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1. Description
MP3421GG-Z is efficient, synchronous, Current mode, step-up converter with true The output is disconnected. MP3421 starts from low input voltage (As low as 1.9V), while providing inrush current Limit and output short circuit protection. This Integrated P-channel synchronous rectifier Improve efficiency and eliminate External Schottky diode; P channel Disconnect the output load from the input During shutdown. The switching frequency of MP3421 is 600kHz, Accommodate small exterior ingredient. In addition, its internal Compensation and soft start functions minimize Number of external components. MP3421 Provide a compact solution with 5V output, 2.1A load requirement, use power supply voltage As low as 2.8V. MP3421GG-Z is available in a 14-pin QFN package 2mmx2mm package.
2. FEATURES
1. Support 5V/2.1A Output at 2.8V Input
2. Up to 98% Efficiency
3. 1.9V to 5.5V Input Range
4. 2.5V to 5.5V Output Range
5. Internal Synchronous Rectifier
6. 600kHz Fixed-Switching Frequency
7. >5.5A Switch-Current Limit Capability
8. 43uA Quiescent Current
9. High-Efficiency over Full-Load Range
10. Internal Soft-start and Compensation
11. Output-Load Disconnect from Input
12. OCP, SCP, OVP and OTP Protection
13. Small 2x2mm QFN14 Package
3. APPLICATIONS
1. Battery-Powered Products
2. Power Banks, Juice Packs, Battery Back-up Units
3. USB Power Supply
4. Consumer Electronic Accessories
5. Tablets
4. PACKAGE REFERENCE
5. TYPICAL APPLICATION
6. FUNCTION DIAGRAM
7. PACKAGE INFORMATION
