# AL3022MTR-G1

**Diodes Incorporated** · LED Drivers · SO-8

AL3022MTR-G1 from Diodes Incorporated, in a SO-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 | VIN | power_in | Supply input pin; a capacitor between VIN and GND keeps the DC input voltage constant, with VIN recommended operating range 4 V to 18 V and absolute maximum -0.3 to 20 V. |
| 2 | OUT | output | Gate driver pin connected to the external MOSFET gate to turn it on and off, with OUT pin voltage rated at 20 V maximum. |
| 3 | GND | power_in | Ground pin. |
| 4 | CS | input | Over-current protection pin connected to the current-sense resistor; if the CS voltage exceeds 0.33 V (typical threshold), the output is turned off immediately until the next cycle begins. |
| 5 | FB | input | Feedback pin connected to an external resistor divider that programs the system output voltage; the feedback voltage is 0.2 V typical (0.194 V to 0.206 V), with FB pin voltage absolute maximum -0.3 to +5.5 V. |
| 6 | COMP | output | Compensation pin, the output of the internal error amplifier, which is forced to low when VIN is below 3.6 V. |
| 7 | OVP | input | Overvoltage detection pin; the controller latches off the output when the OVP pin senses more than 1.55 V (typical), and MOSFET drive turns off if OVP is below 0.1 V to protect against VOUT short to GND. |
| 8 | EN | input | Enable and dimming pin; the IC is disabled below 0.3 V and enabled above 2.6 V, supports PWM dimming with an external signal above 100 Hz at 1% to 90% duty cycle, and supports analog dimming with a DC signal from 0.8 V to 2.4 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SO-8 |
| Category | Nixie Tube Driver/LED Driver |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Voltage | VIN | -0.3 |  | 20 | V |  | 3 |
| EN Pin Voltage | VEN | -0.3 |  |  | V | Printed as -0.3 to VIN +0.3 V; upper limit is VIN +0.3 V | 3 |
| OUT Pin Voltage | VGATE |  |  | 20 | V |  | 3 |
| OVP Pin Voltage | VOVP |  |  | 7 | V |  | 3 |
| FB Pin Voltage | VFB | -0.3 |  | 5.5 | V |  | 3 |
| Operating Junction Temperature | TJ |  |  | 150 | °C |  | 3 |
| Storage Temperature Range | TSTG | -65 |  | 150 | °C |  | 3 |
| Lead Temperature (Soldering) | TLEAD |  |  | 260 | °C | Soldering, 10sec | 3 |
| ESD (Machine Model) |  |  |  | 600 | V | Machine Model | 3 |
| ESD (Human Body Model) |  |  |  | 4000 | V | Human Body Model | 3 |
| Input Voltage | VIN | 4 |  | 18 | V |  | 3 |
| Operating Ambient Temperature | TA | -40 |  | 85 | °C |  | 3 |
| Input Voltage | VIN | 4 |  | 18 | V |  | 4 |
| Input UVLO Threshold | VUVLO | 3.6 | 3.8 | 4 | V | VIN Rising | 4 |
| Input UVLO Hysteresis | VHYS | 100 | 200 | 300 | mV |  | 4 |
| Over Voltage Threshold |  | 1.45 | 1.55 | 1.65 | V |  | 4 |
| EN Pin Threshold (OFF) | VEN-OFF |  |  | 0.3 | V |  | 4 |
| EN Pin Threshold (ON) | VEN-ON | 2.6 |  |  | V |  | 4 |
| Feedback Voltage | VFB | 0.194 | 0.2 | 0.206 | V |  | 4 |
| Feedback Bias Current | IFB |  | 35 | 100 | nA |  | 4 |
| Line Regulation | ∆VFB |  | 2 | 20 | mV | VIN = 4.5V to 18V | 4 |
| Oscillator Frequency | fOSC | 110 | 140 | 170 | KHz |  | 4 |
| Max. Duty Cycle | DMAX | 90 | 95 | 99 | % |  | 4 |
| Thermal Resistance (Junction to Ambient) | θJA |  | 105 |  | °C/W |  | 3 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | Abs |  |, ESD (Human Body Model) 4000 V Note 4. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and | 3 |

## CAD (KiCad official)

- Symbol: `AL3022MTR-G1`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files: `al3022mtr-g1-etched.step` / `al3022mtr-g1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `al3022mtr-g1.step` / `al3022mtr-g1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/AL3022MTR-G1.pdf) (12 pp, sha256 `c70ca755534b8e70`, retrieved 2026-10-30, tier: manufacturer)
- **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/al3022mtr-g1-datasheet.pdf)