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MP2303 4.75-28V, 3A, 340KHz Synchronous Rectified Step-Down Converter SOIC
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pMPS MP2303 — Synchronous Rectified Step-Down Converter, 4.75-28V input, 3 A output, SOIC./p
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MP2303 4.75-28V, 3A, 340KHz Synchronous Rectified Step-Down Converter SOIC
The MPS MP2303 is a Synchronous Rectified Step-Down Converter. It operates from a 4.75 V to 28 V input, is rated for 3 A and switches at 340 KHz. It is supplied in a SOIC package.
Key Specifications
| Part Number | MP2303 |
| Function | Synchronous Rectified Step-Down Converter |
| Input Voltage | 4.75 V to 28 V |
| Current Rating | 3 A |
| Switching Frequency | 340 KHz |
| Peak Efficiency | 95% |
| Package | SOIC |
| Ordering Codes | MP2303 |
Features
- 3A Output Current
- Wide 4.75V to 28V Operating Input Range
- Integrated Power MOSFET Switches
- Output Adjustable from 0.8V to 25V
- Up to 95% Efficiency
- Programmable Soft-Start
- Stable with Low ESR Ceramic Output Capacitors
- Fixed 340KHz Frequency
- Cycle-by-Cycle Over Current Protection
- Input Under Voltage Lockout
Typical Application Circuit
Applications
- Distributed Power Systems
- Pre-Regulator for Linear Regulators
Design Notes
- Size the inductor for the ripple current at the actual switching frequency, typically 30% of the DC load — not for the DC rating alone.
- The hot loop from input capacitor through the switch to ground sets conducted EMI. Keep that copper area as small as the layout allows.
- Output ripple is set by the capacitor ESR and its DC-bias derating; a 10 µF ceramic often behaves like 4 µF at the rated output voltage.
- Route the feedback divider from the output capacitor terminals, away from the switch node.
Common Questions
What input voltage does the MP2303 support?
4.75 V to 28 V. The rated output is 3 A.
Which package and ordering codes apply to the MP2303?
SOIC; order codes include MP2303.
What are the defining features of the MP2303?
3A Output Current Wide 4.75V to 28V Operating Input Range
Shenzhen Gaorunxin Technology Co., Ltd
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