component
HE2031A50MPR
Public Made by Adomby adom
HEERMICR Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. 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
markdownHE2031A50MPR
HEERMICR · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89
HE2031A50MPR from HEERMICR, in a SOT-89. 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 pin of the regulator, referenced as the GND pin in the SOT89 pin table. |
| 2 | VIN | power_in | Input voltage pin; the datasheet gives a supply voltage absolute maximum of 25V (absolute maximum range 1.5V to 25V) and specifies Vin = Vout + 1V for the electrical characteristics. |
| 3 | VOUT | power_out | Regulated output voltage pin, which for the HE2031A50 (5.0V) delivers output current specified at 400mA typical with Vin-Vout=1V and output accuracy of ±1%. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HEERMICR |
| Package | SOT-89 |
| 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 accuracy (tolerance) | VOUT | -1 | 1 | % | Output voltage accuracy, printed as ±1% in Features | 1 | |
| Line Regulation | 0.05 | 0.2 | %/V | 1.6V≤Vin≤8V, Iout=100mA | 4 | ||
| Load Regulation | ΔVout | 12 | 30 | mV | Vin=Vout+1V, 1.0mA≤Iout≤100mA | 4 | |
| Output voltage Temperature Coefficient | -100 | 100 | Ppm/℃ | Iout=30mA, 0℃≤Ta≤70℃; printed ±100 | 4 | ||
| Supply Current | Iss1 | 1 | 2 | uA | 4 | ||
| Input Voltage | Vin | 25 | V | 4 | |||
| Dropout Voltage, 4.0<Vout≤5.0 at 100 mA | Vdif | 0.17 | 0.18 | V | 4.0 < Vout ≤ 5.0, Iout=100 mA | 4 | |
| Dropout Voltage, 4.0<Vout≤6.0 at 200 mA | Vdif | 0.2 | 0.22 | V | 4.0 < Vout ≤ 6.0, Iout=200 mA | 4 | |
| Dropout Voltage, 4.0<Vout≤6.0 at 400 mA | Vdif | 0.75 | 0.8 | V | 4.0 < Vout ≤ 6.0, Iout=400 mA | 4 | |
| Operating Temperature | -40 | 85 | ℃ | 4 | |||
| Storage Temperature | -40 | 125 | ℃ | 4 | |||
| Input resistor Re (ceramic input/output capacitors) | Re | 1.2 | 1.8 | Ω | Note2: ceramic Cin/Cout, Re=(1.2~1.8)Ω | 5 | |
| Output Current | Iout | 400 | mA | Vin-Vout=1V | 4 | ||
| Power Supply Rejection Ratio | PSRR | 60 | dB | F=1KHz, Vin=Vout+1V | 4 | ||
| Input capacitor Cin (recommended) | Cin | 10 | uF | Note1; electrolytic recommended | 5 | ||
| Output capacitor Cout (recommended) | Cout | 10 | uF | Note1; electrolytic recommended | 5 |
CAD (KiCad official)
- Symbol:
HE2031A50MPR - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
he2031a50mpr-etched.step/he2031a50mpr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);he2031a50mpr.step/he2031a50mpr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HEERMICR datasheet (7 pp, sha256
da0d9ffdd9bd5fee, retrieved 2026-10-18, 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).