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MD8325
Public Made by Adomby adom
Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), SOT-89-3. 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
markdownMD8325
Shanghai Mingda Microelectronics · Linear Voltage Regulators (LDO) · SOT-89-3
MD8325 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 | VOUT | power_out | Regulated output delivering up to 300mA (current limit 350-550mA with foldback), ±2% accuracy, needs a 1.0µF or larger output capacitor, and must not exceed VIN+0.3V. |
| 2 | VIN | power_in | Supply input accepting 2.2V to 40V (absolute maximum 45V), needs a 1.0µF or larger input capacitor placed close to the IC. |
| 3 | GND | power_in | Ground reference pin; the ground current is about 1.5µA typical at no load for 3.0V to 5.3V output versions. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | SOT-89-3 |
| Category | Power Supply Chip |
| 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(S) | 0.98 | 1 | 1.02 | ×VOUT(S) | VIN=VOUT(S)+2V, IOUT=10mA | 3 |
| Input Voltage | VIN | 2.2 | 40 | V | 3 | ||
| Line Regulation | 0.01 | 0.02 | %/V | VOUT(S)+2V≤VIN≤40V, IOUT=1mA | 3 | ||
| Load Regulation | ΔVOUT2 | 20 | 40 | mV | VIN=VOUT(S)+2V, 1mA≤IOUT≤300mA, VOUT(S)≤5.3V | 3 | |
| GND Current | IGND | 0.8 | 1.2 | 2 | uA | no load, VOUT(S)<3.0V | 3 |
| GND Current at 100mA load | IGND | 460 | uA | IOUT=100mA | 3 | ||
| Maximum Output Current | IOUTMAX | 300 | mA | 3 | |||
| Current Limit | ILIM | 350 | 550 | mA | VIN=VOUT(S)+2V, VOUT=0.95×VOUT(S) | 3 | |
| Temperature Stability | -50 | 50 | ppm/℃ | VIN=VOUT(S)+2V, IOUT=10mA, -40℃≤Ta≤125℃ | 3 | ||
| Short Circuit Current | ISHORT | 65 | mA | VIN=VOUT(S)+2.0V, VOUT=0V | 3 | ||
| Over Temperature Protection | OTP | 170 | ℃ | IOUT=1mA | 3 | ||
| Input Voltage (absolute maximum) | VIN | -0.3 | 45 | V | Ta=25℃ | 2 | |
| Output Voltage (absolute maximum) | VOUT | -0.3 | V | Vss-0.3 ~ VIN+0.3V | 2 | ||
| Power Dissipation SOT89-3 | PD | 1000 | mW | SOT89-3 | 2 | ||
| Thermal Resistance Junction-to-Board SOT89-3 | RθJB | 100 | ℃/W | SOT89-3, JEDEC 4layer (2s2p) PCB | 2 | ||
| Operating Ambient Temperature | Topr | -40 | 85 | ℃ | 2 | ||
| Storage Temperature | Tstg | -40 | 125 | ℃ | 2 | ||
| ESD Protection HBM | ESD | 1500 | V | HBM | 2 |
CAD (KiCad official)
- Symbol:
MD8325 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
md8325-etched.step/md8325-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);md8325.step/md8325.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Mingda Microelectronics datasheet (10 pp, sha256
b90bf74c0495d786, retrieved 2026-10-24, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).