CN5816

@@ -0,0 +1,52 @@+# CN5816++**ShangHai Consonance Elec** · LED Drivers · SSOP-10-150mil++CN5816 from ShangHai Consonance Elec, in a SSOP-10-150mil. 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 | SHDN | input | Active-high chip shutdown input. Drive high (VIH >= 2.3V) to put CN5816 into shutdown; in shutdown the internal blocks including the 5V regulator are disabled and quiescent current is extremely low. Drive low (VIL <= 0.5V) for normal operation. PWM dimming is done by applying the PWM signal directly to this pin (each high-to-low transition retriggers the ~9.5ms soft start). |+| 2 | COMP | output | Loop frequency compensation pin. Connect the external frequency-compensation network (R3 series with C3) from this pin to GND. This is the transconductance error amplifier output used to tune loop dynamics. |+| 3 | OVP | input | Output over-voltage protection feedback input. When OVP rises above 1.283V the internal PWM controller shuts off the external N-channel MOSFET; the PWM resumes only after OVP falls below 1.219V. Set the OVP trip via an R1/R2 divider from VOUT: VOUT = 1.283 x (1 + R1/R2). Bias current is +/-100nA. |+| 4 | CSP | input | LED current-sense positive input. Connect to the current-inflow side of the external LED current-sense resistor RCS. The chip regulates LED current using a 120mV threshold: ILED = 120mV / RCS. |+| 5 | CSN | input | LED current-sense negative input. Connect to the current-outflow side of the external LED current-sense resistor RCS. Forms the high-side differential sense pair with CSP; regulation threshold is 120mV. |+| 6 | VIN | power_in | Input supply. Operating range 4.5V to 32V (absolute max 36V). Requires an input decoupling capacitor to GND close to the pin. |+| 7 | VCC | power_out | 5V internal LDO output. Powers internal low-voltage circuitry and the MOSFET gate driver, and can source up to 4mA to external circuitry. Requires at least 4.7uF to GND. Regulates to ~5V when VIN is 5.5V-32V; below 5.5V the output tracks lower. |+| 8 | DRV | output | Gate-drive output for the external N-channel MOSFET. High level is 5V (from VCC). Source capability 0.8A, sink capability 1.5A; typical rise/fall times 32ns/25ns into a 2nF gate. |+| 9 | GND | power_in | Ground / input supply return. Route signal ground (R2, C3, C4, C5, and this pin) separately from power ground and tie together at a single system-ground point. |+| 10 | ISW | input | Inductor current sense input. Senses the voltage across an RSW resistor from the external MOSFET source to GND for current-mode control and cycle-by-cycle over-current protection. Over-current threshold VCS(OC) is 180mV typical (162-198mV). An RC filter (R4 <= 2k with C5, ~100ns time constant) is recommended. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | ShangHai Consonance Elec |+| Package | SSOP-10-150mil |+| Category | LED-drv |+| Pins | 10 |++## Ordering variants++Same part, different packaging or reel option.++- `CN5816`++## CAD (KiCad official)++- Symbol: `CN5816`+- Footprint: `Package_SO:SSOP-10_3.9x4.9mm_P1.00mm`+- 3D model: SSOP-10-150mil (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [ShangHai Consonance Elec datasheet](docs/cn5816-datasheet.pdf) (10 pp, sha256 `12658f3a7cddd312`, 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/cn5816-datasheet.pdf)

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