AH266 is an integrated Hall sensor with output drivers designed for electronic commutation of brush-less DC motor applications. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and complementary darlington open-collector drivers for sinking large current loads. An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range. If a magnetic flux density (B) is larger than operate point (Bop), DO turn on (low) and DOB turn off (high). AH266 has good anti-interference ability, which can realize high-precision control of brushless DC motor.
The AH266 is an integrated high‑voltage Hall‑effect latch designed for electronic commutation of brush‑less DC motors and fans. It includes an on‑chip Hall plate, comparator, Schmitt trigger, and darlington open‑collector drivers, offering reverse‑polarity protection and Zener output protection.
The datasheet details absolute maximum ratings, electrical and magnetic specifications, typical application circuits, and package dimensions for the SIP‑4L form factor, along with ordering and marking information.
| Operating voltage | 4 V ~ 28 V |
|---|---|
| Continuous output current | 400 mA (25 °C) |
| Zener breakdown voltage (typical) | 62 V |
| Maximum supply voltage | 28 V |
| Operating temperature range | -20 °C ~ +85 °C |
| Power dissipation | 550 mW |
| Magnetic operate point (typical) | 10 Gauss |
| Magnetic release point (typical) | -10 Gauss |
| Package type | SIP‑4L |
The AH266 operates from 4 V up to 28 V.
It can continuously source 400 mA at 25 °C.
The device is supplied in a SIP‑4L (4‑pin) package.
The typical Zener breakdown voltage is 62 V.