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MD7671F40PC1
Public Made by Adomby adom
Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-5. 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
markdownMD7671F40PC1
Shanghai Mingda Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-5
MD7671F40PC1 from Shanghai Mingda Microelectronics, in a SOT-89-5. 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 | EN | input | Enable pin: minimum 1.6V enables the device and maximum 0.4V shuts it down, with the output discharged to GND during shutdown. |
| 2 | GND | power_in | Ground; the package drawing also labels the top tab as pin 2, which should be connected to a large ground plane for thermal conductivity. |
| 3 | NC | unconnected | Non-connection pin, which can be connected to GND or left open. |
| 4 | VIN | power_in | Power input pin (2V to 6V operating range), to be closely decoupled to GND with a 4.7µF or greater ceramic capacitor. |
| 5 | VOUT | power_out | Regulator output pin (4.0V fixed for this variant, up to 1A), requiring a 4.7µF or larger ceramic output capacitor close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | SOT-89-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage (absolute maximum) | VIN | -0.3 | 7 | V | Unless otherwise indicated: Ta=25℃ | 3 | |
| Output Voltage (absolute maximum) | VOUT | -0.3 | V | Upper limit printed as VIN+0.3 | 3 | ||
| Operating Ambient Temperature | Topr | -40 | 85 | ℃ | 3 | ||
| Storage Temperature | Tstg | -40 | 125 | ℃ | 3 | ||
| ESD Protection HBM | ESD HBM | 4000 | V | HBM | 3 | ||
| Input Voltage | VIN | 2 | 6 | V | 4 | ||
| Output Voltage Tolerance | VOUT(S) | -2 | 2 | % | IOUT=1mA | 4 | |
| Line Regulation | 3 | 15 | mV | VOUT(S)+1V≤VIN=VEN≤6V, IOUT=1mA | 4 | ||
| Load Regulation | 10 | 20 | mV | VIN=VEN=VOUT(S)+1.0V, 1mA≤IOUT≤1A | 4 | ||
| Temperature Stability | -50 | 50 | ppm/℃ | VIN=VEN=VOUT(S)+1.0V, IOUT=1mA, -40℃≤TA≤125℃ | 4 | ||
| Reference Voltage Tolerance | 0.686 | 0.7 | 0.714 | V | 4 | ||
| Enable Turn-On Threshold | 1.6 | V | Output ON | 4 | |||
| Enable Turn-Off Threshold | 0.4 | V | Output OFF | 4 | |||
| Shutdown Pin Current | 0.1 | 0.5 | μA | 4 | |||
| Ground Current | IGND | 40 | μA | VEN=VIN, no load | 4 | ||
| Ground Current | IGND | 390 | μA | VEN=VIN, IOUT=100mA | 4 | ||
| Shutdown Current | ISHUT | 0.01 | μA | VEN=0 | 4 | ||
| Continuous Output Current | IOUT | 1 | A | VIN>2.1V | 4 | ||
| Output Current Limit | ILIM | 1.4 | A | 4 | |||
| Current Fold Back | 0.4 | 4 | |||||
| Shutdown Exit Delay Time | 0 | μs | 4 | ||||
| Max Output Discharge Resistance to GND during Shutdown | 30 | Ω | 4 | ||||
| PGOOD Rise Threshold | PGHTH | 90 | % | 4 | |||
| PGOOD Hysteresis | PGHYS | 10 | % | 4 | |||
| PGOOD Delay | PGDLY | 1 | ms | 4 | |||
| PGOOD Sink Capability | 0.05 | V | IPGOOD = 10mA | 4 | |||
| Power Supply Ripple Rejection | PSRR | 70 | dB | f=1kHz, IOUT=10mA | 4 | ||
| Power Supply Ripple Rejection | PSRR | 68 | dB | f=10kHz, IOUT=10mA | 4 | ||
| Power Supply Ripple Rejection | PSRR | 47 | dB | f=100kHz, IOUT=10mA | 4 | ||
| Power Supply Ripple Rejection | PSRR | 55 | dB | f=1MHz, IOUT=10mA | 4 | ||
| Output Noise Voltage | VOUTN | 115 | µVRMS | CBP = 1µF, VOUT=3.3V, f=10Hz ~100KHz | 4 | ||
| Thermal Shutdown Temperature | TSD | 175 | ℃ | 4 | |||
| Thermal Shutdown Hysteresis | TSD_HYS | 35 | ℃ | 4 |
CAD (KiCad official)
- Symbol:
MD7671F40PC1 - Footprint:
Package_TO_SOT_SMD:SOT-89-5 - 3D model: SOT-89-5 (KiCad packages3D, STEP)
- 3D model files:
md7671f40pc1-etched.step/md7671f40pc1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);md7671f40pc1.step/md7671f40pc1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Mingda Microelectronics datasheet (15 pp, sha256
f2697204b1696c96, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).