# EMC2302-2-AIZL-TR

**Microchip Tech** · Motor Driver ICs · MSOP-10

EMC2302-2-AIZL-TR from Microchip Tech, in a MSOP-10. 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 | SMDATA | bidirectional | Open-drain bidirectional SMBus data pin (5V tolerant digital input/open-drain output) that requires an external pull-up resistor. |
| 2 | SMCLK | input | SMBus clock input (5V tolerant digital input) that requires an external pull-up resistor. |
| 3 | VDD | power_in | Input power supply pin for the device. |
| 4 | GND | power_in | Ground for the device. |
| 5 | PWM1 | output | Fan Speed Control 1 output, configurable as push-pull or open-drain PWM output. |
| 6 | TACH1 | input | Open-drain tachometer input (5V tolerant) for Fan Speed Control 1 feedback, requiring an external pull-up resistor. |
| 7 | PWM2 | output | Fan Speed Control 2 output, configurable as push-pull or open-drain PWM output. |
| 8 | TACH2 | input | Open-drain tachometer input (5V tolerant) for Fan Speed Control 2 feedback, requiring an external pull-up resistor. |
| 9 | CLK | bidirectional | Common 32.768 kHz external clock input for improved tach accuracy, or push-pull clock output to other fan controllers to synchronize Fan Speed Control. |
| 10 | ALERT | output | Active-low open-drain SMBus alert interrupt output (5V tolerant) indicating out-of-limit or error conditions, requiring an external pull-up resistor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | MSOP-10 |
| Category | Power Supply Chip |
| Pins | 10 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VDD | 3 | 3.3 | 3.6 | V | VDD = 3.0V to 3.6V | 4 |
| Supply Current | IDD |  | 400 | 550 | µA | EMC2302, all channels active | 4 |
| PWM Duty Cycle | DUTY | 0 |  | 100 | % |  | 4 |
| Tachometer Range | TACH | 480 |  | 16000 | RPM |  | 4 |
| Tachometer Setting Accuracy (external oscillator) | TACH | -1 | 0.5 | 1 | % | External oscillator 32.768kHz | 4 |
| Tachometer Setting Accuracy (internal oscillator) | TACH | -2 | 1 | 2 | % | Internal oscillator | 4 |
| Input High Voltage | VIH | 2 |  |  | V |  | 4 |
| Input Low Voltage | VIL |  |  | 0.8 | V |  | 4 |
| Output Low Voltage | VOL |  |  | 0.4 | V | 8 mA current sink | 4 |
| Leakage Current | ILEAK | -5 |  | 5 | µA | ALERT pin powered and unpowered, 0°C < TA < 85°C, pull-up voltage ≤ 3.6V | 4 |
| SMBus Input High Voltage | VIH | 2 |  |  | V | SMBus interface | 4 |
| SMBus Input Low Voltage | VIL |  |  | 0.8 | V | SMBus interface | 4 |
| SMBus Output Low Voltage | VOL |  |  | 0.4 | V | 4 mA current sink | 4 |
| SMBus Input High/Low Current | IIH/IIL | -5 |  | 5 | µA | Powered and unpowered, 0°C < TA < 85°C | 4 |
| SMBus Clock Frequency | fSMB | 10 |  | 400 | kHz |  | 4 |
| Spike Suppression | tSP |  |  | 50 | ns |  | 4 |
| Bus free time Start to Stop | tBUF | 1.3 |  |  | µs |  | 4 |
| Setup Time: Start | tSU:STA | 0.6 |  |  | µs |  | 4 |
| Setup Time: Stop | tSU:STP | 0.6 |  |  | µs |  | 4 |
| Data Hold Time | tHD:DAT | 0 |  |  | µs |  | 4 |
| Data Setup Time | tSU:DAT | 0.6 |  |  | µs |  | 4 |
| Clock Low Period | tLOW | 1.3 |  |  | µs |  | 4 |
| Clock High Period | tHIGH | 0.6 |  |  | µs |  | 4 |
| Clock/Data Fall Time | tFALL |  |  | 300 | ns | Min. = 20 + 0.1CLOAD ns | 4 |
| Clock/Data Rise Time | tRISE |  |  | 300 | ns | Min. = 20 + 0.1CLOAD ns | 5 |
| Capacitive Load | CLOAD |  |  | 400 | pF | Per bus line | 5 |
| Ambient Temperature Under Bias |  | -40 |  | 125 | °C |  | 3 |
| Storage Temperature |  | -55 |  | 150 | °C |  | 3 |
| Voltage on VDD with respect to GND | VDD | -0.3 |  | 4 | V |  | 3 |
| Voltage on 5V tolerant pins /V5VT_pin - VDD/ |  | 0 |  | 3.6 | V | with respect to GND (see Note 1) | 3 |
| Voltage on 5V tolerant pins with respect to GND |  | -0.3 |  | 5.5 | V |  | 3 |
| ESD Rating, All Pins, HBM |  |  |  | 2 | kV | HBM | 3 |
| PWM Resolution | PWM |  | 256 |  | Steps |  | 4 |
| SMBus Input Capacitance | CIN |  | 5 |  | pF |  | 4 |

## CAD (KiCad official)

- Symbol: `EMC2302-2-AIZL-TR`
- Footprint: `Package_SO:MSOP-10_3x3mm_P0.5mm`
- 3D model: MSOP-10 (KiCad packages3D, STEP)
- 3D model files: `emc2302-2-aizl-tr-etched.step` / `emc2302-2-aizl-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `emc2302-2-aizl-tr.step` / `emc2302-2-aizl-tr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](docs/emc2302-2-aizl-tr-datasheet.pdf) (70 pp, sha256 `6cb6c487d2a6d827`, retrieved 2026-10-24, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/emc2302-2-aizl-tr-datasheet.pdf)