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PM8903 The STMicroelectronics PM8903 is a high-efficiency, monolithic step-down switching regulator designed to deliver up to 3A continuous current. It operates from a 2.8V to 6V input voltage.
Mfr Part #:

PM8903

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics PM8903 is a high-efficiency, monolithic step-down switching regulator designed to deliver up to 3A continuous current. It operates from a 2.8V to 6V input voltage.
✓ Total Stock: 2,266 pcs
$ Price Range: $1.08

PM8903 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Smaxon Electronics ✓
Non-Authorised Inventory information
2,266 pcs
On Request
2266 pcs On Request 1 On Request On Request 1101+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

PM8903 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Frequency
Function
Lead Style
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Current
Output Type
Output Voltage
Quiescent Current
SVHC Present
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage
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PM8903 Description

Short technical summary and product information.

The PM8903 from STMicroelectronics is a monolithic step-down switching regulator capable of delivering up to 3A of continuous output current. It is designed for high efficiency and operates within an input voltage range of 2.8V to 6V. The regulator features an adjustable output voltage down to 0.6V with 1% accuracy.

 

With a switching frequency of 1.1MHz, the PM8903 utilizes integrated 35 mΩ MOSFETs for optimal performance. It includes features such as PSKIP mode for light load efficiency, embedded bootstrap diode, and thermally compensated current sense. Protection features include OV/UV/OC and overtemperature protection, along with internal soft-start and soft-stop.

 

The device is housed in a compact 16-VFQFPN 3x3 mm package, suitable for surface mounting. Its applications include subsystem power supplies, CPU, DSP, and FPGA power supplies, distributed power supplies, and general DC-DC conversion.

 

Key electrical specifications include a minimum input voltage of 2.8V and a maximum of 6V, with a maximum output current of 3A. The operating temperature range is -25°C to 125°C (TJ).

PM8903 Quick Information

Product Type: DC/DC Switching Regulator
Canonical Name: PM8903 Step-Down Monolithic Switching Regulator
Subcategory: Switching Regulator

PM8903 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

PM8903 Estimated Pricing

Qty Low High
1+ $1.08 $1.08

Estimated market price range - modelled values for guidance only, not live distributor offers.

PM8903 Features

  • 3A continuous output current capability.
  • Adjustable output voltage down to 0.6V.
  • Wide 2.8V to 6V input voltage range.
  • 1.1MHz switching frequency operation.
  • Compact 16-VFQFPN 3x3 mm package.

PM8903 Applications

  • Suitable for subsystem power supplies.
  • Powers CPU, DSP, and FPGA devices.
  • Used in distributed power supply systems.
  • General purpose DC-DC converters.

PM8903 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the PM8903?

The input voltage range is 2.8V to 6V. Additionally, the VCC supply voltage range is 2.9V to 5.5V.

What package is the PM8903 available in?

The PM8903 is available in a 16-VFQFPN with exposed pad, measuring 3x3mm, for surface-mount mounting.

What is the operating temperature range of the PM8903?

The operating junction temperature range is from -25°C to 125°C.

What is the maximum output current of the PM8903?

The maximum output current is 3A.

What is the switching frequency of the PM8903?

The switching frequency is 1.1 MHz.

Is the output voltage of the PM8903 adjustable?

Yes, the output voltage is adjustable down to 0.6V with 1% accuracy.

Does the PM8903 have synchronous rectification?

Yes, it includes a synchronous rectifier.

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