MP9943GQ Synchronous Buck Converter IC - QFN-8 Package

MP9943GQSynchronous Step Down Converter IC is a high-efficiency synchronous step-down (buck) DC-DC converter designed to deliver up to 3A peak output current with excellent line and load regulation. It operates from a wide 4V to 36V input voltage range and integrates low RDS(ON) power MOSFETs, making it ideal for industrial equipment, distributed power systems, automotive electronics, and embedded applications. The device features synchronous rectification, programmable output voltage from 0.8V, Power Good indication, internal soft-start, and comprehensive protection functions for reliable operation.

MP9943GQ Synchronous Step Down Converter IC Datasheet

Features:

1. Wide 4V to 36V Input Voltage Range
2. 3A Peak Output Current
3. High-Efficiency Synchronous Buck Converter
4. Integrated 85mΩ / 55mΩ Power MOSFETs
5. 410kHz Fixed Switching Frequency
6. External Clock Synchronization (200kHz to 2.2MHz)
7. Adjustable Output Voltage from 0.8V
8. Current Mode Control
9. Internal Power Save Mode (PFM)
10. Integrated Soft-Start
11. Power Good (PG) Output
12. Over Current Protection with Hiccup Mode
13. Thermal Shutdown Protection
14. High Duty Cycle Operation
15. Excellent Line and Load Regulation
16. QFN-8 (3mm × 3mm) Package
17. RoHS Compliant

Specifications:

Pin Configuration:

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Package Includes:

1 x MP9943GQ Synchronous Step Down Converter IC - QFN-8 Package