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MD8330A
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Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MD8330A
Shanghai Mingda Microelectronics · Linear Voltage Regulators (LDO) · SOT-89-3
MD8330A 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 reference pin of the regulator; the datasheet's short-circuit test condition requires the VOUT pin to be shorted to this pin with impedance below 0.1 ohm. |
| 2 | VIN | power_in | Regulator input supply pin, specified at 2.2V to 40V in the electrical characteristics with an absolute maximum rating of -0.3V to 45V. |
| 3 | VOUT | power_out | Regulated output from the internal P-channel pass MOSFET; the VOUT potential must not exceed VIN+0.3V to avoid reverse current damage from the parasitic diode. |
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 | 1.02 | ×VOUT(S) | VIN= VOUT(S)+2V, IOUT=10mA | 3 | |
| Line Regulation | 0.01 | 0.02 | %/V | VOUT(S)+2V≤VIN≤40V, IOUT=1mA | 3 | ||
| Load Regulation | VOUT2 | 20 | 40 | mV | VIN=VOUT(S)+2V, 1mA≤IOUT≤300mA, VOUT(S)≤5.3V | 3 | |
| Temperature Stability | -50 | 50 | ppm/℃ | VIN = VOUT(S)+2V, IOUT=10mA, -40℃≤Ta≤125℃ | 3 | ||
| GND Current | IGND | 1 | 1.5 | 2.5 | uA | no load, 3.0≤VOUT(S)≤5.3V | 3 |
| Input Voltage | VIN | 2.2 | 40 | V | 3 | ||
| Maximum Output Current | IOUTMAX | 300 | 350 | mA | 3 | ||
| Current Limit | ILIM | 350 | 550 | mA | VIN= VOUT(S)+2V, VOUT = 0.95×VOUT(S) | 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 | 2 | ||
| Power Dissipation | PD | 1000 | mW | SOT89-3 | 2 | ||
| Thermal Resistance Junction-to-Board | RθJB | 100 | ℃/W | SOT89-3, mounted on JEDEC standard 4-layer (2s2p) PCB | 2 | ||
| Operating Ambient Temperature | Topr | -40 | 85 | ℃ | 2 | ||
| Storage Temperature | Tstg | -40 | 125 | ℃ | 2 | ||
| ESD Protection | ESD HBM | 1500 | V | HBM | 2 |
CAD (KiCad official)
- Symbol:
MD8330A - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
md8330a-etched.step/md8330a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);md8330a.step/md8330a.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-haiku-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).
# MD8330A
**Shanghai Mingda Microelectronics** · Linear Voltage Regulators (LDO) · SOT-89-3
MD8330A 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 reference pin of the regulator; the datasheet's short-circuit test condition requires the VOUT pin to be shorted to this pin with impedance below 0.1 ohm. |
| 2 | VIN | power_in | Regulator input supply pin, specified at 2.2V to 40V in the electrical characteristics with an absolute maximum rating of -0.3V to 45V. |
| 3 | VOUT | power_out | Regulated output from the internal P-channel pass MOSFET; the VOUT potential must not exceed VIN+0.3V to avoid reverse current damage from the parasitic diode. |
## 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 | | 1.02 | ×VOUT(S) | VIN= VOUT(S)+2V, IOUT=10mA | 3 |
| Line Regulation | | | 0.01 | 0.02 | %/V | VOUT(S)+2V≤VIN≤40V, IOUT=1mA | 3 |
| Load Regulation | VOUT2 | | 20 | 40 | mV | VIN=VOUT(S)+2V, 1mA≤IOUT≤300mA, VOUT(S)≤5.3V | 3 |
| Temperature Stability | | -50 | | 50 | ppm/℃ | VIN = VOUT(S)+2V, IOUT=10mA, -40℃≤Ta≤125℃ | 3 |
| GND Current | IGND | 1 | 1.5 | 2.5 | uA | no load, 3.0≤VOUT(S)≤5.3V | 3 |
| Input Voltage | VIN | 2.2 | | 40 | V | | 3 |
| Maximum Output Current | IOUTMAX | | 300 | 350 | mA | | 3 |
| Current Limit | ILIM | | 350 | 550 | mA | VIN= VOUT(S)+2V, VOUT = 0.95×VOUT(S) | 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 | | 2 |
| Power Dissipation | PD | | | 1000 | mW | SOT89-3 | 2 |
| Thermal Resistance Junction-to-Board | RθJB | | 100 | | ℃/W | SOT89-3, mounted on JEDEC standard 4-layer (2s2p) PCB | 2 |
| Operating Ambient Temperature | Topr | -40 | | 85 | ℃ | | 2 |
| Storage Temperature | Tstg | -40 | | 125 | ℃ | | 2 |
| ESD Protection | ESD HBM | | | 1500 | V | HBM | 2 |
## CAD (KiCad official)
- Symbol: `MD8330A`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `md8330a-etched.step` / `md8330a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `md8330a.step` / `md8330a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Shanghai Mingda Microelectronics datasheet](docs/md8330a-datasheet.pdf) (10 pp, sha256 `b90bf74c0495d786`, retrieved 2026-10-24, tier: lcsc)
- **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](docs/md8330a-datasheet.pdf)