# CL9956A36L3M

**CHIPLINK(芯联)** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3L

CL9956A36L3M from CHIPLINK(芯联), in a SOT-23-3L. 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 terminal of the regulator (接地端). |
| 2 | VOUT | power_out | Regulated output; the VOUT pin voltage is rated GND-0.3 V to VIN+0.3 V and the VOUT pin current is rated 500 mA, with IOUT limited to Pd/(VIN-VOUT) per the datasheet. |
| 3 | VIN | power_in | Supply input rated -0.3 V to +40 V absolute maximum (38 V in the electrical tables); for VIN above 20 V, the datasheet recommends electrolytic or tantalum input capacitance instead of ceramic to limit hot-plug voltage spikes. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | CHIPLINK(芯联) |
| Package | SOT-23-3L |
| 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 | VOUT | 3.529 | 3.6 | 3.672 | V | VIN =5.1V, IOUT=10mA | 6 |
| Maximum output current | IOUT (max) |  |  | 250 | mA | VIN =5.1V | 6 |
| Load regulation | ∆VOUT |  |  | 15 | mV | VIN=5.1V, 1mA≤IOUT≤100mA | 6 |
| Load regulation | ∆VOUT |  |  | 30 | mV | VIN=5.1V, 1mA≤IOUT≤200mA | 6 |
| Dropout voltage | Vdif1 |  |  | 160 | mV | IOUT =50mA | 6 |
| Dropout voltage | Vdif2 |  |  | 320 | mV | IOUT =100mA | 6 |
| Line regulation | ∆VOUT/(∆VIN*VOUT) |  |  | 0.05 | %/V | IOUT =10mA, 5.1≤VIN≤38V | 6 |
| Short-circuit current | ISHORT |  | 42 |  | mA | VIN =5.1V | 6 |
| Overcurrent protection current | ILIMIT |  | 400 |  | mA | VIN =5.1V | 6 |
| Quiescent current | IQ |  | 1.5 |  | uA |  | 6 |
| Input voltage | VIN |  |  | 38 | V |  | 6 |
| VIN pin voltage | VIN | -0.3 |  | 40 | V |  | 3 |
| VOUT pin current | IOUT |  |  | 500 | mA | Limited by Pd/(VIN-VOUT) per note (1) | 3 |
| VOUT pin voltage | VOUT | -0.3 |  |  | V | Referenced to GND; upper limit VIN+0.3 V | 3 |
| Maximum power dissipation | Pd |  |  | 300 | mW | SOT23_3L, no added PCB heat dissipation | 3 |
| Maximum power dissipation | Pd |  |  | 600 | mW | SOT23_3L, with added PCB heat dissipation (note 2) | 3 |
| Operating ambient temperature | Topr | -25 |  | 85 | C |  | 3 |
| Storage temperature | Tstg | -40 |  | 125 | C |  | 3 |
| Soldering temperature | Tsolder |  |  | 260 | C | 10s | 3 |

## CAD (KiCad official)

- Symbol: `CL9956A36L3M`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files: `cl9956a36l3m-etched.step` / `cl9956a36l3m-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cl9956a36l3m.step` / `cl9956a36l3m.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [CHIPLINK(芯联) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603127081283317760) (13 pp, sha256 `260c9346eb480c69`, retrieved 2026-10-17, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/cl9956a36l3m-datasheet.pdf)