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MPQ2456 4.5-50V, 0.5A, 1.2MHz Step-Down Converter TSOT23
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pMPS MPQ2456 — step-down converter, 4.5-50V input, 0.5A output, 1.2 MHz, TSOT23./p
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MPQ2456 4.5-50V, 0.5A, 1.2MHz Step-Down Converter TSOT23
MPS MPQ2456 is a step-down converter that accepts 4.5 V to 50 V input, delivers 0.5 A, switches at 1.2 MHz, supplied in a TSOT23 package.
Key Specifications
| Part Number | MPQ2456 |
| Input Voltage | 4.5 V to 50 V |
| Output Current | 0.5 A |
| Switching Frequency | 1.2 MHz |
| Topology | Step-Down Converter |
| Package | TSOT23 |
| Ordering Codes | MPQ2456 |
Features
- 0.5A Peak Output Current
- 1Ω Internal Power MOSFET
- Capable of Starting Up with a Large Output Capacitor
- Stable with Low ESR Ceramic Output Capacitors
- Up to 90% Efficiency
- 0.1μA Shutdown Mode
- Fixed 1.2MHz Frequency
- Thermal Shutdown
- Cycle-by-Cycle Over-Current Protection (OCP)
- Wide 4.5V to 50V Operating Input Range
Applications
- Power Meters
- Distributed Power Systems
- Battery Chargers
- Pre-Regulator for Linear Regulators
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 MPQ2456?
4.5–50 V input and 0.5 A output.
What switching frequency does the MPQ2456 run at?
1.2 MHz.
Which package is the MPQ2456 available in?
TSOT23.
Shenzhen Gaorunxin Technology Co., Ltd
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