# HE9810M6R

**HEERMICR** · DC-DC Converters · SOT-23-6

HE9810M6R from HEERMICR, in a SOT-23-6. 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 | SW | output | Power switch output and drain of the internal MOSFET; connect the power inductor and output rectifier to SW, which can swing between GND and 24V. |
| 2 | GND | power_in | Ground pin for the regulator. |
| 3 | FB | input | Feedback input with a 0.6V feedback voltage; connect a resistor divider to FB to set the output voltage. |
| 4 | CE | input | Regulator on/off control input where high turns the converter on and low turns it off; when not used, connect it to the input supply for automatic startup. |
| 5 | VDD | power_in | Input supply pin that must be locally bypassed; the application note says it may connect to VOUT or VIN and recommends VOUT when VIN is below 5V. |
| 6 | RS | passive | Current-limit setting resistor pin, where RS = 25K/IL(A) sets the peak inductor current; RS must not be left floating and should be connected to GND if external current limiting is not used. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HEERMICR |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `HE9810M6R`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `he9810m6r-etched.step` / `he9810m6r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `he9810m6r.step` / `he9810m6r.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HEERMICR datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589836707614269440) (6 pp, sha256 `1f553de63fc9eb51`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/he9810m6r-datasheet.pdf)