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MD7671F40PC1

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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.

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MD7671F40PC1

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md7671f40pc1.step / md7671f40pc1.glb are 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, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF