# E-L9826

**STMicroelectronics** · Power Distribution Switches · SOIC-20-300mil

E-L9826 from STMicroelectronics, in a SOIC-20-300mil. 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 | Out 6 | output | Low-side driver output 6 with continuous output voltage limited to -0.7 V to 45 V and inductive turn-off clamping typically 50 V. |
| 2 | Out 1 | output | Low-side driver output 1, controllable by SPI or by parallel input NON1, with short-circuit current limitation and thermal shutdown. |
| 3 | NRes | input | Asynchronous active-low reset input with internal pull-down of 50 kOhm to 250 kOhm, which resets all registers and disables all outputs. |
| 4 | NCS | input | Active-low SPI chip select, with the device selected while low and the rising edge latching the shift register data to the outputs. |
| 5 | GND | power_in | Device ground. |
| 6 | GND | power_in | Device ground. |
| 7 | NON1 | input | Active-low parallel control input for output 1, internally pulled up so that output 1 is off when the input is open. |
| 8 | SDO | tri_state | Serial diagnostic data output that is tri-stated when NCS is high, with propagation delay from CLK to valid data of 100 ns maximum. |
| 9 | Out 8 | output | Low-side driver output 8 with overcurrent and short-circuit shutdown, output current limited to -2 A to 1.0 A. |
| 10 | Out 3 | output | Low-side driver output 3 with overcurrent and short-circuit shutdown, output current limited to -2 A to 1.0 A. |
| 11 | Out 5 | output | Low-side driver output 5 with overcurrent and short-circuit shutdown, output current limited to -2 A to 1.0 A. |
| 12 | Out 2 | output | Low-side driver output 2, controllable by SPI or by parallel input NON2, with short-circuit current limitation and thermal shutdown. |
| 13 | SDI | input | Serial data input receiving the 8-bit SPI command, sampled on each CLK falling edge. |
| 14 | CLK | input | Serial clock input with maximum frequency of 3 MHz at 50% duty cycle. |
| 15 | GND | power_in | Device ground. |
| 16 | GND | power_in | Device ground. |
| 17 | NON2 | input | Active-low parallel control input for output 2, internally pulled up so that output 2 is off when the input is open. |
| 18 | VCC | power_in | Supply voltage, specified for operation from 4.5 V to 5.5 V with absolute maximum of 7 V. |
| 19 | Out 7 | output | Low-side driver output 7 with overcurrent and short-circuit shutdown, output current limited to -2 A to 1.0 A. |
| 20 | Out 4 | output | Low-side driver output 4 with overcurrent and short-circuit shutdown, output current limited to -2 A to 1.0 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOIC-20-300mil |
| Category | Power Supply Chip |
| Pins | 20 |

## CAD (KiCad official)

- Symbol: `E-L9826`
- Footprint: `Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm`
- 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
- 3D model files: `e-l9826-etched.step` / `e-l9826-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `e-l9826.step` / `e-l9826.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/e-l9826.pdf) (19 pp, sha256 `b8e175a066f72a96`, retrieved 2026-11-05, tier: manufacturer)
- **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/e-l9826-datasheet.pdf)