.8 MHz or 1.0 MHz)
  • Integrated MOSFETs: Low R_on, 85 mΩ
  • Output Voltage Accuracy: ±1%
  • Protection Features: Over/Undervoltage, Overcurrent, Overtemperature
  • Package: VFQFPN16 (3 x 3 mm)
  • Response Time: Fast transient response with high bandwidth error amplifier
  • Operating Temperature Range: -40°C to 125°C junction temperature
  • Power Good Output: Open drain for monitoring output regulation
  • Design includes adaptive deadtime control and pulse-skipping mode for efficiency

Buy the STMicroelectronics PM8903A – Reliable Switching Regulator for Industrial Applications

Order the STMicroelectronics PM8903A online today and enhance your power supply solutions with a highly efficient, protected, and compact step-down regulator. Designed for demanding industrial applications, it delivers up to 3 A of continuous current with adjustable output levels down to 0.6 V. Its integrated MOSFETs ensure low R_on and high efficiency. Featuring extensive protections including over/under voltage, overcurrent, and overtemperature safeguards, the PM8903A also offers a Power Good indicator for real-time voltage monitoring. Its small VFQFPN16 package makes it ideal for space-constrained designs, providing reliable performance in CPUs, FPGAs, and distributed power systems.

Buy STMicroelectronics PM8903A now and experience unmatched reliability and high efficiency in your power management design.

Frequently Asked Questions

Where can I buy STMICROELECTRONICS PM8903ATR?

You can click on the BUY or RFQ button to purchase PM8903ATR from an authorized STMICROELECTRONICS distributor.

How do I troubleshoot issues or seek technical support for part PM8903ATR?

You can download the PM8903ATR datasheet or visit the STMICROELECTRONICS website for support.

Who is the manufacturer of PM8903ATR?

STMICROELECTRONICS

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