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MP4582 4.5-100V, 2A, 400kHz Step-Down Converter QFN-19
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pMPS MP4582 — step-down converter, 4.5-100V input, 2A output, 400 kHz, QFN-19./p
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MP4582 4.5-100V, 2A, 400kHz Step-Down Converter QFN-19
MPS MP4582 is a step-down converter that accepts 4.5 V to 100 V input, delivers 2 A, switches at 400 kHz, supplied in a QFN-19 package.
Key Specifications
| Part Number | MP4582 |
| Input Voltage | 4.5 V to 100 V |
| Output Voltage | 0.8 V to 35 V |
| Output Current | 2 A |
| Switching Frequency | 400 kHz |
| Quiescent Current | 8 uA |
| Topology | Step-Down Converter |
| Package | QFN-19 |
| Ordering Codes | MP4582, MP4582GQVE-Z |
Features
- 4.5V to 100V Input Voltage (VIN) Range
- 8μA Quiescent Current (IQ)
- Fixed 400kHz Switching Frequency (fSW)
- Selectable Power-Save Mode (PSM) or Forced Continuous Conduction Mode (FCCM)
- 0.8V to 35V Output Voltage (VOUT) Range
- 180mΩ/90mΩ Internal MOSFETs
- Power Good (PG) Indication
- Additional BIAS Pin for High-Efficiency VCC (VCC) Regulator
- Internal Loop Compensation and Soft Start (SS)
- Available in a QFN-19 (3mmx5mm) Package
Applications
- Power Tools
- Solar Inverters/Optimizers
- Portable Power Stations
- Battery Management Systems (BMS)
Design Notes
- The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
- Keep the input loop short — high di/dt at the switch node sets conducted EMI.
- Power switches are integrated, so the thermal path is the PCB copper under the pad.
- Package QFN-19 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP4582?
4.5–100 V input and 2 A output.
What switching frequency does the MP4582 run at?
400 kHz.
Which package is the MP4582 available in?
QFN-19, with ordering codes MP4582GQVE-Z.
Shenzhen Gaorunxin Technology Co., Ltd
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