component
MD7021
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Shanghai Mingda Microelectronics Supervisor And Reset ICs, SOT-23-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MD7021
Shanghai Mingda Microelectronics · Supervisor And Reset ICs · SOT-23-3L
MD7021 from Shanghai Mingda Microelectronics, in a SOT-23-3L. 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 | output | Detector output (NMOS open drain for MD7021, active low) that goes low when VDD falls below the 2.1V detect voltage; sink current is 2 mA typ. at VOUT=0.2V, and output current is limited to 10mA max. |
| 2 | GND | power_in | Ground reference (VSS) for the voltage detector. |
| 3 | VDD | power_in | Supply and voltage-sense input with 1.5V to 15V operating range for MD7021 and an absolute maximum of 18V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | SOT-23-3L |
| 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 |
|---|---|---|---|---|---|---|---|
| Hi→Lo Detectable Voltage | VDET | 2.037 | 2.1 | 2.163 | V | TA=25℃ | 4 |
| Hysteresis Width | VHYS | 0.02 | 0.05 | 0.07 | % | 4 | |
| Operating Current | IDD | 1.2 | 3 | uA | 3.1, No load | 4 | |
| Operating Voltage | VDD | 1.5 | 15 | V | 4 | ||
| Output Sink Current | IOL | 1 | 2 | mA | VDD 2, VOUT=0.2V | 4 | |
| Temperature Coefficient | △VDET/△TA | -0.5 | 0.5 | mV/℃ | 0℃<Ta<70℃ | 4 | |
| Supply Voltage | -0.3 | 18 | V | 1 | |||
| Output Current | 10 | mA | 1 | ||||
| Power Consumption | 250 | mW | SOT23-/5 package | 1 | |||
| Operating Temperature | -40 | 85 | ℃ | 1 | |||
| Storage Temperature | -50 | 125 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
MD7021 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files:
md7021-etched.step/md7021-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);md7021.step/md7021.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Mingda Microelectronics datasheet (17 pp, sha256
a73a565d183efa3d, retrieved 2026-10-19, tier: lcsc) - 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).
# MD7021
**Shanghai Mingda Microelectronics** · Supervisor And Reset ICs · SOT-23-3L
MD7021 from Shanghai Mingda Microelectronics, in a SOT-23-3L. 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 | output | Detector output (NMOS open drain for MD7021, active low) that goes low when VDD falls below the 2.1V detect voltage; sink current is 2 mA typ. at VOUT=0.2V, and output current is limited to 10mA max. |
| 2 | GND | power_in | Ground reference (VSS) for the voltage detector. |
| 3 | VDD | power_in | Supply and voltage-sense input with 1.5V to 15V operating range for MD7021 and an absolute maximum of 18V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | SOT-23-3L |
| 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 |
|---|---|---|---|---|---|---|---|
| Hi→Lo Detectable Voltage | VDET | 2.037 | 2.1 | 2.163 | V | TA=25℃ | 4 |
| Hysteresis Width | VHYS | 0.02 | 0.05 | 0.07 | % | | 4 |
| Operating Current | IDD | | 1.2 | 3 | uA | 3.1, No load | 4 |
| Operating Voltage | VDD | 1.5 | | 15 | V | | 4 |
| Output Sink Current | IOL | 1 | 2 | | mA | VDD 2, VOUT=0.2V | 4 |
| Temperature Coefficient | △VDET/△TA | -0.5 | | 0.5 | mV/℃ | 0℃<Ta<70℃ | 4 |
| Supply Voltage | | -0.3 | | 18 | V | | 1 |
| Output Current | | | | 10 | mA | | 1 |
| Power Consumption | | | | 250 | mW | SOT23-/5 package | 1 |
| Operating Temperature | | -40 | | 85 | ℃ | | 1 |
| Storage Temperature | | -50 | | 125 | ℃ | | 1 |
## CAD (KiCad official)
- Symbol: `MD7021`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files: `md7021-etched.step` / `md7021-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `md7021.step` / `md7021.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/8588918163337850880) (17 pp, sha256 `a73a565d183efa3d`, retrieved 2026-10-19, tier: lcsc)
- **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/md7021-datasheet.pdf)