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MP1580 1.22-21V, 2A, 380KHz Step-Down Converter SOIC8
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pMPS MP1580 — Step-Down Converter, 1.22-21V input, 2 A output, SOIC8./p
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MP1580 1.22-21V, 2A, 380KHz Step-Down Converter SOIC8
The MPS MP1580 is a Step-Down Converter. It operates from a 1.22 V to 21 V input, is rated for 2 A and switches at 380 KHz. It is supplied in a SOIC8 package.
The MP1580 is a monolithic step-down switch mode converter with a built in internal power MOSFET.
Key Specifications
| Part Number | MP1580 |
| Function | Step-Down Converter |
| Input Voltage | 1.22 V to 21 V |
| Current Rating | 2 A |
| Switching Frequency | 380 KHz |
| Peak Efficiency | 95% |
| Package | SOIC8 |
| Ordering Codes | MP1580 |
Features
- 2A Output Current
- 0.18Ω Internal Power MOSFET Switch
- Stable with Low ESR Output Ceramic Capacitors
- Up to 95% Efficiency
- 23μA Shutdown Mode
- Fixed 380KHz Frequency
- Thermal Shutdown
- Cycle-by-Cycle Over Current Protection
- Wide 4.75 to 25V Operating Input Range
- Output Adjustable from 1.22V to 21V
Typical Application Circuit
Applications
- Distributed Power Systems
- Battery Chargers
- Pre-Regulator for Linear Regulators "MPS" and "The Future of Analog IC Technology" are 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 MP1580 support?
1.22 V to 21 V. The rated output is 2 A.
Which package and ordering codes apply to the MP1580?
SOIC8; order codes include MP1580.
What are the defining features of the MP1580?
2A Output Current 0.18Ω Internal Power MOSFET Switch
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