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MP2171 2.5-5.5V, 1A, 2.6MHz Step-Down Converter TSOT23
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pMPS MP2171 — step-down converter, 2.5-5.5V input, 1A output, 2.6 MHz, TSOT23./p
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MP2171 2.5-5.5V, 1A, 2.6MHz Step-Down Converter TSOT23
MPS MP2171 is a step-down converter that accepts 2.5 V to 5.5 V input, delivers 1 A, switches at 2.6 MHz, supplied in a TSOT23 package.
Key Specifications
| Part Number | MP2171 |
| Input Voltage | 2.5 V to 5.5 V |
| Output Current | 1 A |
| Switching Frequency | 2.6 MHz |
| Topology | Step-Down Converter |
| Package | TSOT23 |
| Ordering Codes | MP2171 |
Features
- Wide 2.5V to 5.5V Operating Input Range
- Output Voltage as Low as 0.6V
- 100% Duty Cycle in Dropout
- Up to 1A Output Current
- 90mΩ and 50mΩ Internal Power MOSFET Switches
- Default 2.6MHz Switching Frequency with 3.3V Input and 1.8V Output
- EN and Power Good for Power Sequencing
- Cycle-by-Cycle Over-Current Protection (OCP)
- Auto-Discharge at Power-Off
- Short-Circuit Protection (SCP) with Hiccup Mode
Applications
- Automotive Infotainment
- Automotive Clusters
- Automotive Telematics
- Low-Voltage I/O System Power
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.
- AEC-Q100 qualification suits this part to automotive rails.
- Package TSOT23 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP2171?
2.5–5.5 V input and 1 A output.
What switching frequency does the MP2171 run at?
2.6 MHz.
Which package is the MP2171 available in?
TSOT23.
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