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MP38894 4.5-42V, 4.5A, 420kHz Step-Down Converter SOIC
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pMPS MP38894 — step-down converter, 4.5-42V input, 4.5A output, 420 kHz, SOIC./p
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MP38894 4.5-42V, 4.5A, 420kHz Step-Down Converter SOIC
MPS MP38894 is a step-down converter that accepts 4.5 V to 42 V input, delivers 4.5 A, switches at 420 kHz, supplied in a SOIC package.
Key Specifications
| Part Number | MP38894 |
| Input Voltage | 4.5 V to 42 V |
| Output Current | 4.5 A |
| Switching Frequency | 420 kHz |
| Topology | Step-Down Converter |
| Package | SOIC |
| Ordering Codes | MP38894 |
Features
- Wide 4.5V to 42V Operating Input Range
- 4.5A Continuous Output Current
- ±1.5% Vfb Accuracy
- 100mΩ Internal Power MOSFET Switch
- Synchronizable Gate Driver Delivers up to 95% Efficiency
- Fixed 420kHz Frequency
- Synchronizable up to 1.5MHz
- Cycle-by-Cycle Over Current Protection with Hiccup retry
- Thermal Shutdown
- Output Adjustable from 0.8V to 15V
Typical Application Circuit
Applications
- Digital Set Top Boxes
- Personal Video Recorders
- Broadband Communications
- Flat Panel Television and Monitors "MPS" and "The Future of Analog IC Technology" are Registered Trademarks of Monolithic Power Systems, Inc.
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 SOIC — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP38894?
4.5–42 V input and 4.5 A output.
What switching frequency does the MP38894 run at?
420 kHz.
Which package is the MP38894 available in?
SOIC.
Shenzhen Gaorunxin Technology Co., Ltd
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