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MP2322 3-22V, 1A, 1.25MHz Step-Down Converter QFN-8
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pMPS MP2322 — step-down converter, 3-22V input, 1A output, 1.25 MHz, QFN-8./p
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MP2322 3-22V, 1A, 1.25MHz Step-Down Converter QFN-8
MPS MP2322 is a step-down converter that accepts 3 V to 22 V input, delivers 1 A, switches at 1.25 MHz, supplied in a QFN-8 package.
Key Specifications
| Part Number | MP2322 |
| Input Voltage | 3 V to 22 V |
| Output Current | 1 A |
| Switching Frequency | 1.25 MHz |
| Topology | Step-Down Converter |
| Package | QFN-8 |
| Ordering Codes | MP2322, MP2322A |
Features
- Wide 3V to 22V Operating Input Range
- 5µA Low IQ
- 1A Load Current
- 260mΩ/120mΩ RDS(ON) Internal Power MOSFETs
- High Efficiency from 100µA to 1A Load during VIN from 4V to 22V
- Power-Save Mode (PSM) in Light-Load Condition
- 1.25MHz Fixed Switching Frequency during CCM
- TON Extension to Support Large Duty Cycles
- Power Good (PG) Indication
- EN Shutdown Output Discharge
Applications
- Home Automation, Home Security
- Single- or Multi-Cell Li-Ion Battery Systems
- Multi-Cell Dry Battery Systems
- 12V Input Power Rails
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-8 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP2322?
3–22 V input and 1 A output.
What switching frequency does the MP2322 run at?
1.25 MHz.
Which package is the MP2322 available in?
QFN-8.
Shenzhen Gaorunxin Technology Co., Ltd
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