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MP1604 2.4-5.5V, 4A, 1.25MHz Synchronous Step-Down Converter SOT583
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pMPS MP1604 — synchronous step-down converter, 2.4-5.5V input, 4A output, 1.25 MHz, SOT583./p
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MP1604 2.4-5.5V, 4A, 1.25MHz Synchronous Step-Down Converter SOT583
MPS MP1604 is a synchronous step-down converter that accepts 2.4 V to 5.5 V input, delivers 4 A, switches at 1.25 MHz, supplied in a SOT583 package.
Key Specifications
| Part Number | MP1604 |
| Input Voltage | 2.4 V to 5.5 V |
| Output Current | 4 A |
| Switching Frequency | 1.25 MHz |
| Topology | Synchronous Step-Down Converter |
| Package | SOT583 |
| Ordering Codes | MP1604 |
Features
- Wide 2.4V to 5.5V Operating Input Voltage (VIN) Range
- Up to 4A Output Current (IOUT)
- 16mΩ and 10mΩ Internal Power MOSFET Switches
- Low Quiescent Current (IQ): 4.5μA Typically
- 1.25MHz Fixed Switching Frequency (fSW)
- Enable (EN) Function
- High Feedback Accuracy: o ±0.75% at Junction Temperature (TJ) = 25°C o ±1% at TJ = -40°C to +125°C
- Output Discharge Function
- Power Good (PG) Indication
- Adjustable Output Voltage (VOUT) from 0.4V
Applications
- IP Cameras
- Notebooks and PCs
- SSD/Optical Modules
- Multi-Function Printers
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 SOT583 — check the land pattern in the datasheet before layout.
Common Questions
What is the input and output rating of the MP1604?
2.4–5.5 V input and 4 A output.
What switching frequency does the MP1604 run at?
1.25 MHz.
Which package is the MP1604 available in?
SOT583, with ordering codes MP1604GTL-Z.
Shenzhen Gaorunxin Technology Co., Ltd
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