The APA18 is a single-output point-of-load regulator from Astec that features high current output, high efficiency, low noise, and a wide input voltage range. It is suitable for a variety of applications, including power conversion and battery charging.
The APA18 is a compact, open‑frame SIP module designed for point‑of‑load applications. It delivers up to 75 W of power, supports a single output, and offers features such as high current slew rate, low output ripple, and programmable output voltage.
Key specifications include an input range of 10.0 V‑14.0 V, output voltage range of 0.75 V‑5.5 V, up to 18 A output current, typical efficiency of 92 % at 3.3 V, and operation from –40 °C to +85 °C. Ordering information and pin‑out drawings are provided for both vertical and horizontal mounting configurations.
| Total Power | 75 W |
|---|---|
| Input Voltage Range | 10.0 V to 14.0 V |
| Maximum Output Current | 18 A |
| Typical Efficiency (3.3 V) | 92 % |
| Operating Temperature | -40 °C to +85 °C |
| Storage Temperature | -55 °C to +125 °C |
| MTBF | >1 million hours |
| Current Slew Rate | up to 1 A/µs |
| Isolation | Non‑isolated |
| Enable Function | TTL compatible positive enable |
The APA18 accepts an input voltage from 10.0 V to 14.0 V.
It can deliver up to 18 A of output current with a total power limited to 75 W.
Typical efficiency is about 92 % at 3.3 V output.
The module operates from –40 °C to +85 °C ambient temperature.