# DIO8650ECST6

**DIOO** · LED Drivers · SOT-23-6

DIO8650ECST6 from DIOO, in a SOT-23-6. 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 | CS | input | Current sense pin connected to the primary switch source, with the sense resistor between it and GND; also detects a shorted transformer or secondary, with 0.45 V current limit reference and 300 ns leading edge blanking. |
| 2 | GND | power_in | Ground pin. |
| 3 | COMP | passive | Loop compensation pin; connect an RC network between this pin and ground to stabilize the control loop. |
| 4 | ZCS | input | Inductor current zero-crossing detection input from the auxiliary winding resistor divider, also providing over voltage protection (threshold 1.5 V) and line regulation modification, with absolute maximum of -0.3 V to VIN+0.3 V. |
| 5 | VIN | power_in | Power supply pin with recommended 9.5 to 27 V range (absolute maximum 33 V), also providing output over voltage protection along with ZCS (30 V OVP). |
| 6 | DRV | output | Gate driver output connected to the gate of the primary MOSFET, clamped at 12 V with absolute maximum of -0.3 to 33 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | DIOO |
| Package | SOT-23-6 |
| Category | Display Modules / LED Drivers / Display Drivers |
| Pins | 6 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VIN, DRV voltage |  | -0.3 |  | 33 | V |  | 3 |
| Supply Current | IVIN |  |  | 15 | mA |  | 3 |
| CS, COMP voltage |  | -0.3 |  | 5 | V |  | 3 |
| Power Dissipation SOT23-6 | PD |  |  | 0.6 | W | TA = 25°C, SOT23-6 | 3 |
| Thermal Resistance junction-ambient SOT23-6 | ӨJA |  | 170 |  | °C/W | SOT23-6 | 3 |
| Thermal Resistance junction-case SOT23-6 | ӨJC |  | 130 |  | °C/W | SOT23-6 | 3 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 3 |
| Junction Temperature Range |  |  |  | 150 | °C |  | 3 |
| Lead Temperature Range |  |  |  | 260 | °C |  | 3 |
| ESD HBM |  |  |  | 2000 | V | JEDEC: JESD22-A114 | 3 |
| ESD MM |  |  |  | 200 | V | JEDEC: JESD22-A115 | 3 |
| Supply Voltage |  | 9.5 |  | 27 | V |  | 3 |
| Ambient Temperature Range | TA | -40 |  | 125 | °C |  | 3 |
| VIN turn-on threshold | VVIN,ON |  | 25.3 |  | V | VIN = 12V, TA = 25°C | 4 |
| VIN turn-off threshold | VVIN,OFF |  | 8.5 |  | V | VIN = 12V, TA = 25°C | 4 |
| VIN OVP voltage | VVIN,OVP |  | 30 |  | V | VIN = 12V, TA = 25°C | 4 |
| Start up Current | IST |  | 15 |  | µA | VVIN< VIN,OFF | 4 |
| Shunt current in OVP mode | IVIN_OVP | 1.6 | 2 | 2.5 | mA | After VVIN>V VIN,OVP, then set VIN=15V | 4 |
| Quiescent Current | IQ |  | 0.26 |  | mA | No switching | 4 |
| Operation current | IVIN |  | 0.36 |  | mA | CL=100pF,f=15kHz | 4 |
| Internal reference voltage | VREF | 0.294 | 0.3 | 0.306 | V |  | 4 |
| ZCS pin OVP voltage threshold | VZCS,OVP |  | 1.5 |  | V |  | 4 |
| Fast start up threshold | VFAST_ST |  | 0.55 |  | V |  | 4 |
| Current limit reference voltage | VCS.LMT |  | 0.45 |  | V |  | 4 |
| CC Feed forward coefficient | K2 |  | 0.1 |  |  |  | 4 |
| CC Feed forward resistor | RK2 |  | 340 |  | Ω |  | 4 |
| Max on time | TON.MAX |  | 15.7 |  | µs | COMP high clamp | 4 |
| Leading edge blanking time | TLEB |  | 300 |  | ns |  | 4 |
| Max OFF time | TOFF,MAX |  | 151 |  | µs |  | 4 |
| ZCD Blanking Time | TLEB.ZCD |  | 2 |  | µs | After turn off | 4 |
| Maximum switching frequency | fMAX |  | 115 |  | kHz |  | 4 |
| Output Clamp Voltage | VGATE_CLAMP |  | 12 |  | V | VCC=20V | 4 |
| Rising time 10% to 90% | TRISING |  | 410 |  | ns | CLOAD=1nF | 4 |
| Falling time 90% to 10% | TFALLING |  | 50 |  | ns | CLOAD=1nF | 4 |
| Thermal Shutdown Temperature | TSD |  | 150 |  | °C |  | 4 |

## CAD (KiCad official)

- Symbol: `DIO8650ECST6`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `dio8650ecst6-etched.step` / `dio8650ecst6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dio8650ecst6.step` / `dio8650ecst6.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [DIOO datasheet](docs/dio8650ecst6-datasheet.pdf) (10 pp, sha256 `09ad7a7d3f8b3bf1`, retrieved 2026-10-26, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/dio8650ecst6-datasheet.pdf)