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MD7330

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Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-92-3. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

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Contents

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MD7330

Shanghai Mingda Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-92-3

MD7330 from Shanghai Mingda Microelectronics, in a TO-92-3. 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 (VSS) pin; keep its wiring low-impedance and place the output capacitor (2.2 µF or more) close to the VOUT-VSS pins.
2 VIN power_in Positive supply input (labelled VDD in the package drawing); absolute maximum 18 V, 15 V in the MD7330 electrical table, with an input capacitor of 1.0 µF or more.
3 VOUT power_out Regulated 3.0 V output (±2%) delivering 300 mA at VIN=5 V, short-circuit current 15 to 50 mA, needs 2.2 µF or more output capacitor and must not exceed VIN+0.3 V.

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package TO-92-3
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 2.94 3 3.06 V VIN= 5V，IOUT=10mA 3
Input-output voltage difference (dropout) Vdrop 5 mV IOUT=1 mA 3
Input-output voltage difference (dropout) Vdrop 250 mV IOUT=100 mA 3
Input stability (line regulation) ΔVOUT1/ΔVIN·VOUT 0.05 0.2 ％/V 4V≤VIN≤15V, IOUT=1mA 3
Load stability (load regulation) ΔVOUT2 60 100 mV VIN=5V, 1.0mA≤IOUT≤300mA 3
Output voltage temperature coefficient ΔVOUT/ΔTa·VOUT -100 50 100 Ppm/℃ VIN=5V，IOUT=10mA, -40℃≤Ta≤85℃ 3
Supply current ISS1 1.2 2.5 uA VIN=15V, no load 3
Input voltage VIN 15 V 3
Output short-circuit current Ilim 15 50 mA Vout=0V 3
Output current IOUT 300 mA VIN= 5V 3
Input voltage VIN 18 V 2
Allowable power dissipation (TO_92) PD 250 Mw TO_92 package, Ta=25℃ unless otherwise noted 2
Operating ambient temperature range Topr -40 85 ℃ 2
Storage ambient temperature range Tstg -40 125 ℃ 2
Input capacitor (CIN) CIN 1 µF Input capacitor, 1.0 µF or more 6
Output capacitor (CL) CL 2.2 µF Output capacitor, 2.2 µF or more (tantalum) 6

CAD (KiCad official)

  • Symbol: MD7330
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92-3 (KiCad packages3D, STEP)
  • 3D model files: md7330-etched.step / md7330-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md7330.step / md7330.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Shanghai Mingda Microelectronics datasheet (13 pp, sha256 f5efc29fea38182c, retrieved 2026-10-21, 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: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF