# COS4420SR

**COSINE** · Gate Drivers · SOP-8

COS4420SR from COSINE, in a SOP-8. 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 | VDD | power_in | Bias supply for the MOSFET driver, rated 4.5V to 25V with respect to the Ground pin, and should be bypassed with local ceramic capacitors (1.0 µF suggested). |
| 2 | INPUT | input | High-impedance, TTL/CMOS compatible control input with 300 mV hysteresis; it can be driven from 1.6V to 25V and the output is held LOW if the input is unbiased or floating. |
| 3 | NC | unconnected | No connection. |
| 4 | GND | power_in | Device return pin that should have a low-impedance connection to the bias supply source return, and carries high peak current when the capacitive load is discharged. |
| 5 | GND | power_in | Device return pin that should have a low-impedance connection to the bias supply source return, and carries high peak current when the capacitive load is discharged; duplicate ground pins must both be connected for proper operation. |
| 6 | OUTPUT | output | CMOS push-pull driver output with pull-up and pull-down devices of equal strength, held LOW if the input is unbiased or floating; peak output current 6.0 A. |
| 7 | OUTPUT | output | CMOS push-pull driver output with pull-up and pull-down devices of equal strength, held LOW if the input is unbiased or floating; duplicate output pins must both be connected for proper operation. |
| 8 | VDD | power_in | Bias supply for the MOSFET driver, rated 4.5V to 25V with respect to the Ground pin; duplicate VDD pins must both be connected for proper operation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | SOP-8 |
| Category | Motor Driver ICs |
| Pins | 8 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| DC supply voltage VDD | VDD |  |  | 28 | V |  | 4 |
| Operating junction temperature |  | -40 |  | 125 | °C |  | 4 |
| Storage temperature |  | -55 |  | 150 | °C |  | 4 |
| Maximum input voltage |  | -5 |  |  | V | Referenced to GND (printed GND-5); max printed as VDD+0.3 V | 4 |
| DC Supply Voltage |  | 4.5 |  | 25 | V |  | 4 |
| Operating ambient temperature |  | -40 |  | 125 | °C |  | 4 |
| Operating Voltage Range | VDD | 4.5 |  | 25 | V |  | 5 |
| Under-Voltage Lockout ON Threshold |  | 3.7 |  | 4.1 | V |  | 5 |
| Input Signal Non-inverting High Current | IIH |  | 88 | 125 | µA | Non-inverting input current, VINX=18V | 5 |
| Input Signal Inverting Low Current | IIL |  | 88 | 125 | µA | Inverting input current, VINX=0V | 5 |
| Package Thermal Resistance (SOP8) |  |  | 155 |  | °C/W | SOP8 package | 4 |
| Input Signal High Threshold | VIH |  | 1.6 |  | V |  | 5 |
| Input Signal Low Threshold | VIL |  | 0.7 |  | V |  | 5 |
| Input Signal Hysteresis | VHYS |  | 0.3 |  | V |  | 5 |
| Input Signal Inverting High Current | IIH |  | 0.01 |  | µA | Inverting input current, VINX=18V | 5 |
| Input Signal Non-inverting Low Current | IIL |  | 0.01 |  | µA | Non-inverting input current, VINX=0V | 5 |
| Low Output Voltage | VOL |  | 0.025 |  | V | DC Test | 5 |
| Pull-Up Resistance | ROH |  | 1.25 |  | Ω | Source Current = 10mA | 5 |
| Pull-Down Resistance | ROL |  | 0.75 |  | Ω | Sink Current = -10mA | 5 |
| Peak Output Current | IPK |  | 6 |  | A | 10V≤VDD≤18V | 5 |
| Power Supply Current | ICC |  | 0.85 |  | mA | VIN=3V | 5 |
| Power Supply Current | ICC |  | 0.65 |  | mA | VIN=0V | 5 |
| Under-Voltage Lockout Hysteresis |  |  | 0.5 |  | V |  | 5 |
| Rise Time | tR |  | 14 |  | ns | CL =2500pF, See Figure 3 | 5 |
| Fall Time | tF |  | 14 |  | ns | CL =2500pF, See Figure 3 | 5 |
| Turn-On Delay Time (COS4420) | tD1 |  | 42 |  | ns | COS4420 variant | 6 |
| Turn-Off Delay Time (COS4420) | tD2 |  | 45 |  | ns | COS4420 variant | 6 |
| Thermal Shutdown Threshold |  |  | 150 |  | °C |  | 6 |
| Thermal Shutdown Threshold Hysteresis |  |  | 25 |  | °C |  | 6 |

## CAD (KiCad official)

- Symbol: `COS4420SR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `cos4420sr-etched.step` / `cos4420sr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cos4420sr.step` / `cos4420sr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [COSINE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590411717223624704) (7 pp, sha256 `e568c6c3b408d909`, retrieved 2026-10-21, tier: lcsc)
- **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/cos4420sr-datasheet.pdf)