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MD8350A
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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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MD8350A
Shanghai Mingda Microelectronics · Linear Voltage Regulators (LDO) · SOT-89-3
MD8350A 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 for the regulator; the datasheet gives no specific electrical limit for this pin. |
| 2 | VIN | power_in | Input supply pin, with an input voltage range of 2.2V to 40V as stated in the electrical characteristics. |
| 3 | VOUT | power_out | Regulated output pin, which must not be driven above VIN+0.3V according to the operational explanation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | SOT-89-3 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Voltage | VIN | 2.2 | 40 | V | 3 | ||
| Line Regulation | ΔVOUT/ΔVIN | 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 |
| Maximum Output Current | IOUTMAX | 300 | 350 | mA | 3 | ||
| Current Limit | ILIM | 350 | 550 | mA | VIN= VOUT(S)+2V, VOUT = 0.95×VOUT(S) | 3 | |
| Input Voltage (absolute maximum) | VIN | -0.3 | 45 | V | 2 | ||
| Power Dissipation | PD | 500 | mW | SOT89-3 | 2 | ||
| Thermal Resistance Junction-to-Board | RθJB | 100 | ℃/W | SOT89-3, mounted on JEDEC standard 4layer (2s2p) PCB test board | 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:
MD8350A - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
md8350a-etched.step/md8350a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);md8350a.step/md8350a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Mingda Microelectronics datasheet (10 pp, sha256
ab50cbee7842df68, retrieved 2026-11-05, 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).
# MD8350A
**Shanghai Mingda Microelectronics** · Linear Voltage Regulators (LDO) · SOT-89-3
MD8350A 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 for the regulator; the datasheet gives no specific electrical limit for this pin. |
| 2 | VIN | power_in | Input supply pin, with an input voltage range of 2.2V to 40V as stated in the electrical characteristics. |
| 3 | VOUT | power_out | Regulated output pin, which must not be driven above VIN+0.3V according to the operational explanation. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | SOT-89-3 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Voltage | VIN | 2.2 | | 40 | V | | 3 |
| Line Regulation | ΔVOUT/ΔVIN | | 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 |
| Maximum Output Current | IOUTMAX | 300 | | 350 | mA | | 3 |
| Current Limit | ILIM | 350 | | 550 | mA | VIN= VOUT(S)+2V, VOUT = 0.95×VOUT(S) | 3 |
| Input Voltage (absolute maximum) | VIN | -0.3 | | 45 | V | | 2 |
| Power Dissipation | PD | | | 500 | mW | SOT89-3 | 2 |
| Thermal Resistance Junction-to-Board | RθJB | | | 100 | ℃/W | SOT89-3, mounted on JEDEC standard 4layer (2s2p) PCB test board | 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: `MD8350A`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `md8350a-etched.step` / `md8350a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `md8350a.step` / `md8350a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Shanghai Mingda Microelectronics datasheet](docs/md8350a-datasheet.pdf) (10 pp, sha256 `ab50cbee7842df68`, retrieved 2026-11-05, 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/md8350a-datasheet.pdf)