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MP3421 1.9-5.5V, 5.5A, 600kHz Synchronous Step-Up Converter QFN14
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pMPS MP3421 — synchronous step-up converter, 1.9-5.5V input, 5.5A output, 600 kHz, QFN14./p
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MP3421 1.9-5.5V, 5.5A, 600kHz Synchronous Step-Up Converter QFN14
MPS MP3421 is a synchronous step-up converter that accepts 1.9 V to 5.5 V input, delivers 5.5 A, switches at 600 kHz, supplied in a QFN14 package.
Key Specifications
| Part Number | MP3421 |
| Input Voltage | 1.9 V to 5.5 V |
| Output Voltage | 2.5 V to 5.5 V |
| Output Current | 5.5 A |
| Switching Frequency | 600 kHz |
| Quiescent Current | 43 uA |
| Topology | Synchronous Step-Up Converter |
| Package | QFN14 |
| Ordering Codes | MP3421 |
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 Compensation
Applications
- Battery-Powered Products
- Power Banks, Juice Packs, Battery Back-up Units
- USB Power Supply
- Consumer Electronic Accessories
Design Notes
- In boost mode the input current is continuous but the output current is pulsed; size the output capacitor for the load transient.
- Power switches are integrated, so the thermal path is the PCB copper under the pad.
- Package QFN14 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP3421?
1.9–5.5 V input and 5.5 A output.
What switching frequency does the MP3421 run at?
600 kHz.
Which package is the MP3421 available in?
QFN14.
Shenzhen Gaorunxin Technology Co., Ltd
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