MP3421 Overview
The MP3421 is a high-efficiency, synchronous, current mode, step-up converter with true output disconnect. The MP3421 starts up from low input voltage (as low as 1.9V) while providing in-rush current limiting and output short-circuit protection. The integrated, P-channel synchronous rectifier improves efficiency and eliminates the need for an external Schottky diode;.
MP3421 Key Features
- Support 5V/2.1A Output at 2.8V Input
- Up to 98% Efficiency
- 1.9V to 5.5V Input Range
- 2.5V to 5.5V Output Range
- Internal Synchronous Rectifier
- 600kHz Fixed-Switching Frequency
- >5.5A Switch-Current Limit Capability
- 43uA Quiescent Current
- High-Efficiency over Full-Load Range
- Internal Soft-start and pensation