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MP9161A 2.5-6V, 2A, 1.5MHz Synchronous Step-Down Converter TSOT23
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pMPS MP9161A — synchronous step-down converter, 2.5-6V input, 2A output, 1.5 MHz, TSOT23./p
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MP9161A 2.5-6V, 2A, 1.5MHz Synchronous Step-Down Converter TSOT23
MPS MP9161A is a synchronous step-down converter that accepts 2.5 V to 6 V input, delivers 2 A, switches at 1.5 MHz, supplied in a TSOT23 package.
Key Specifications
| Part Number | MP9161A |
| Input Voltage | 2.5 V to 6 V |
| Output Current | 2 A |
| Switching Frequency | 1.5 MHz |
| Topology | Synchronous Step-Down Converter |
| Package | TSOT23 |
| Ordering Codes | MP9161A |
Features
- Very Low IQ: 17μA
- Default 1.5MHz Switching Frequency
- 1.5% VFB Accuracy
- EN and Power Good for Power Sequencing
- Wide 2.5V to 6V Operating Input Range
- Output Adjustable from 0.6V
- Up to 2A Output Current
- 100% Duty Cycle in Dropout
- 110mΩ and 60mΩ Internal Power MOSFET Switches
- Cycle-by-Cycle Over-Current Protection
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 TSOT23 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP9161A?
2.5–6 V input and 2 A output.
What switching frequency does the MP9161A run at?
1.5 MHz.
Which package is the MP9161A available in?
TSOT23.
Shenzhen Gaorunxin Technology Co., Ltd
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