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MP8642 4.5-23V, 3A, 600kHz Step-Down Converter QFN32
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pMPS MP8642 — step-down converter, 4.5-23V input, 3A output, 600 kHz, QFN32./p
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MP8642 4.5-23V, 3A, 600kHz Step-Down Converter QFN32
MPS MP8642 is a step-down converter that accepts 4.5 V to 23 V input, delivers 3 A, switches at 600 kHz, supplied in a QFN32 package.
Key Specifications
| Part Number | MP8642 |
| Input Voltage | 4.5 V to 23 V |
| Output Current | 3 A |
| Switching Frequency | 600 kHz |
| Topology | Step-Down Converter |
| Package | QFN32 |
| Ordering Codes | MP8642 |
Features
- 3A Current for Each Output
- 80mΩ Internal Power MOSFET Switch
- Stable with Low ESR Output Ceramic Capacitors
- Up to 95% Efficiency
- Power Good Indicator
- Fixed 600kHz Frequency
- Synchronizable to >1MHz External Clock
- Thermal Shutdown
- Cycle-by-Cycle Over Current Protection
- Wide 4.5V to 23V Operating Input Range
Typical Application Circuit
Applications
- Point of Load Regulator in Distributed Power Systems
- Digital Set Top Boxes
- Personal Video Recorders
- Broadband Communications
Design Notes
- The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
- Keep the input loop short — high di/dt at the switch node sets conducted EMI.
- Power switches are integrated, so the thermal path is the PCB copper under the pad.
- Package QFN32 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP8642?
4.5–23 V input and 3 A output.
What switching frequency does the MP8642 run at?
600 kHz.
Which package is the MP8642 available in?
QFN32.
Shenzhen Gaorunxin Technology Co., Ltd
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