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MPQ4272-AEC1 4-36V, 3A, 250kHz Buck Converter QFN-21
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pMPS MPQ4272-AEC1 — buck converter, 4-36V input, 3A output, 250 kHz, QFN-21./p
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MPQ4272-AEC1 4-36V, 3A, 250kHz Buck Converter QFN-21
MPS MPQ4272-AEC1 is a buck converter that accepts 4 V to 36 V input, delivers 3 A, switches at 250 kHz, supplied in a QFN-21 package.
Key Specifications
| Part Number | MPQ4272-AEC1 |
| Input Voltage | 4 V to 36 V |
| Output Voltage | 1 V to 21 V |
| Output Current | 3 A |
| Switching Frequency | 250 kHz |
| Topology | Buck Converter |
| Package | QFN-21 |
| Ordering Codes | MPQ4272-AEC1 |
Features
- Dual 3A or Shared 6A Buck Converter
- Supports USB PD 3.0
- Wide 4V to 36V Operating Input Voltage Range
- 1V to 21V Output Voltage Range with 12.6mV Resolution, VOUT Scale Loop = 0.0635
- Selectable 250kHz, 420kHz, 1.1MHz, or 2.1MHz Switching Frequency
- Frequency Spread Spectrum
- Low-Dropout Mode
- Line Drop Compensation
- Accurate Adjustable CC Output Current Limit (50mA/Step via the I2C)
- 22mΩ High-Side and 26mΩ Low-Side Low RDS(ON) Internal Buck Power MOSFETs
Applications
- USB Power Delivery
- USB-Dedicated Charging Ports (DCP)
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 QFN-21 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MPQ4272-AEC1?
4–36 V input and 3 A output.
What switching frequency does the MPQ4272-AEC1 run at?
250 kHz.
Which package is the MPQ4272-AEC1 available in?
QFN-21.
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