# CN5612

**ShangHai Consonance Elec** · LED Drivers · TO-252-5

CN5612 from ShangHai Consonance Elec, in a TO-252-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | NC | unconnected | No connect. Not internally bonded; leave floating or tie to a non-signal net. |
| 2 | VDD | power_in | Positive supply input and internal circuit power. Operating range 2.7V to 6V; absolute maximum 6.5V. |
| 3 | GND | power_in | Power ground return. The exposed backside tab of the TO-252 should be soldered to the PCB ground copper for maximum thermal performance. |
| 4 | LED | output | LED cathode connection (open-drain current sink). Sinks the regulated constant current (up to 1.2A) programmed by RISET; LED anode connects to VIN. Must be kept below 6V under all conditions. |
| 5 | ISET | input | Constant LED current program pin. Connect a resistor RISET between ISET and VDD; ILED = 910V / RISET (A, Ω). Pulling ISET to VDD (0V across RISET) fully turns off the LED current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ShangHai Consonance Elec |
| Package | TO-252-5 |
| Category | LED-drv |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `CN5612`
- Footprint: `Package_TO_SOT_SMD:TO-252-5_TabPin6`
- 3D model: TO-252-5 (KiCad packages3D, STEP)
- 3D model files: `cn5612-etched.step` / `cn5612-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cn5612.step` / `cn5612.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ShangHai Consonance Elec datasheet](docs/cn5612-datasheet.pdf) (8 pp, sha256 `0ec5b993d8b8575c`, retrieved 2026-08-17, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/cn5612-datasheet.pdf)