component
MD7218E33SF4
Public Made by Adomby adom
Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MD7218E33SF4
Shanghai Mingda Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · ESOP-8
MD7218E33SF4 from Shanghai Mingda Microelectronics, in a ESOP-8. 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 3.3V output pin (±2%, up to 1A), requiring a low-ESR ceramic output capacitor of 2.2uF typical and not to exceed VIN+0.3V. |
| 2 | NC | unconnected | No connection. |
| 3 | NC | unconnected | No connection. |
| 4 | EN | input | Active-high enable input; VEN high level is 1.5V to 18V and low level is 0V to 0.5V. |
| 5 | GND | power_in | Ground. |
| 6 | NC | unconnected | No connection. |
| 7 | NC | unconnected | No connection. |
| 8 | VIN | power_in | Power supply input with a 2.2V to 18V operating range (absolute maximum 20V), with a 2.2uF typical input capacitor placed close to the IC. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |
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 accuracy | VOUT(S) | -2 | 2 | % | Highly accurate output voltage, printed ±2% | 1 | |
| Dropout Voltage | VDROP | 3 | 8 | mV | VOUT(S)=3.3V, IOUT=1mA | 5 | |
| Dropout Voltage | VDROP | 1000 | 1300 | mV | VOUT(S)=3.3V, IOUT=1A | 5 | |
| Line Regulation | ΔVOUT/ΔVIN | 0.01 | 0.02 | %/V | VOUT(S)+2V≤VIN≤18V, IOUT=1mA | 5 | |
| Load Regulation, VOUT(S)≤5.0V | VOUT | 80 | mV | VIN=VOUT(S)+2V, 1mA≤IOUT≤1A, VOUT(S)≤5.0V | 5 | ||
| Temperature Stability | ΔVOUT/ΔT | -50 | 50 | ppm/℃ | VIN=VOUT(S)+2V, IOUT=1mA, -40℃≤Ta≤125℃ | 5 | |
| GND Current, no load, VOUT(S)≤5.0V | IGND | 1 | 1.6 | 2 | µA | No load, VOUT(S)≤5.0V | 5 |
| Shutdown Current | ISHUT | 0.1 | 1 | µA | VIN=18V, VEN=0 | 5 | |
| Input Voltage | VIN | 2.2 | 18 | V | 5 | ||
| Maximum Output Current | IOUTMAX | 1 | A | 5 | |||
| Current Limit | ILIM | 1.5 | VIN=VOUT(S)+2V, VOUT=0.95×VOUT(S) | 5 | |||
| Power Supply Rejection Ratio, f=10Hz | PSRR | 75 | dB | f=10Hz, IOUT=10mA (measured at VOUT(S)=3.3V, VIN=5.3V) | 5 | ||
| Power Supply Rejection Ratio, f=100Hz | PSRR | 80 | dB | f=100Hz, IOUT=10mA (measured at VOUT(S)=3.3V, VIN=5.3V) | 5 | ||
| Power Supply Rejection Ratio, f=1kHz | PSRR | 65 | dB | f=1kHz, IOUT=10mA (measured at VOUT(S)=3.3V, VIN=5.3V) | 5 | ||
| Short Circuit Current | ISHORT | 30 | mA | VIN=VOUT(S)+2.0V, VOUT=0V | 5 | ||
| EN 'H' Level Voltage | VENH | 1.5 | 18 | V | 5 | ||
| EN 'L' Level Voltage | VENL | 0 | 0.5 | V | 5 | ||
| EN 'H' Level Current | IENH | -0.1 | 0.1 | µA | VIN=18V, VEN=VIN | 5 | |
| EN 'L' Level Current | IENL | -0.1 | 0.1 | µA | VIN=18V, VEN=0 | 5 | |
| Over Temperature Protection | OTP | 150 | ℃ | IOUT=1mA | 5 | ||
| Input Voltage (absolute maximum) | VIN | -0.3 | 20 | V | 4 | ||
| Output Voltage (absolute maximum, Vss-0.3 ~ VIN+0.3V) | VOUT | -0.3 | 0.3 | V | Printed as Vss-0.3 ~ VIN+0.3V; min referenced to Vss, max referenced to VIN | 4 | |
| Power Dissipation, ESOP8 | PD | 800 | mW | ESOP8 package | 4 | ||
| Operating Ambient Temperature | Topr | -40 | 85 | ℃ | 4 | ||
| Storage Temperature | Tstg | -40 | 125 | ℃ | 4 | ||
| ESD Protection, HBM | ESD HBM | 4000 | V | HBM | 4 | ||
| Thermal Resistance Junction-to-Ambient, ESOP8 | RθJA | 80 | ℃/W | ESOP8 package | 4 |
CAD (KiCad official)
- Symbol:
MD7218E33SF4 - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
md7218e33sf4-etched.step/md7218e33sf4-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);md7218e33sf4.step/md7218e33sf4.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Mingda Microelectronics datasheet (16 pp, sha256
a1c66b635dda8f58, retrieved 2026-10-20, 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).
# MD7218E33SF4
**Shanghai Mingda Microelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · ESOP-8
MD7218E33SF4 from Shanghai Mingda Microelectronics, in a ESOP-8. 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 3.3V output pin (±2%, up to 1A), requiring a low-ESR ceramic output capacitor of 2.2uF typical and not to exceed VIN+0.3V. |
| 2 | NC | unconnected | No connection. |
| 3 | NC | unconnected | No connection. |
| 4 | EN | input | Active-high enable input; VEN high level is 1.5V to 18V and low level is 0V to 0.5V. |
| 5 | GND | power_in | Ground. |
| 6 | NC | unconnected | No connection. |
| 7 | NC | unconnected | No connection. |
| 8 | VIN | power_in | Power supply input with a 2.2V to 18V operating range (absolute maximum 20V), with a 2.2uF typical input capacitor placed close to the IC. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |
## 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 accuracy | VOUT(S) | -2 | | 2 | % | Highly accurate output voltage, printed ±2% | 1 |
| Dropout Voltage | VDROP | | 3 | 8 | mV | VOUT(S)=3.3V, IOUT=1mA | 5 |
| Dropout Voltage | VDROP | | 1000 | 1300 | mV | VOUT(S)=3.3V, IOUT=1A | 5 |
| Line Regulation | ΔVOUT/ΔVIN | | 0.01 | 0.02 | %/V | VOUT(S)+2V≤VIN≤18V, IOUT=1mA | 5 |
| Load Regulation, VOUT(S)≤5.0V | VOUT | | | 80 | mV | VIN=VOUT(S)+2V, 1mA≤IOUT≤1A, VOUT(S)≤5.0V | 5 |
| Temperature Stability | ΔVOUT/ΔT | -50 | | 50 | ppm/℃ | VIN=VOUT(S)+2V, IOUT=1mA, -40℃≤Ta≤125℃ | 5 |
| GND Current, no load, VOUT(S)≤5.0V | IGND | 1 | 1.6 | 2 | µA | No load, VOUT(S)≤5.0V | 5 |
| Shutdown Current | ISHUT | | 0.1 | 1 | µA | VIN=18V, VEN=0 | 5 |
| Input Voltage | VIN | 2.2 | | 18 | V | | 5 |
| Maximum Output Current | IOUTMAX | | | 1 | A | | 5 |
| Current Limit | ILIM | | 1.5 | | | VIN=VOUT(S)+2V, VOUT=0.95×VOUT(S) | 5 |
| Power Supply Rejection Ratio, f=10Hz | PSRR | | 75 | | dB | f=10Hz, IOUT=10mA (measured at VOUT(S)=3.3V, VIN=5.3V) | 5 |
| Power Supply Rejection Ratio, f=100Hz | PSRR | | 80 | | dB | f=100Hz, IOUT=10mA (measured at VOUT(S)=3.3V, VIN=5.3V) | 5 |
| Power Supply Rejection Ratio, f=1kHz | PSRR | | 65 | | dB | f=1kHz, IOUT=10mA (measured at VOUT(S)=3.3V, VIN=5.3V) | 5 |
| Short Circuit Current | ISHORT | | 30 | | mA | VIN=VOUT(S)+2.0V, VOUT=0V | 5 |
| EN 'H' Level Voltage | VENH | 1.5 | | 18 | V | | 5 |
| EN 'L' Level Voltage | VENL | 0 | | 0.5 | V | | 5 |
| EN 'H' Level Current | IENH | -0.1 | | 0.1 | µA | VIN=18V, VEN=VIN | 5 |
| EN 'L' Level Current | IENL | -0.1 | | 0.1 | µA | VIN=18V, VEN=0 | 5 |
| Over Temperature Protection | OTP | | 150 | | ℃ | IOUT=1mA | 5 |
| Input Voltage (absolute maximum) | VIN | -0.3 | | 20 | V | | 4 |
| Output Voltage (absolute maximum, Vss-0.3 ~ VIN+0.3V) | VOUT | -0.3 | | 0.3 | V | Printed as Vss-0.3 ~ VIN+0.3V; min referenced to Vss, max referenced to VIN | 4 |
| Power Dissipation, ESOP8 | PD | | | 800 | mW | ESOP8 package | 4 |
| Operating Ambient Temperature | Topr | -40 | | 85 | ℃ | | 4 |
| Storage Temperature | Tstg | -40 | | 125 | ℃ | | 4 |
| ESD Protection, HBM | ESD HBM | | 4000 | | V | HBM | 4 |
| Thermal Resistance Junction-to-Ambient, ESOP8 | RθJA | | 80 | | ℃/W | ESOP8 package | 4 |
## CAD (KiCad official)
- Symbol: `MD7218E33SF4`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files: `md7218e33sf4-etched.step` / `md7218e33sf4-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `md7218e33sf4.step` / `md7218e33sf4.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/8590229863929323520) (16 pp, sha256 `a1c66b635dda8f58`, retrieved 2026-10-20, 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/md7218e33sf4-datasheet.pdf)