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MP2377 4.5-21V, 3A, 600kHz Step-Down Converter SOIC
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pMPS MP2377 — Step-Down Converter, 4.5-21V input, 3 A output, SOIC./p
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MP2377 4.5-21V, 3A, 600kHz Step-Down Converter SOIC
The MPS MP2377 is a Step-Down Converter. It operates from a 4.5 V to 21 V input, is rated for 3 A and switches at 600 kHz. It is supplied in a SOIC package.
The MP2377 is a monolithic step-down switch mode converter with a built in high-side power MOSFET.
Key Specifications
| Part Number | MP2377 |
| Function | Step-Down Converter |
| Input Voltage | 4.5 V to 21 V |
| Current Rating | 3 A |
| Switching Frequency | 600 kHz |
| Package | SOIC |
| Ordering Codes | MP2377 |
Features
- Wide 4.5V to 21V Operating Input Range
- 3A Output Current
- 100mΩ Internal Power MOSFET Switch
- Power Good Indicator
- Fixed 600kHz Frequency
- Synchronizable to >1MHz External Clock
- Over Current Latch Off Protection
- Thermal Shutdown
- Output Adjustable from 0.81V
- Stable with Low ESR Output Ceramic Capacitors
Typical Application Circuit
Applications
- 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 MP2377 support?
4.5 V to 21 V. The rated output is 3 A.
Which package and ordering codes apply to the MP2377?
SOIC; order codes include MP2377.
What are the defining features of the MP2377?
Wide 4.5V to 21V Operating Input Range 3A Output Current
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