# HE9073A15M5R

**HEERMICR** · Linear Voltage Regulators (LDO) · SOT-23-5

HE9073A15M5R from HEERMICR, in a SOT-23-5. 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 | VIN | power_in | Input supply pin, operating range 2.0V to 7.0V (absolute maximum VSS+9.0V), bypass with a CIN capacitor to GND placed close to the IC. |
| 2 | GND | power_in | Ground pin, reference (VSS) for the regulator. |
| 3 | CE | input | Enable (EN/CE) input that shuts down the IC internally, logic-high at least 1.2V enables and logic-low at most 0.4V (at VIN=5.0V), and should be driven to VIN or VSS, with a maximum of VIN+0.3V. |
| 4 | NC | unconnected | No-connect pin with no internal function stated in the datasheet. |
| 5 | VOUT | power_out | Regulated 1.5V output (±1% accuracy) for this part number, up to 500mA output current, with an output capacitor of at least 4.7µF placed close to the pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HEERMICR |
| Package | SOT-23-5 |
| Category | Power Management ICs |
| Pins | 5 |

## 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 | VIN | 2 |  | 7 | V |  | 5 |
| Quiescent Current | IQ |  | 0.3 | 0.7 | μA | VIN > VOUT, EN=VIN, No load | 5 |
| Output Voltage Accuracy | VOUT | -1 |  | 1 | % | IOUT=1mA | 5 |
| Shutdown Ground Current | ISD |  |  | 0.1 | μA | VEN=0V | 5 |
| VOUT Shutdown Leakage Current | ILEAK |  |  | 0.1 | μA | VOUT=0V | 5 |
| Dropout Voltage | VDROP |  | 100 | 120 | mV | IOUT=100mA, VOUT=3.3V | 5 |
| Dropout Voltage | VDROP |  | 200 | 250 | mV | IOUT=200mA, VOUT=3.3V | 5 |
| Load Regulation | ΔLOAD |  | 20 | 30 | mV | VIN=VOUT+1V, 1mA≤IOUT≤300mA | 5 |
| Line Regulation | ΔLINE |  | 0.1 | 0.15 | %/V | IOUT=1mA, VOUTNOM+0.5V≤VIN≤7V | 5 |
| EN Threshold Voltage, Logic-High | VIH | 1.2 |  |  | V | VIN=5.0V, IOUT=1mA | 5 |
| EN Threshold Voltage, Logic-Low | VIL |  |  | 0.4 | V | VIN=5.0V | 5 |
| Output Current | IOUT_MAX |  | 500 |  | mA | VIN - VOUT=0.5V | 5 |
| Current Limit | ILIMIT |  | 550 |  | mA | VIN=5V | 5 |
| Power Supply Rejection Ratio | PSRR |  | 65 |  | dB | IOUT=100mA, f=10KHz | 5 |
| Power Supply Rejection Ratio | PSRR |  | 70 |  | dB | IOUT=100mA, f=1KHz | 5 |
| Short/Start Load Current | ISHORT |  | 90 |  | mA | RL=1 | 5 |
| Output Noise Voltage | eNO |  | 100 |  | μVRMS | 10Hz to 100kHz, COUT=1µF | 5 |
| Thermal Shutdown Temperature | TSD |  | 160 |  | ℃ |  | 5 |
| Thermal Shutdown Hysteresis | ΔTSD |  | 20 |  | ℃ |  | 5 |
| Input Voltage (Absolute Maximum) | VIN | -0.3 |  | 9 | V | VSS -0.3 to VSS+9.0 | 4 |
| Output Current (Absolute Maximum) | IOUT |  |  | 550 | mA |  | 4 |
| Power Dissipation SOT23-5 | Pd |  |  | 450 | mW | SOT23-5 | 4 |
| Operating Temperature | Topr | -40 |  | 85 | ℃ |  | 4 |
| Storage Temperature | Tstg | -40 |  | 125 | ℃ |  | 4 |
| Soldering Temperature | Tsolder |  |  | 260 | ℃ | 260℃, 10s | 4 |
| ESD HBM | V(ESD-HBM) | -4000 |  | 4000 | V | ANSI/ESDA/JEDEC JS-001-2014, Class 2 | 4 |
| ESD CDM | V(ESD-CDM) | -200 |  | 200 | V | ANSI/ESDA/JEDEC JS-002-2014, Class C0b | 4 |
| Latch-up Current | ILATCH-UP | -150 |  | 150 | mA | JEDEC STANDARD NO.78E, Class I | 4 |
| Supply voltage at VIN | VIN | 2 |  | 7 | V |  | 4 |
| Operating junction temperature range | Tj | -40 |  | 125 | °C |  | 4 |
| Operating free air temperature range | TA | -25 |  | 85 | °C |  | 4 |
| Thermal Resistance Junction-to-ambient SOT23-5 | RθJA |  |  | 220 | ℃/W | SOT23-5, JESD 51-7 | 4 |

## CAD (KiCad official)

- Symbol: `HE9073A15M5R`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `he9073a15m5r-etched.step` / `he9073a15m5r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `he9073a15m5r.step` / `he9073a15m5r.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [HEERMICR datasheet](docs/he9073a15m5r-datasheet.pdf) (12 pp, sha256 `27a01576a32d0f6f`, retrieved 2026-10-22, 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/he9073a15m5r-datasheet.pdf)