# AL1788W6-7

**Diodes Incorporated** · AC-DC Controllers & Regulators · SOT-26

AL1788W6-7 from Diodes Incorporated, in a SOT-26. 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 | CS | input | Primary current sensing input; the cycle-by-cycle OCP turns the switch off when CS reaches VCS_OCP (0.5 V), and the absolute maximum voltage at CS is -0.3 to 7 V. |
| 2 | GND | power_in | Ground reference for the controller; all voltages in the absolute maximum ratings are measured with respect to GND. |
| 3 | COMP | passive | Loop compensation pin with an absolute maximum voltage of -0.3 to 7 V and a COMP protection voltage of 3.5 V. |
| 4 | FB | input | Voltage sensing feedback input for constant-voltage regulation at VFB_CV of 1.15 to 1.25 V (1.2 V typ), with OVP at 1.35 V typ and an absolute maximum voltage of -0.3 to 7 V. |
| 5 | VCC | power_in | Power supply pin with a recommended input voltage of 9.0 to 25 V and a VCC overvoltage protection threshold of 30 V. |
| 6 | OUT | output | Gate driver output for the external MOSFET, with an output clamp voltage of 12 to 15 V at VCC = 18 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-26 |
| Category | Power Management ICs |
| Pins | 6 |

## 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 at VCC | VCC | 9 |  | 25 | V |  | 4 |
| Operating Junction Temperature | TJ | -40 |  | 125 | °C |  | 4 |
| Input Voltage | VIN | -0.3 |  | 30 | V |  | 4 |
| Voltage at CS | VCS | -0.3 |  | 7 | V |  | 4 |
| Voltage at FB | VFB | -0.3 |  | 7 | V |  | 4 |
| Voltage at COMP | VCOMP | -0.3 |  | 7 | V |  | 4 |
| Junction Temperature | TJ | -40 |  | 150 | °C |  | 4 |
| Storage Temperature Range | TST | -65 |  | 150 | °C |  | 4 |
| Lead Temperature (Soldering) | TLEAD |  |  | 260 | °C | Soldering, 10 sec | 4 |
| Power Dissipation | PD |  |  | 0.7 | W | Note 5 | 4 |
| Human Body Model ESD Protection | HBM |  |  | 2000 | V |  | 4 |
| Charged Device Model ESD Protection | CDM |  |  | 1000 | V |  | 4 |
| Thermal Resistance Junction-to-Ambient | θJA |  |  | 160 | °C/W | Note 5 | 4 |
| Thermal Resistance Junction-to-Case | θJC |  |  | 36 | °C/W | Note 5 | 4 |
| Minimal Operating Voltage After Turn On | VOPR_MIN | 7 |  | 8.5 | V |  | 5 |
| Output Clamp Voltage | VOUT_CLAMP | 12 | 13.5 | 15 | V | VCC =18V | 5 |
| Output Low Level | VOL |  |  | 1 | V | IGD_SINK=20mA, VCC =12V | 5 |
| FB CV Threshold | VFB_CV | 1.15 | 1.2 | 1.25 | V |  | 5 |

## CAD (KiCad official)

- Symbol: `AL1788W6-7`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-26 (KiCad packages3D, STEP)
- 3D model files: `al1788w6-7-etched.step` / `al1788w6-7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `al1788w6-7.step` / `al1788w6-7.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/AL1788W6-7.pdf) (13 pp, sha256 `8929e06105c82d11`, retrieved 2026-11-05, 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/al1788w6-7-datasheet.pdf)