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MP2321 4-19V, 2A Step-Down Converter QFN-14
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pMPS MP2321 — step-down converter, 4-19V input, 2A output, QFN-14./p
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MP2321 4-19V, 2A Step-Down Converter QFN-14
MPS MP2321 is a step-down converter that accepts 4 V to 19 V input, delivers 2 A, supplied in a QFN-14 package.
Key Specifications
| Part Number | MP2321 |
| Input Voltage | 4 V to 19 V |
| Output Current | 2 A |
| Quiescent Current | 40 uA |
| Topology | Step-Down Converter |
| Package | QFN-14 |
| Ordering Codes | MP2321 |
Features
- 4V to 19V Operating Input Range
- 2A Output Current
- 40μA Quiescent Current
- Output Adjustable from 0.6V
- 110mΩ/40mΩ High-Side/Low-Side RDS(ON) for Internal Power MOSFETs
- Power Good Indicator
- Programmable Soft-Start Time
- Forced PWM or Auto PFM/PWM Mode Selectable
- Programmable Switching Frequency
- Thermal Shutdown
Applications
- Tablet PCs
- Solid State Drives
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-14 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP2321?
4–19 V input and 2 A output.
Which package is the MP2321 available in?
QFN-14.
Shenzhen Gaorunxin Technology Co., Ltd
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