A1205 is the upgraded version of A3134, used for applications that require pulsing VCC to conserve power.
The Allegro A1205 is a continuous‑time Hall‑effect bipolar switch designed for low‑noise, fast power‑on operation and high ESD rating. It integrates a voltage regulator, Hall‑voltage generator, small‑signal amplifier, Schmitt trigger, and NMOS output transistor, and is offered in ultra‑small SOT‑23W and SIP packages.
The document provides absolute maximum ratings, operating characteristics, thermal data, and a selection guide with part numbers and packaging options. It also includes functional block diagrams and detailed specifications for supply voltage, current, magnetic characteristics, and temperature performance.
| Supply Voltage (Veco) Max | 30 V |
|---|---|
| Reverse Supply Voltage (Vece) Max | -30 V |
| Output Current Sink (IoutSink) | 25 mA |
| Operating Supply Voltage Range | 3.8 – 24 V |
The maximum supply voltage is 30 V.
The A1205 can sink up to 25 mA of output current.