component
MD53U30
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.
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MD53U30
Shanghai Mingda Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
MD53U30 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 (VSS) pin; place the output capacitor close to the VOUT and GND pins and keep the ground wiring low impedance. |
| 2 | VDD | power_in | Input supply pin (VIN); operating input voltage up to 10V (absolute maximum 12V), and the datasheet advises a capacitor at the input when source impedance is high. |
| 3 | VOUT | power_out | Regulated 3.0V output (±2%) delivering 500mA; requires a 2.2uF or larger output capacitor with 0.5-5 ohm ESR, and must not exceed VIN+0.3V. |
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 |
|---|---|---|---|---|---|---|---|
| Output voltage | VOUT | 2.94 | 3 | 3.06 | V | VIN= 4.0V，IOUT=50mA | 3 |
| Output current | IOUT | 500 | mA | VIN= 4.0V | 3 | ||
| Input-output voltage difference (dropout) | Vdrop | 10 | 14 | mV | IOUT=10 mA | 3 | |
| Input-output voltage difference (dropout) | Vdrop | 200 | 280 | mV | IOUT=200 mA | 3 | |
| Input stability | △VOUT1 | 0.05 | 0.2 | ％/V | 4.0V≤VIN≤10V IOUT=1mA | 3 | |
| Load stability | △VOUT2 | 25 | 40 | mV | VIN=4.0V 1.0mA≤IOUT≤200mA | 3 | |
| Output voltage temperature coefficient | △VOUT | -100 | 50 | 100 | Ppm/℃ | VIN=4.0V，IOUT=10mA -40℃≤Ta≤85℃ | 3 |
| Current consumption | ISS | 25 | 40 | uA | VIN= VOUT(S)+2V 无负载 | 3 | |
| Input voltage | VIN | 10 | V | 3 | |||
| Output short-circuit current | Ilim | 50 | 70 | mA | Vout=0V | 3 | |
| Input voltage (absolute maximum) | VIN | 12 | V | 2 | |||
| Allowable power dissipation | PD | 500 | Mw | SOT_89 package | 2 | ||
| Operating ambient temperature range | Topr | -40 | 85 | ℃ | 2 | ||
| Storage ambient temperature range | Tstg | -40 | 125 | ℃ | 2 | ||
| Ripple rejection | PSRR | 65 | dB | VIN=VOUT(S)+1V+1Vp_p f = 1KC Iout=50mA | 3 |
CAD (KiCad official)
- Symbol:
MD53U30 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
md53u30-etched.step/md53u30-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);md53u30.step/md53u30.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Mingda Microelectronics datasheet (11 pp, sha256
5a4556463821b84c, retrieved 2026-10-20, 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: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).
# MD53U30
**Shanghai Mingda Microelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
MD53U30 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 (VSS) pin; place the output capacitor close to the VOUT and GND pins and keep the ground wiring low impedance. |
| 2 | VDD | power_in | Input supply pin (VIN); operating input voltage up to 10V (absolute maximum 12V), and the datasheet advises a capacitor at the input when source impedance is high. |
| 3 | VOUT | power_out | Regulated 3.0V output (±2%) delivering 500mA; requires a 2.2uF or larger output capacitor with 0.5-5 ohm ESR, and must not exceed VIN+0.3V. |
## 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 |
|---|---|---|---|---|---|---|---|
| Output voltage | VOUT | 2.94 | 3 | 3.06 | V | VIN= 4.0V，IOUT=50mA | 3 |
| Output current | IOUT | 500 | | | mA | VIN= 4.0V | 3 |
| Input-output voltage difference (dropout) | Vdrop | | 10 | 14 | mV | IOUT=10 mA | 3 |
| Input-output voltage difference (dropout) | Vdrop | | 200 | 280 | mV | IOUT=200 mA | 3 |
| Input stability | △VOUT1 | | 0.05 | 0.2 | ％/V | 4.0V≤VIN≤10V IOUT=1mA | 3 |
| Load stability | △VOUT2 | | 25 | 40 | mV | VIN=4.0V 1.0mA≤IOUT≤200mA | 3 |
| Output voltage temperature coefficient | △VOUT | -100 | 50 | 100 | Ppm/℃ | VIN=4.0V，IOUT=10mA -40℃≤Ta≤85℃ | 3 |
| Current consumption | ISS | | 25 | 40 | uA | VIN= VOUT(S)+2V 无负载 | 3 |
| Input voltage | VIN | | | 10 | V | | 3 |
| Output short-circuit current | Ilim | | 50 | 70 | mA | Vout=0V | 3 |
| Input voltage (absolute maximum) | VIN | | | 12 | V | | 2 |
| Allowable power dissipation | PD | | | 500 | Mw | SOT_89 package | 2 |
| Operating ambient temperature range | Topr | -40 | | 85 | ℃ | | 2 |
| Storage ambient temperature range | Tstg | -40 | | 125 | ℃ | | 2 |
| Ripple rejection | PSRR | | 65 | | dB | VIN=VOUT(S)+1V+1Vp_p f = 1KC Iout=50mA | 3 |
## CAD (KiCad official)
- Symbol: `MD53U30`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `md53u30-etched.step` / `md53u30-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `md53u30.step` / `md53u30.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Shanghai Mingda Microelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590225643976884224) (11 pp, sha256 `5a4556463821b84c`, retrieved 2026-10-20, 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:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/md53u30-datasheet.pdf)