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MP2491N 4-32V, 6A, 540kHz Synchronous Step-Down Converter QFN-13
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pMPS MP2491N — synchronous step-down converter, 4-32V input, 6A output, 540 kHz, QFN-13./p
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MP2491N 4-32V, 6A, 540kHz Synchronous Step-Down Converter QFN-13
MPS MP2491N is a synchronous step-down converter that accepts 4 V to 32 V input, delivers 6 A, switches at 540 kHz, supplied in a QFN-13 package.
Key Specifications
| Part Number | MP2491N |
| Input Voltage | 4 V to 32 V |
| Output Voltage | 0.5 V to 30 V |
| Output Current | 6 A |
| Switching Frequency | 540 kHz |
| Topology | Synchronous Step-Down Converter |
| Package | QFN-13 |
| Ordering Codes | MP2491N |
Features
- Wide 4V to 32V Operating Input Voltage (VIN) Range
- 0.5V to 30V Output Voltage (VOUT) Range
- 6A Output Current (IOUT)
- Constant-On-Time (COT) Control
- Low-Dropout Mode
- 30mΩ/20mΩ Internal MOSFET Switches
- Fixed 540kHz Switching Frequency (fSW)
- EN Shutdown Discharge
- Output Over-Voltage Protection (OVP)
- Adjustable Automatic Pulse-Frequency Modulation (PFM)/Pulse-Width Modulation (PWM) Mode or Forced PWM Mode
Applications
- TVs, Monitors
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 QFN-13 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP2491N?
4–32 V input and 6 A output.
What switching frequency does the MP2491N run at?
540 kHz.
Which package is the MP2491N available in?
QFN-13, with ordering codes MP2491NGQB-Z.
Shenzhen Gaorunxin Technology Co., Ltd
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