# AT8236-MS

**MSKSEMI** · Brushed DC Motor Drivers · ESOP-8

AT8236-MS from MSKSEMI, in a ESOP-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 | GND | power_in | Logic ground; connect to board ground. |
| 2 | IN2 | input | Logic input that controls the H-bridge output, with a 100 kΩ internal pulldown to GND. |
| 3 | IN1 | input | Logic input that controls the H-bridge output, with a 100 kΩ internal pulldown to GND; logic inputs are rated to 6 V absolute maximum. |
| 4 | VREF | power_in | Analog reference input; apply a voltage between 0.3 V and 5 V to set the current-regulation level. |
| 5 | VM | power_in | Motor and device supply, 6.5 V to 40 V; connect a 0.1 µF bypass capacitor to ground plus sufficient bulk capacitance rated for the VM voltage. |
| 6 | OUT1 | output | H-bridge output; connect directly to the motor or other inductive load. |
| 7 | ISEN | passive | High-current ground path; connect to a low-value, high-power sense resistor to ground for current regulation, or directly to ground if current regulation is not used. |
| 8 | OUT2 | output | H-bridge output; connect directly to the motor or other inductive load. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | ESOP-8 |
| Category | Motor Driver ICs |
| Pins | 9 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VM operating voltage | VM | 6.5 |  | 40 | V |  | 5 |
| VM operating supply current | IVM |  | 2 | 10 | mA | VM = 24V | 5 |
| VM sleep current | IVMSLEEP |  |  | 15 | µA | VM = 24V | 5 |
| Turn-on time | tON |  |  | 45 | µs | VM > VUVLO with IN1 or IN2 high | 5 |
| Input logic low voltage | VIL |  |  | 0.5 | V |  | 5 |
| Input logic high voltage | VIH | 2 |  |  | V |  | 5 |
| Input logic hysteresis | VHYS |  | 0.2 |  | V |  | 5 |
| Input logic low current | IIL | -1 |  | 1 | μA | VIN = 0V | 5 |
| Input logic high current | IIH |  |  | 33 | μA | VIN = 3.3V | 5 |
| Pulldown resistance | RPD |  | 100 |  | kΩ | to GND | 5 |
| Propagation delay, Inx H to OUTx H change | tPD |  |  | 0.2 | μs | Inx H to OUTx H change | 5 |
| Propagation delay, Inx L to OUTx L change | tPD |  |  | 1 | μs | Inx L to OUTx L change | 5 |
| Time to sleep | tsleep |  | 1.2 | 2 | ms | Inputs low to sleep | 5 |
| High-side FET on resistance | RDS(ON)_High |  | 260 | 300 | mΩ | VM = 24 V, I = 1A, fPWM = 25 kHz | 5 |
| Low-side FET on resistance | RDS(ON)_Low |  | 260 | 300 | mΩ | VM = 24 V, I = 1A, fPWM = 25kHz | 5 |
| Output dead time | tDEAD |  | 200 |  | ns |  | 5 |
| ISEN gain | AV | 9.4 | 10 | 10.4 | V/V | VREF = 2.5V | 5 |
| PWM off-time | tOFF |  | 30 |  | µs |  | 5 |
| PWM blanking time | tBLANK |  | 3.2 |  | µs |  | 5 |
| VM undervoltage lockout, falling threshold | VUVLO_fall |  | 5.8 |  | V | VM falls until UVLO triggers | 5 |
| VM undervoltage lockout, rising threshold | VUVLO_rise |  | 6 |  | V | VM rises until operation recovers | 5 |
| VM undervoltage hysteresis | VUV_HYS |  | 200 |  | mV | Rising to falling threshold | 5 |
| Overcurrent protection trip level | IOCP |  | 4.2 |  | A |  | 5 |
| Overcurrent deglitch time | tOCP |  | 2.5 |  | μs |  | 5 |
| Overcurrent retry time | tRETRY |  | 4 |  | ms |  | 5 |
| Thermal shutdown temperature | TSD |  | 170 |  | °C |  | 6 |
| Thermal shutdown hysteresis | THYS |  | 40 |  | °C |  | 6 |
| Power supply voltage (VM) |  | -0.3 |  | 45 | V |  | 3 |
| Logic input voltage |  | -0.3 |  | 6 | V | IN1, IN2 | 3 |
| Reference input pin voltage |  | -0.3 |  | 6 | V | VREF | 3 |
| Continuous phase node pin voltage |  | -0.7 |  |  | V | OUT1, OUT2; maximum is VM+0.7 V as printed | 3 |
| Current sense input pin voltage |  | -0.5 |  | 1 | V | ISEN | 3 |
| Output current |  | 0 |  | 3.5 | A | 100% duty cycle | 3 |
| Operating junction temperature | TJ | -40 |  | 150 | °C |  | 3 |
| Storage temperature |  | -65 |  | 150 | °C |  | 3 |
| ESD Human Body Model, all pins | VESD | -2000 |  | 2000 | V | JEDEC specification JS-001 | 4 |
| VM power supply voltage range | VM | 6.5 |  | 40 | V |  | 4 |
| Operating junction temperature range | TJ | -40 |  | 125 | °C |  | 4 |
| Analog reference input voltage | VREF | 0.3 |  | 5 | V | Pin function: apply a voltage between 0.3 V and 5 V | 4 |
| Thermal resistance (junction to ambient) |  |  | 250 |  | °C/W | Note 2: TJ = TA + (PD) x (250°C/W) | 6 |

## CAD (KiCad official)

- Symbol: `AT8236-MS`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files: `at8236-ms-etched.step` / `at8236-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `at8236-ms.step` / `at8236-ms.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603382896250277888) (10 pp, sha256 `c7cf436ae7719e76`, retrieved 2026-10-17, 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/at8236-ms-datasheet.pdf)