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MPQ2459 55V, 0.5A, 480kHz Step-Down Converter TSOT23
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pMPS MPQ2459 — step-down converter, 55V input, 0.5A output, 480 kHz, TSOT23./p
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MPQ2459 55V, 0.5A, 480kHz Step-Down Converter TSOT23
MPS MPQ2459 is a step-down converter that accepts up to 55 V input, delivers 0.5 A, switches at 480 kHz, supplied in a TSOT23 package.
Key Specifications
| Part Number | MPQ2459 |
| Input Voltage | up to 55 V |
| Output Current | 0.5 A |
| Switching Frequency | 480 kHz |
| Topology | Step-Down Converter |
| Package | TSOT23 |
| Ordering Codes | MPQ2459 |
Features
- Guaranteed Industrial/Automotive Temp Range Limits.
- 0.5A Peak Output Current
- 1Ω Internal Power MOSFET
- Stable with Low-ESR Ceramic Output Capacitors
- Up to 90% Efficiency
- 0.1μA Shutdown Mode
- Fixed 480kHz Frequency
- Thermal Shutdown
- Cycle-by-Cycle Over-Current Protection
- Wide 4.5V-to-55V Input Operating Range
Applications
- Power Meters
- Distributed Power Systems
- Battery Chargers
- Pre-Regulators 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.
- 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 MPQ2459?
–55 V input and 0.5 A output.
What switching frequency does the MPQ2459 run at?
480 kHz.
Which package is the MPQ2459 available in?
TSOT23, with ordering codes MPQ2459GJ-AEC1-Z.
Shenzhen Gaorunxin Technology Co., Ltd
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