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MP1583 4.75-23V, 3A, 385KHz Step-Down Converter SOIC8E
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pMPS MP1583 — Step-Down Converter, 4.75-23V input, 3 A output, SOIC8E./p
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MP1583 4.75-23V, 3A, 385KHz Step-Down Converter SOIC8E
The MPS MP1583 is a Step-Down Converter. It operates from a 4.75 V to 23 V input, is rated for 3 A and switches at 385 KHz. It is supplied in a SOIC8E package.
The MP1583 is a step-down regulator with a built-in internal Power MOSFET.
Key Specifications
| Part Number | MP1583 |
| Function | Step-Down Converter |
| Input Voltage | 4.75 V to 23 V |
| Current Rating | 3 A |
| Switching Frequency | 385 KHz |
| Peak Efficiency | 95% |
| Package | SOIC8E |
| Ordering Codes | MP1583 |
Features
- 3A Output Current
- Programmable Soft-Start
- 100mΩ Internal Power MOSFET Switch
- Stable with Low ESR Output Ceramic Capacitors
- Up to 95% Efficiency
- 20μA Shutdown Mode
- Fixed 385KHz Frequency
- Thermal Shutdown
- Cycle-by-Cycle Over Current Protection
- Wide 4.75V to 23V Operating Input Range
Typical Application Circuit
Applications
- Distributed Power Systems
- Battery Chargers
- 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 MP1583 support?
4.75 V to 23 V. The rated output is 3 A.
Which package and ordering codes apply to the MP1583?
SOIC8E; order codes include MP1583.
What are the defining features of the MP1583?
3A Output Current Programmable Soft-Start
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