MP4559DN-LF-Z
IC REG BUCK ADJ 1.5A 8SOIC
Pmic Voltage Regulators Dc Dc Switching Regulators
8-SOIC (0.154", 3.90mm Width) Exposed Pad
Active
$2.16 / unit (market reference)
MOQ: 1 pcs
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Parameters
| Parameter | Value |
|---|---|
| Brand | Monolithic Power Systems Inc. |
| Model | MP4559DN-LF-Z |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) Exposed Pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Topology | Buck |
| Voltage - Input (Min) | 3.8V |
| Voltage - Input (Max) | 55V |
| Voltage - Output | 0.8V |
| Current - Output | 1.5A |
| Frequency - Switching | Up to 2MHz |
| Number of Outputs | 1 |
| Supplier Device Package | 8-SOIC-EP |
| RoHS | RoHS |
| Part Status | Active |
Application & Notes
MP4559DN-LF-Z by Monolithic Power Systems Inc. is a Buck IC commonly used in power supply designs, battery-powered devices, and DC-DC conversion modules. Input voltage up to 55V, output 0.8V. The 8-SOIC (0.154", 3.90mm Width) Exposed Pad package with surface mount mounting is standard for compact designs. Pay attention to input/output capacitor selection and PCB layout — switching regulators are sensitive to trace inductance.
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All Technical Specifications
| Function | Step-Down |
| Topology | Buck |
| Output Type | Adjustable |
| Current - Output | 1.5A |
| Number of Outputs | 1 |
| Output Configuration | Positive |
| Frequency - Switching | Up to 2MHz |
| Synchronous Rectifier | No |
| Voltage - Input (Max) | 55V |
| Voltage - Input (Min) | 3.8V |
| Voltage - Output (Max) | 52V |
| Voltage - Output (Min/Fixed) | 0.8V |
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