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Overview
| Topology | Buck Converter |
| Input voltage | 4.5-23 V |
| Switching frequency | 400-800 kHz |
| Output 1 | 3.3 V / 3 A |
| IC revision | 1.1 |
Description
The MP38870 is a monolithic step-down switch mode converter with a built in internal high-side power MOSFET. It achieves 3A continuous output current over a wide input supply range with excellent load and line regulation.Current mode operation provides fast transient response and reliable over current protection.Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown.The MP38870 requires a minimum number of readily available standard external components and is available in a space saving 3mm x 4mm 14-pin QFN package.
Features
- Wide 4.5V to 14V Operating Input Range
- 3A Continuous Output Current
- 80mΩ Internal Power MOSFET Switch
- Power Good Indicator
- Synchronous Gate Driver Delivers up to 95% Efficiency
- Fixed 600KHz Frequency
- External Synchronous Option: 250kHz1.5MHz
- Cycle-by-Cycle Over Current Protection
- Thermal Shutdown
- Output Adjustable from 0.8V
- Stable with Low ESR Output Ceramic Capacitors
- Available in a 3mm x 4mm 14-Pin QFN Package
Typical applications
- Broadband Communications
- Point of Load Regulator in Distributed Power System
- Digital Set Top Boxes
- Personal Video Recorders
- Flat Panel Television
- Monitors