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MP1479 4.2-18V, 1A, 800kHz Step-Down Converter SOT563
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pMPS MP1479 — step-down converter, 4.2-18V input, 1A output, 800 kHz, SOT563./p
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MP1479 4.2-18V, 1A, 800kHz Step-Down Converter SOT563
MPS MP1479 is a step-down converter that accepts 4.2 V to 18 V input, delivers 1 A, switches at 800 kHz, supplied in a SOT563 package.
Key Specifications
| Part Number | MP1479 |
| Input Voltage | 4.2 V to 18 V |
| Output Current | 1 A |
| Switching Frequency | 800 kHz |
| Topology | Step-Down Converter |
| Package | SOT563 |
| Ordering Codes | MP1479 |
Features
- Wide 4.2V to 18V Operating Input Range
- 140mΩ/60mΩ Low RDS(ON) Internal Power MOSFETs
- 190μA Low IQ
- Highly Efficient Synchronous Mode Operation
- Power-Save Mode 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 MP1479?
4.2–18 V input and 1 A output.
What switching frequency does the MP1479 run at?
800 kHz.
Which package is the MP1479 available in?
SOT563.
Shenzhen Gaorunxin Technology Co., Ltd
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