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MP1477 4.2-17V, 3A, 800kHz Step-Down Converter SOT563
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pMPS MP1477 — step-down converter, 4.2-17V input, 3A output, 800 kHz, SOT563./p
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MP1477 4.2-17V, 3A, 800kHz Step-Down Converter SOT563
MPS MP1477 is a step-down converter that accepts 4.2 V to 17 V input, delivers 3 A, switches at 800 kHz, supplied in a SOT563 package.
Key Specifications
| Part Number | MP1477 |
| Input Voltage | 4.2 V to 17 V |
| Output Current | 3 A |
| Switching Frequency | 800 kHz |
| Topology | Step-Down Converter |
| Package | SOT563 |
| Ordering Codes | MP1477 |
Features
- Wide 4.2V to 17V Operating Input Range
- 58mΩ/27mΩ Low RDS(ON) Internal Power MOSFETs
- 200µA Low IQ Current
- High-Efficiency Synchronous Mode Operation
- Power Save Mode (PSM) at Light Load
- Fast Load Transient Response
- 800kHz Switching Frequency
- Internal Soft Start (SS)
- Over-Current Protection (OCP) and Hiccup
- Thermal Shutdown
Applications
- Security Cameras
- Digital Set-Top Boxes
- Flat-Panel Televisions and Monitors
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 SOT563 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP1477?
4.2–17 V input and 3 A output.
What switching frequency does the MP1477 run at?
800 kHz.
Which package is the MP1477 available in?
SOT563.
Shenzhen Gaorunxin Technology Co., Ltd
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