MP3421GG Datasheet | Monolithic Power Systems

The Future of Analog IC Technology MP3421 5.5A, 600k Hz High-Efficiency, Synchronous Step-Up Converter with True Output Disconnect in a 2mmx2mm QFN Package DESCRIPTION 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; the P-channel disconnects the output load from the input during shutdown. The MP3421 has 600k Hz switching frequency, which acmodates small external ponents. In addition, its internal pensation and soft-start functions minimize external ponent count. The MP3421 provides a pact solution for a 5V output, 2.1A load requirement, using a supply voltage as low as 2.8V. The MP3421 is available in a 14-pin QFN 2mmx2mm package. 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 - 600k Hz Fixed-Switching Frequency - >5.5A Switch-Current Limit Capability - 43u A Quiescent Current - High-Efficiency over Full-Load Range - Internal Soft-start and pensation - Output-Load Disconnect from Input - OCP, SCP, OVP and OTP Protection - Small 2x2mm QFN14 Package APPLICATIONS - Battery-Powered Products - Power Banks, Juice Packs, Battery Back-up Units - USB Power Supply - Consumer Electronic Accessories - Tablets All MPS parts are lead-free and adhere to the Ro HS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems,...