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Overview
| Topology | Buck Converter |
| Input voltage | 6-20 V |
| Switching frequency | 400-600 kHz |
| Output 1 | 3.3 V / 4 A |
| IC revision | 1.16 |
Description
The MP28251 is a synchronous, rectified, stepdown, switch-mode converter with internal power MOSFETs. It offers a very compact solution to achieve a 4A continuous output current over a wide input supply range with excellent load and line regulation. The MP28251 has synchronous mode operation forhigher efficiency over the output current load range.Current-mode operation provides a fast transient response and eases loop stabilization. Full protection features include over-current protection and thermal shutdown.The MP28251 requires a minimal number of readily-available standard external components and is available in a space saving 2mm×3mm14-pin QFN package.
Features
- Wide 4.75V-to-20V Operating Input Range
- 4A Output Current
- Low RDS(ON) Internal Power MOSFETs
- Programmable Switching Frequency
- Programmable EN Delay
- Frequency SYNC from 300kHz to 2MHz External Clock
- Low Power Mode Selectable by an External Signal
- External Soft Start
- OCP and Thermal Shutdown
- Available in a 14-pin QFN2×3 Package
Typical applications
- Set Top Boxes
- Cable Modems
- DSL Modems