PM8903ATR DC-DC Switching Converters by STMicroelectronics

3 A step-down monolithic switching regulator

Status: Active
Series: PM8903A
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The PM8903A is a high efficiency monolithic step-down switching regulator designed to deliver up to 3 A continuous current. The IC operates from 2.8 V to 6 V input voltage (V IN ). The PM8903A features low-resistance integrated nMOS and proprietary pulse-skipping mode for optimum efficiency over all the loading range. The voltage mode control loop allows the widest range of output filters. Current sense is internally thermally compensated for optimum precision. The integrated 0.6 V reference allows the regulation of output voltages with ±1% accuracy over temperature variations. Switching frequency is typically set to 1.1 MHz and can be programmed to 0.8 MHz or 1.0 MHz. Out of phase synchronization allows the reduction of input RMS current. The PM8903A provides precise dual-threshold overcurrent protection as well as over/undervoltage and overtemperature protection. PGOOD output easily provides real-time information on the output voltage. The PM8903A is available in VFQFPN16 3 x 3 mm.

Where to Buy

Prices starting from US$0.85

Distributor Stock
Logo for Farnell
Farnell
from US$0.85
3,414
in stock
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Logo for Newark Electronics
Newark Electronics
from US$1.18
3,414
in stock
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Logo for element14
element14
from US$1.67
3,414
in stock
Buy Now
Logo for Avnet America
Avnet America
-
-
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Logo for EBV Elektronik
EBV Elektronik
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-
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Logo for Avnet Silica
Avnet Silica
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Features

Integrated 35 mΩ MOSFETs for high efficiency
3 A continuous output current
2.8 V to 6 V input voltage (VIN)
2.9 V to 5.5 V supply voltage (VCC)
Adjustable output voltage down to 0.6 V
1% output voltage accuracy
1.1 MHz switching frequency operation
PSKIP mode to optimize light load efficiency
Embedded bootstrap diode
Thermally compensated loss-less current sense across HS and LS MOSFETs
OV/UV/OC and overtemperature protection
Internal soft-start and soft-stop
Interleaving synchronization (up to 2 ICs)
Power Good output
Shutdown function (< 15 μA quiescent current)
VFQFPN16 3 x 3 mm compact package

Alternative Descriptions

Dc/Dc Conv, Buck, 1.1Mhz, Vfqfn-16 | Newark Electronics
DC/DC CONV, BUCK, 1.1MHZ, VFQFN-16 | element14
Conv DC-DC Single Step Down 2.8V to 6V 16-Pin VFQFPN T/R | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a PM8903ATR?

Additional datasheets, footprints and schematics for PM8903ATR are listed on our Part Details page. You can also find images and similar parts to PM8903ATR on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for PM8903ATR on our Product Comparison page. Access via the 'View Pricing & Stock' button to view PM8903ATR price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does PM8903ATR fall under?

The PM8903ATR is listed under Power Management > DC-DC Switching Converters > Buck Regulators.

Can I view similar or alternative parts?

You can view similar parts to PM8903ATR when available in the Buck Regulators range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the PM8903ATR you can contact the distributor directly for product support, shipping queries etc.

Is the PM8903ATR RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for PM8903ATR have stock available?

Authorised distributors including Newark Electronics, element14, Farnell, Avnet America and EBV Elektronik have stock available or on a lead time for PM8903ATR.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for PM8903ATR often in real-time on the comparison pages.

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