# COS44273

**COSINE** · Gate Drivers · SOT23-5

COS44273 from COSINE, in a SOT23-5. 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 | NC | unconnected | No connection. |
| 2 | VDD | power_in | Bias supply for the MOSFET driver, rated 4.5V to 25V with respect to GND and bypassed with local ceramic capacitors (1.0 µF suggested). |
| 3 | IN | input | High-impedance TTL/CMOS compatible control input with 300 mV hysteresis between the high and low thresholds. |
| 4 | GND | power_in | Device return pin that should have a low-impedance connection to the bias supply return, since high peak current flows out of it when the capacitive load is discharged. |
| 5 | OUT | output | Low-impedance CMOS push-pull MOSFET driver output with equal-strength pull-up and pull-down devices for equal rise and fall times, with 1.5A peak current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | SOT23-5 |
| Category | Motor Driver ICs |
| Pins | 5 |

## 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 | Vs |  |  | 26 | V |  | 4 |
| Operating junction temperature |  | -40 |  | 125 | °C |  | 4 |
| Storage temperature |  | -55 |  | 150 | °C |  | 4 |
| Peak output current |  |  |  | 2 | A |  | 4 |
| DC Supply Voltage |  | 4.5 |  | 25 | V |  | 4 |
| Operating ambient temperature |  | -40 |  | 85 | °C |  | 4 |
| Operating Voltage Range | VDD | 4.5 |  | 25 | V |  | 5 |
| Input Signal High Threshold | VIH | 1.8 |  |  | V |  | 4 |
| Input Signal Low Threshold | VIL |  |  | 0.7 | V |  | 4 |
| Input Current | IIN | -1 |  | 1 | µA | 0V ≤ VIN ≤ VDD | 4 |
| Pull-Up Resistance | ROH |  |  | 2 | Ω | Source Current = 10mA | 5 |
| Pull-Down Resistance | ROL |  |  | 2 | Ω | Sink Current = -10mA | 5 |
| Continuous Output Current | IDC | -200 |  | 200 | mA | Source / Sink Current | 5 |
| Power Supply Current | ICC |  |  | 0.6 | mA | VINA=VINB=3V | 5 |
| Power Supply Current | ICC |  |  | 0.4 | mA | VINA=VINB=0V | 5 |
| Under-Voltage Lockout ON Threshold |  | 3.6 |  | 4 | V |  | 5 |
| Input Signal Hysteresis | VHYS |  | 0.3 |  | V |  | 4 |
| Peak Output Current (source) | IPK |  | 1.5 |  | A | Source Current, f=1kHz, CL=1000pF | 5 |
| Peak Output Current (sink) | IPK |  | -1.5 |  | A | Sink Current, f=1kHz, CL=1000pF | 5 |
| Under-Voltage Lockout Hysteresis |  |  | 0.5 |  | V |  | 5 |
| Rise Time | tR |  | 11 |  | ns | CL =1000pF, See Figure 3.1 | 5 |
| Fall Time | tF |  | 11 |  | ns | CL =1000pF, See Figure 3.1 | 5 |
| Turn-On Delay Time (non-inverting input) | tD1 |  | 34 |  | ns | Non-inverting Input | 5 |
| Turn-On Delay Time (inverting input) | tD1 |  | 44 |  | ns | Inverting Input | 5 |
| Turn-Off Delay Time (non-inverting input) | tD2 |  | 34 |  | ns | Non-inverting Input | 5 |
| Turn-Off Delay Time (inverting input) | tD2 |  | 44 |  | ns | Inverting Input | 5 |
| Thermal Shutdown Threshold |  |  | 150 |  | °C |  | 5 |
| Thermal Shutdown Threshold Hysteresis |  |  | 25 |  | °C |  | 5 |
| Package Thermal Resistance |  |  | 190 |  | °C/W | SOT23-5 package | 4 |

## CAD (KiCad official)

- Symbol: `COS44273`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT23-5 (KiCad packages3D, STEP)
- 3D model files: `cos44273-etched.step` / `cos44273-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cos44273.step` / `cos44273.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [COSINE datasheet](docs/cos44273-datasheet.pdf) (7 pp, sha256 `672e3f4cbf6b50b3`, retrieved 2026-11-04, 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/cos44273-datasheet.pdf)