MP9943GQ-Z IC REG BUCK ADJUSTABLE 3A 8QFN. Step-down buck regulator with 4V input, 3A output, 410kHz switching frequency.
Mfr Part #:

MP9943GQ-Z

Available from 6 distributors
Mfr Name: Monolithic Power Systems
Monolithic Power Systems
IC REG BUCK ADJUSTABLE 3A 8QFN. Step-down buck regulator with 4V input, 3A output, 410kHz switching frequency.
Total Stock: 141,116 pcs
$ Price Range: $1.08

MP9943GQ-Z Available from 6 distributors

Authorised
Non-Authorised

MP9943GQ-Z Specifications Quick View

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

MP9943GQ-Z Description

Short technical summary and product information.

The MP9943GQ-Z is a step-down (buck) switching regulator from Monolithic Power Systems. It features an adjustable output voltage and delivers up to 3A of output current. The device operates with a switching frequency of 410kHz and supports an input voltage of 4V.

 

This regulator uses a synchronous rectifier topology for improved efficiency. It is designed for surface mount assembly in an 8-QFN (3x3) package, also known as 8-VDFN. The operating temperature range is -40°C to 125°C (junction).

 

Typical applications include power supply designs requiring a compact, efficient step-down conversion. The adjustable output allows flexibility in setting the desired voltage.

MP9943GQ-Z Quick Information

Product Type: Voltage Regulator - DC DC Switching Regulator
Canonical Name: MP9943GQ-Z - IC REG BUCK ADJUSTABLE 3A 8QFN
Subcategory: Buck Regulator

MP9943GQ-Z Compliance

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

MP9943GQ-Z Estimated Pricing

Qty Low High
1+ $1.08 $1.08

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

MP9943GQ-Z Features

  • Step-down buck regulator with 3A output current.
  • Adjustable output voltage for design flexibility.
  • Synchronous rectifier for high efficiency.
  • 410kHz switching frequency for compact design.
  • Wide operating temperature range -40°C to 125°C.

MP9943GQ-Z Applications

  • Used in point-of-load power supplies.
  • Ideal for battery-powered devices.
  • Suitable for distributed power architectures.

MP9943GQ-Z FAQs

3 frequently asked questions generated from this part’s specifications.
What is the operating voltage of the MP9943GQ-Z?

The operating voltage is 4V.

What is the package type of the MP9943GQ-Z?

The package is 8-QFN (3x3) / 8-VDFN, surface mount.

What is the operating temperature range?

-40°C to 125°C (junction).

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