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Monolithic Power Systems MP38115
Ultra Low Voltage, 4A, 5.5V Synchronous Step-Down Switching Regulator
Overview
| Topology | Buck Converter |
| Input voltage | 1.1-5.5 V |
| Switching frequency | 1200-1800 kHz |
| Output 1 | 1.5 V |
| Output 2 | 4.95 V / 4 A |
| Output 3 | 1.8 V |
| Output 4 | 1.2 V |
| Output 5 | 2.5 V |
| Output 6 | 3.3 V |
| IC revision | 0.92 |
Description
The MP38115 is an internally compensated 1.5MHz fixed frequency PWM synchronous step-down regulator. MP38115 operates from a 1.1V to 5.5V input and generates an output voltage as low as 0.8V.The MP38115 integrates a 60mΩ high-side switch and a 60mΩ synchronous rectifier for high efficiency without an external Schottky diode. With peak current mode control and internal compensation, the MP38115 basedsolution delivers a very compact footprint with a minimum component count.The MP38115 is available in a small 3mm x 3mm 10-lead QFN package.
Features
- 4A Output Current
- Input Operation Range: 1.1V to 5.5V
- 60mΩ Internal Power MOSFET Switches
- All Ceramic Capacitor Design
- Up to 95% Efficiency
- 1.5MHz Fixed Switching Frequency
- Adjustable Output from 0.8V to 0.9xVIN
- Internal Soft-Start
- Frequency Synchronization Input
- Power Good Output
- Cycle-by-Cycle Current Limiting
- Hiccup Short Circuit Protection
- Thermal Shutdown
- 3mm x 3mm 10-lead QFN Package
Typical applications
- Network Equipment
- Printers
- µP/ASIC/DSP/FPGA Core and I/O Supplies
- Telecom Equipment
- Point of Load Regulators
- LCD TVs