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MP8638 4.5-16V, 12A Synchronous Step-Down Converter QFN-16
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pMPS MP8638 — synchronous step-down converter, 4.5-16V input, 12A output, QFN-16./p
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MP8638 4.5-16V, 12A Synchronous Step-Down Converter QFN-16
MPS MP8638 is a synchronous step-down converter that accepts 4.5 V to 16 V input, delivers 12 A, supplied in a QFN-16 package.
Key Specifications
| Part Number | MP8638 |
| Input Voltage | 4.5 V to 16 V |
| Output Current | 12 A |
| Topology | Synchronous Step-Down Converter |
| Package | QFN-16 |
| Ordering Codes | MP8638 |
Features
- Wide 4.5V to 16V Operating Input Voltage (VIN) Range
- 100µA Low Quiescent Current (IQ)
- 12A Continous Output Current (IOUT)
- Adjustable Current Limit (ILIMT)
- Selectable Switching Frequency (fSW)
- Selectable External and Internal 3V3 Power Supply
- Adaptive Constant-On-Time (COT) Control for Fast Transient Response
- DC Auto-Tune Loop and Remote Differential Sense
- Low RDS(ON) Internal Power MOSFETs
- Proprietary Switching Loss Reduction Technique
Applications
- Telecommunication Systems
- Networking Systems
- Servers, Cloud Computing, and Storage
- General-Purpose Point-of-Load (POL) Systems
- Base Stations
- 12V Distribution Power Systems
- High-End Televisions
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 QFN-16 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP8638?
4.5–16 V input and 12 A output.
Which package is the MP8638 available in?
QFN-16, with ordering codes MP8638GQ-Z.
Shenzhen Gaorunxin Technology Co., Ltd
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