The Skyworks AAT1290 is a 1.5 A step‑up current regulator for flash LEDs, presented in a detailed datasheet.
The AAT1290 is a high‑efficiency boost converter designed for LED flash applications in single‑cell Li‑ion devices. It provides a regulated output up to 1.5 A, uses a 2 MHz switching frequency, and can operate from 2.7 V to 5.5 V input.
The device includes programmable safety features via the AS2Cwire serial interface, protection against over‑temperature, over‑voltage, and short‑circuit conditions, and a shutdown current below 1 µA. Recommended PCB layout guidelines and an evaluation board schematic are also provided.
| Input Voltage Range | 2.7 V to 5.5 V |
|---|---|
| Regulated Output Current | Up to 1.5 A |
| Efficiency | Up to 85 % |
| Switching Frequency | 2 MHz |
| Shutdown Current | < 1.0 µA |
| Package | 14‑pin TDFN 3 mm × 3 mm |
| Operating Temperature Range | -40 °C to +85 °C |
| Maximum Power Dissipation | 2 W |
The recommended input voltage range is 2.7 V to 5.5 V.