Product Overview
The Allegro A1101-A1104 and A1106 Hall-effect switches are advanced BiCMOS technology devices designed as replacements for the 312x and 314x series. They offer fast power-on times and low-noise operation, with switchpoint accuracy enhanced by post-packaging programming to eliminate induced offsets. These switches integrate a voltage regulator, Hall-voltage generator, amplifier, Schmitt trigger, and NMOS output transistor on a single chip, allowing operation from 3.8 to 24 V. Extensive on-board protection provides a 30 V absolute maximum voltage rating suitable for automotive and industrial motor commutation applications. The family offers identical devices with varying magnetic switchpoint levels and is available in ultrasmall, lead-free packages with matte-tin plating.
Product Attributes
- Brand: Allegro
- Technology: BiCMOS
- Certifications: AEC-Q100 automotive qualified
- Package Styles: SOT23W (LH), 3-pin SIP (UA)
- Lead Finish: 100% matte-tin-plated leadframes
- Environmental: Lead (Pb) free
Technical Specifications
| Part Number | Mounting | Ambient Temperature (TA) | BRP (Min) | BOP (Max) | VCC Operating | TJ(max) | RJA (Package LH, 1-layer PCB) | RJA (Package UA, 1-layer PCB) |
| A1101ELHLT-T | 3-pin SOT23W surface mount | 40C to 85C | 10 G | 175 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1101LLHLT-T | 3-pin SOT23W surface mount | 40C to 150C | 10 G | 175 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1101EUA-T | 3-pin SIP through hole | 40C to 85C | 10 G | 175 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1101LUA-T | 3-pin SIP through hole | 40C to 150C | 10 G | 175 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1102ELHLT-T | 3-pin SOT23W surface mount | 40C to 85C | 60 G | 245 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1102LLHLT-T | 3-pin SOT23W surface mount | 40C to 150C | 60 G | 245 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1102EUA-T | 3-pin SIP through hole | 40C to 85C | 60 G | 245 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1102LUA-T | 3-pin SIP through hole | 40C to 150C | 60 G | 245 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1103ELHLT-T | 3-pin SOT23W surface mount | 40C to 85C | 150 G | 355 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1103LLHLT-T | 3-pin SOT23W surface mount | 40C to 150C | 150 G | 355 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1103LUA-T | 3-pin SIP through hole | 40C to 150C | 150 G | 355 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1104EUA-T | 3-pin SIP through hole | 40C to 85C | 25 G | 450 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1104LLHLT-T | 3-pin SOT23W surface mount | 40C to 150C | 25 G | 450 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1104LUA-T | 3-pin SIP through hole | 40C to 150C | 25 G | 450 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1106EUA-T | 3-pin SIP through hole | 40C to 85C | 160 G | 430 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1106LLHLT-T | 3-pin SOT23W surface mount | 40C to 150C | 160 G | 430 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
| A1106LUA-T | 3-pin SIP through hole | 40C to 150C | 160 G | 430 G | 3.8 24 V | 165 C | 228 C/W | 165 C/W |
2304140030_ALLEGRO-A1101ELHLT-T_C146418.pdf
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