Monolithic Power Systems (MPS) MP1475S & MP1474S Synchronous Step-Down Converters
Monolithic Power Systems (MPS) MP1475S and MP1474S Synchronous Step-Down Converters are high-frequency, rectified, switch-mode converters with built-in power MOSFETs. The MP1475S delivers 3A continuous output current, while the MP1474S delivers 2A with load and line regulation over a 4.5V to 16V input range. The synchronous mode operation on both series delivers higher efficiency over the output current-load range. Current mode operation provides a fast transient response, which eases loop stabilization. Protection features include overcurrent protection (OCP) and thermal shutdown (TSD). MPS) MP1475S and MP1474S Synchronous Step-Down Converters need only a few external components and are offered in an 8-pin TSOT23 package.Features
- Wide 4.5V to 16V operating-input range
- 150mΩ/70mΩ low RDS(ON) internal power MOSFETs (MP1474S)
- 120mΩ/50mΩ low RDS(ON) internal power MOSFETs (MP1475S)
- High-efficiency synchronous-mode operation
- Fixed 500kHz switching frequency
- Synchronizes from a 300kHz to 2MHz external clock
- Power-save mode at light load
- Internal soft-start
- Power good indicator
- Overcurrent protection and hiccup
- Thermal shutdown
- Output adjustable from 0.8V
- Available in an 8-pin TSOT-23 package
Applications
- Notebook systems and I/O power
- Digital set-top boxes
- Flat-panel television and monitors
- Distributed power systems
Application Diagram
公開: 2015-03-17
| 更新済み: 2022-03-11
