Key facts
- Brand
- Allegro
- Model
- A1101
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-08
Start here
ALLEGRO MICROSYSTEMS A1101 A1102 A1103 A1104 A1106 Continuous-Time Switch Family
The Allegro A1101‑A1106 family are Hall‑effect continuous‑time switches that integrate a voltage regulator, Hall‑voltage generator, small‑signal amplifier, Schmitt trigger and NMOS output transistor on a single silicon chip. They operate from 3.8 V to 24 V and provide fast power‑on times, low noise, and robust protection for automotive and industrial motor‑commutation applications.
The devices are offered in ultra‑small 3‑pin SOT23W (LH) and 3‑pin SIP (UA) packages, both lead‑free with matte‑tin plated leadframes. Detailed electrical, magnetic, and thermal characteristics are provided, along with a selection guide, absolute maximum ratings, and application notes.
Allegro A1101 specifications
| Supply Voltage Range | 3.8 V – 24 V |
|---|---|
| Maximum Output Current | 25 mA |
| Reverse Supply Voltage | -30 V |
| Power‑On Time | 4 µs (typ.) |
| Package Types | 3‑pin SOT23W (LH) and 3‑pin SIP (UA) |
Source: ALLEGRO MICROSYSTEMS A1101 A1102 A1103 A1104 A1106 Continuous-Time Switch Family
All Allegro A1101 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum output current the switches can sink?
Each switch can sink up to 25 mA.
From: ALLEGRO MICROSYSTEMS A1101 A1102 A1103 A1104 A1106 Continuous-Time Switch Family
Which package options are available for these switches?
They are offered in a 3‑pin SOT23W (LH) surface‑mount package and a 3‑pin SIP (UA) through‑hole package.
From: ALLEGRO MICROSYSTEMS A1101 A1102 A1103 A1104 A1106 Continuous-Time Switch Family
Which package options are available for the A110x devices?
They are offered in a 3‑pin SOT23W (LH) surface‑mount package and a 3‑pin SIP (UA) through‑hole package.
From: ALLEGRO MICROSYSTEMS A1101 A1102 A1103 A1104 A1106 Manual