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MP2270 4.5-24V, 1.8A, 700kHz Step-Down Converter MSOP10
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pMPS MP2270 — Step-Down Converter, 4.5-24V input, 1.8 A output, MSOP10./p
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MP2270 4.5-24V, 1.8A, 700kHz Step-Down Converter MSOP10
The MPS MP2270 is a Step-Down Converter. It operates from a 4.5 V to 24 V input, is rated for 1.8 A and switches at 700 kHz. It is supplied in a MSOP10 package.
The MP2270 is a monolithic step-down switch mode converter with a built-in internal power MOSFET.
Key Specifications
| Part Number | MP2270 |
| Function | Step-Down Converter |
| Input Voltage | 4.5 V to 24 V |
| Current Rating | 1.8 A |
| Switching Frequency | 700 kHz |
| Package | MSOP10 |
| Ordering Codes | MP2270 |
Features
- 1.8A Continuous Output Current
- 0.3Ω Internal Power MOSFET Switch
- Stable with Low ESR Output Ceramic Capacitors
- 0.1μA Shutdown Mode
- Fixed 700kHz Frequency
- Thermal Shutdown
- Cycle-by-Cycle Over Current Protection
- Wide 4.5V to 24V Operating Input Range
- Output Adjustable from 0.81V to 20V
- Available in a 10-pin Exposed Pad MSOP Package
Typical Application Circuit
Applications
- Broadband Communications Equipment
- Digital Entertainment Systems
- Distributed Power Systems
- Battery Charger
- Pre-Regulator for Linear Regulators "MPS" and "The Future of Analog IC Technology" are Registered Trademarks of Monolithic Power Systems, Inc.
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 MP2270 support?
4.5 V to 24 V. The rated output is 1.8 A.
Which package and ordering codes apply to the MP2270?
MSOP10; order codes include MP2270.
What are the defining features of the MP2270?
1.8A Continuous Output Current 0.3Ω Internal Power MOSFET Switch
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