component
MD8357
Public Made by Adomby adom
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.
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
markdownMD8357
Shanghai Mingda Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
MD8357 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 of the LDO, rated for up to 300 mA; the datasheet forbids VOUT from exceeding VIN+0.3 V because reverse current through the parasitic diode can destroy the IC. |
| 2 | VIN | power_in | Input supply pin with a recommended operating range of 2.2 V to 40 V (absolute maximum -0.3 V to 45 V), with a 1.0 µF input capacitor recommended close to the pin. |
| 3 | GND | power_in | Ground reference pin for the regulator; the datasheet gives no separate electrical limit for this pin. |
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 |
|---|---|---|---|---|---|---|---|
| Input Voltage (absolute maximum) | VIN | -0.3 | 45 | V | 2 | ||
| Power Dissipation, SOT89-3 | PD | 1000 | mW | SOT89-3 package | 2 | ||
| Storage Temperature | Tstg | -40 | 125 | ℃ | 2 | ||
| ESD Protection HBM | ESD HBM | 1500 | V | HBM | 2 | ||
| Operating Ambient Temperature | Topr | -40 | 85 | ℃ | 2 | ||
| Thermal Resistance, junction to board, SOT89-3 | RθJB | 100 | ℃/W | Mounted on JEDEC standard 4layer (2s2p) PCB test board (note 1) | 2 | ||
| Input Voltage | VIN | 2.2 | 40 | V | 3 | ||
| Output Voltage accuracy (MD8357, 5.7V nominal) | VOUT(S) | 0.98 | 1.02 | ×VOUT(S) | VIN=VOUT(S)+2V, IOUT=10mA; printed as multiples of VOUT(S) (5.7V nominal for MD8357) | 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 | |
| Line Regulation | ΔVOUT/ΔVIN | 0.01 | 0.02 | ％/V | VOUT(S)+2V≤VIN≤40V, IOUT=1mA | 3 | |
| Load Regulation (VOUT(S)>5.3V) | VOUT2 | 50 | 80 | 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 (VOUT(S)>5.3V) | IGND | 1.5 | 2.3 | 3.5 | uA | no load, VOUT(S)>5.3V | 3 |
CAD (KiCad official)
- Symbol:
MD8357 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
md8357-etched.step/md8357-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);md8357.step/md8357.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 2026-10-20, 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).