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MPM3805 2.5-6V, 0.6A Synchronous Step-Down Converter QFN-12
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pMPS MPM3805 — synchronous step-down converter, 2.5-6V input, 0.6A output, QFN-12./p
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MPM3805 2.5-6V, 0.6A Synchronous Step-Down Converter QFN-12
MPS MPM3805 is a synchronous step-down converter that accepts 2.5 V to 6 V input, delivers 0.6 A, supplied in a QFN-12 package.
Key Specifications
| Part Number | MPM3805 |
| Input Voltage | 2.5 V to 6 V |
| Output Current | 0.6 A |
| Topology | Synchronous Step-Down Converter |
| Package | QFN-12 |
| Ordering Codes | MPM3805 |
Features
- Wide 2.5V to 6V Operating Input Range
- Fixed and Adjustable Output from 0.6V
- QFN-12 (2.5mmx3.0mmx0.9mm) Package
- Total Solution Size 6mm x 3.8mm
- Up to 0.6A Output Current
- 100% Duty Cycle in Dropout
- Ultra Low IQ: 17μA
- EN and Power Good for Power Sequencing
- Cycle-by-Cycle Over-Current Protection
- Short-Circuit Protection with Hiccup Mode
Applications
- Low Voltage I/O System Power
- LDO Replacement
- Power for Portable Products
- Storage (SSD/HDD)
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-12 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MPM3805?
2.5–6 V input and 0.6 A output.
Which package is the MPM3805 available in?
QFN-12, with ordering codes MPM3805GQB-12, MPM3805GQB-18, MPM3805GQB-25.
Shenzhen Gaorunxin Technology Co., Ltd
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