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MP2490 4.5-36V, 1.5A, 700kHz Step-Down Converter QFN10
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pMPS MP2490 — step-down converter, 4.5-36V input, 1.5A output, 700 kHz, QFN10./p
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MP2490 4.5-36V, 1.5A, 700kHz Step-Down Converter QFN10
MPS MP2490 is a step-down converter that accepts 4.5 V to 36 V input, delivers 1.5 A, switches at 700 kHz, supplied in a QFN10 package.
Key Specifications
| Part Number | MP2490 |
| Input Voltage | 4.5 V to 36 V |
| Output Current | 1.5 A |
| Switching Frequency | 700 kHz |
| Topology | Step-Down Converter |
| Package | QFN10 |
| Ordering Codes | MP2490 |
Features
- Wide 4.5V to 36V Operating Input Range
- Programmable up to 1.5A Output Current
- Output Adjustable from 0.8V to 15V
- Programmable Output Current Limit without power loss
- 0.25Ω Internal Power MOSFET Switch
- Stable with Low ESR Output Ceramic Capacitors
- 95% Efficiency @ 500mA (Vo=5V)
- Fixed 700kHz Frequency
- Thermal Shutdown
- Cycle-by-Cycle Over Current Protection
Applications
- USB Power Supplies
- Automotive Cigarette Lighter Adapters
Design Notes
- The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
- Keep the input loop short — high di/dt at the switch node sets conducted EMI.
- Power switches are integrated, so the thermal path is the PCB copper under the pad.
- Package QFN10 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP2490?
4.5–36 V input and 1.5 A output.
What switching frequency does the MP2490 run at?
700 kHz, programmable.
Which package is the MP2490 available in?
QFN10.
Shenzhen Gaorunxin Technology Co., Ltd
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