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MP2158 2.5-6V, 1A, 1.5MHz Step-Down Converter QFN8
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pMPS MP2158 — step-down converter, 2.5-6V input, 1A output, 1.5 MHz, QFN8./p
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MP2158 2.5-6V, 1A, 1.5MHz Step-Down Converter QFN8
MPS MP2158 is a step-down converter that accepts 2.5 V to 6 V input, delivers 1 A, switches at 1.5 MHz, supplied in a QFN8 package.
Key Specifications
| Part Number | MP2158 |
| Input Voltage | 2.5 V to 6 V |
| Output Current | 1 A |
| Switching Frequency | 1.5 MHz |
| Topology | Step-Down Converter |
| Package | QFN8 |
| Ordering Codes | MP2158 |
Features
- Very Low IQ: 17μA
- Default 1.5MHz Switching Frequency
- EN and Power Good for Power Sequencing
- Ultra-small 2.0x1.5mm QFN8 Package
- Wide 2.5V to 6V Operating Input Range Output Adjustable from 0.6V
- Up to 1A Output Current
- 100% Duty Cycle in Dropout
- 118mΩ and 88mΩ Internal Power MOSFET Switches
- Cycle-by-Cycle Over Current Protection
- Short Circuit Protect with Hiccup Mode
Applications
- Wireless/Networking Cards
- Portable Instruments
- Battery Powered Devices
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 QFN8 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP2158?
2.5–6 V input and 1 A output.
What switching frequency does the MP2158 run at?
1.5 MHz.
Which package is the MP2158 available in?
QFN8.
Shenzhen Gaorunxin Technology Co., Ltd
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