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MD7541H

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Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MD7541H

Shanghai Mingda Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

MD7541H from Shanghai Mingda Microelectronics, in a SOT-89-3. 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 GND power_in Ground terminal of the regulator.
2 VDD power_in Power supply input; the datasheet gives a maximum input voltage of 30 V with output regulation maintained, and an absolute maximum rating of 32 V.
3 VOUT power_out Regulated output; the datasheet states VOUT must not exceed VIN + 0.3 V, as reverse current through the parasitic diode can destroy the IC.

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package SOT-89-3
Category Power Management (PMIC)
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output voltage VOUT 4.108 4.15 4.191 V VIN= 6.1V，IOUT=10mA 4
Output voltage temperature coefficient ΔVOUT/ΔTa·VOUT -100 50 100 ppm/℃ VIN=6.1V，IOUT=10mA, -40℃≤Ta≤85℃ 4
Output current IOUT 120 mA VIN= 5.6V 4
Input-output voltage difference Vdrop 5 10 mV IOUT=1mA 4
Input-output voltage difference Vdrop 60 100 mV IOUT=10mA 4
Input stability ΔVOUT1/ΔVIN·VOUT 0.05 0.2 %/V 5.1V≤VIN≤30V, IOUT=1mA 4
Load stability ΔVOUT2 60 100 mV VIN=6.1V, 1.0mA≤IOUT≤100mA 4
Quiescent current ISS 1.2 5 uA VIN=30V, no load 4
Input voltage (Vmax) Vmax 30 V 4
Output short-circuit current Ishort 180 mA Vout=0V 4
Overvoltage protection OVP 37 V IOUT=1mA 4
Input voltage VIN 32 V 2
Allowable power dissipation PD 500 mW SOT-89 package 2
Operating ambient temperature range Topr -40 85 ℃ 2
Storage ambient temperature range Tstg -40 125 ℃ 2
Input capacitor (CIN) CIN 1 µF 6
Output capacitor (CL), tantalum CL 2.2 µF tantalum capacitor 6
Output capacitor (CL), aluminum electrolytic CL 10 µF aluminum electrolytic capacitor 6
Output capacitor ESR ESR 0.5 5 Ω 7

CAD (KiCad official)

  • Symbol: MD7541H
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: md7541h-etched.step / md7541h-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md7541h.step / md7541h.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 33161ff733e26ee1, retrieved 2026-10-19, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF