component
MP1484EN-LF-Z
Public Made by Adomby adom
Monolithic Power Systems DC-DC Converters, SOIC-8-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMP1484EN-LF-Z
Monolithic Power Systems · DC-DC Converters · SOIC-8-EP
MP1484EN-LF-Z from Monolithic Power Systems, in a SOIC-8-EP. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | BS | power_in | High-side gate drive boost input that supplies the drive for the high-side N-Channel MOSFET; connect a 0.01µF or greater capacitor from SW to BS. |
| 2 | IN | power_in | Power input that supplies the IC and the step-down converter switches and must be driven from a 4.75V to 18V source. |
| 3 | SW | power_out | Power switching output node that supplies power to the output through the LC filter, with a capacitor required from SW to BS to power the high-side switch. |
| 4 | GND | power_in | Ground pin, to which the exposed pad on the package backside must also be connected. |
| 5 | FB | input | Feedback input that senses the output voltage through a resistive divider and regulates it to a feedback threshold of 0.925V. |
| 6 | COMP | passive | Compensation node for the regulation loop, where a series RC network is connected from COMP to GND and an additional capacitor may be required. |
| 7 | EN | input | Digital enable input that turns the regulator on when driven high and off when driven low, and is attached to IN through a 100kΩ pull-up resistor for automatic startup. |
| 8 | SS | input | Soft-start control input where a capacitor from SS to GND sets the soft-start period (0.1µF gives 15ms), and leaving it unconnected disables soft-start. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Monolithic Power Systems |
| Package | SOIC-8-EP |
| Category | Power Management ICs |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Shutdown Supply Current | 0.3 | 3 | µA | VEN = 0V | 2 | ||
| Supply Current | 1.3 | 1.5 | mA | VEN = 2.0V, VFB = 1.0V | 2 | ||
| Feedback Voltage | VFB | 0.9 | 0.925 | 0.95 | V | 4.75V ≤ VIN ≤ 18V | 2 |
| High-Side Switch Leakage Current | 0 | 10 | µA | VEN = 0V, VSW = 0V | 2 | ||
| Upper Switch Current Limit | 3.8 | 5.3 | A | Minimum Duty Cycle | 2 | ||
| Oscillation Frequency | Fosc1 | 300 | 340 | 380 | KHz | 2 | |
| EN Shutdown Threshold Voltage | VEN | 1.1 | 1.5 | 2 | V | VEN Rising | 2 |
| EN Lockout Threshold Voltage | 2.2 | 2.5 | 2.7 | V | 3 | ||
| Input Under Voltage Lockout Threshold | 3.8 | 4.05 | 4.4 | V | VIN Rising | 3 | |
| Input Voltage | VIN | 4.75 | 18 | V | 2 | ||
| Output Voltage | VOUT | 0.925 | 20 | V | 2 | ||
| Ambient Operating Temp | -20 | 85 | °C | 2 | |||
| Supply Voltage | VIN | -0.3 | 24 | V | 2 | ||
| Switch Voltage | VSW | -1 | V | Upper limit printed as VIN + 0.3V | 2 | ||
| All Other Pins | -0.3 | 6 | V | 2 | |||
| Junction Temperature | 150 | °C | 2 | ||||
| Storage Temperature | -65 | 150 | °C | 2 | |||
| Feedback Overvoltage Threshold | 1.1 | V | 2 | ||||
| Error Amplifier Voltage Gain | AEA | 400 | V/V | 2 | |||
| Error Amplifier Transconductance | GEA | 820 | µA/V | ΔIC = ±10µA | 2 | ||
| High-Side/Low-Side Switch On-Resistance | 85 | mΩ | 2 | ||||
| Lower Switch Current Limit | 0.9 | A | From Drain to Source | 2 | |||
| COMP to Current Sense Transconductance | GCS | 5.2 | A/V | 2 | |||
| Short Circuit Oscillation Frequency | Fosc2 | 110 | KHz | VFB = 0V | 2 | ||
| Maximum Duty Cycle | DMAX | 90 | % | VFB = 1.0V | 2 | ||
| Minimum On Time | TON | 220 | ns | 2 | |||
| EN Shutdown Threshold Voltage Hysteresis | 220 | mV | 2 | ||||
| EN Lockout Hysteresis | 210 | mV | 3 | ||||
| Input Under Voltage Lockout Threshold Hysteresis | 210 | mV | 3 | ||||
| Soft-Start Current | 6 | µA | VSS = 0V | 3 | |||
| Soft-Start Period | 15 | ms | CSS = 0.1µF | 3 | |||
| Thermal Shutdown | 160 | °C | 3 | ||||
| Thermal Resistance SOIC8N (Exposed Pad), junction to ambient | θJA | 50 | °C/W | Measured on approx. 1 in square of 1 oz copper | 2 | ||
| Thermal Resistance SOIC8N (Exposed Pad), junction to case | θJC | 10 | °C/W | Measured on approx. 1 in square of 1 oz copper | 2 |
CAD (KiCad official)
- Symbol:
MP1484EN-LF-Z - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm - 3D model: SOIC-8-EP (KiCad packages3D, STEP)
- 3D model files:
mp1484en-lf-z-etched.step/mp1484en-lf-z-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mp1484en-lf-z.step/mp1484en-lf-z.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Monolithic Power Systems datasheet (11 pp, sha256
436542f53525e94d, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).