# CN5611

**ShangHai Consonance Elec** · LED Drivers · SOT-89-5

CN5611 from ShangHai Consonance Elec, in a SOT-89-5. 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 | VDD | power_in | Positive supply input, 2.7V to 6V. Also powers the internal control circuitry. Absolute maximum pin voltage -0.3V to 6.5V. |
| 2 | GND | power_in | Ground / power return. Should be tied to a large copper pour for thermal dissipation. |
| 3 | LED | output | LED cathode connection. Internal power transistor sinks the regulated constant current (up to 800mA) from the LED cathode to GND. Dropout voltage ~135mV at 200mA, ~410mV at 700mA. |
| 4 | ISET | input | Constant LED current setting pin. Connect a resistor R_ISET between ISET and VDD; I_LED = 910V / R_ISET (e.g. 4.55kΩ sets 200mA). 1% metal-film resistor recommended. |
| 5 | NC | unconnected | No internal connection. Leave floating or tie to GND. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ShangHai Consonance Elec |
| Package | SOT-89-5 |
| Category | LED-drv |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `CN5611`
- Footprint: `Package_TO_SOT_SMD:SOT-89-5`
- 3D model: SOT-89-5 (KiCad packages3D, STEP)
- 3D model files: `cn5611-etched.step` / `cn5611-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cn5611.step` / `cn5611.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ShangHai Consonance Elec datasheet](docs/cn5611-datasheet.pdf) (8 pp, sha256 `2fadadd407e8a63b`, 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/cn5611-datasheet.pdf)