Allegro A1101-A1104 and A1106 Hall-Effect Switches
The Allegro A1101-A1104 and A1106 Hall-effect switches are advanced BiCMOS technology devices designed as replacements for the popular Allegro 312x and 314x series. They offer fast power-on times, low-noise operation, and increased switchpoint accuracy due to post-packaging programming. These switches feature unique Hall element geometries and low-offset amplifiers to minimize noise and residual offset voltage, making them suitable for automotive and industrial motor commutation applications. The integrated voltage regulator allows operation from 3.8 to 24 V, and extensive on-board protection circuitry provides a 30 V absolute maximum voltage rating without external components. All devices in the family share identical features except for their magnetic switchpoint levels. The BiCMOS process enables small geometries, allowing for ultrasmall package options like the SOT23W (LH) and three-lead SIP (UA). All packages are lead-free with 100% matte-tin-plated leadframes.
Product Attributes
- Brand: Allegro
- Technology: BiCMOS
- Certifications: AEC-Q100 automotive qualified
- Package Types: SOT23W (LH), 3-pin SIP (UA)
- Lead Finish: 100% matte-tin-plated
- Environmental: Lead (Pb) free
Technical Specifications
| Part Number | Mounting | Ambient Temp. Range | BRP (Min) | BOP (Max) | VCC (V) | VOUT(SAT) (mV) | tPO (s) | tr (ns) | tf (ns) | ICCON (mA) | ICCOFF (mA) | BOP (G) | BRP (G) | BHYS (G) |
| A1101ELHLT-T | SOT23W Surface Mount | 40C to 85C | 10 | 175 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 50 - 160 | 10 - 130 | 20 - 80 |
| A1101LLHLT-T | SOT23W Surface Mount | 40C to 150C | 10 | 175 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 30 - 100 | 10 - 45 | 20 - 80 |
| A1101EUA-T | SIP Through Hole | 40C to 85C | 10 | 175 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 50 - 160 | 10 - 130 | 20 - 80 |
| A1101LUA-T | SIP Through Hole | 40C to 150C | 10 | 175 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 30 - 100 | 10 - 45 | 20 - 80 |
| A1102ELHLT-T | SOT23W Surface Mount | 40C to 85C | 60 | 245 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 130 - 230 | 75 - 175 | 30 - 80 |
| A1102LLHLT-T | SOT23W Surface Mount | 40C to 150C | 60 | 245 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 115 - 245 | 60 - 190 | 30 - 80 |
| A1102EUA-T | SIP Through Hole | 40C to 85C | 60 | 245 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 130 - 230 | 75 - 175 | 30 - 80 |
| A1102LUA-T | SIP Through Hole | 40C to 150C | 60 | 245 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 115 - 245 | 60 - 190 | 30 - 80 |
| A1103ELHLT-T | SOT23W Surface Mount | 40C to 85C | 150 | 355 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 220 - 340 | 165 - 285 | 30 - 80 |
| A1103LLHLT-T | SOT23W Surface Mount | 40C to 150C | 150 | 355 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 205 - 355 | 150 - 300 | 30 - 80 |
| A1103LUA-T | SIP Through Hole | 40C to 150C | 150 | 355 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 205 - 355 | 150 - 300 | 30 - 80 |
| A1104EUA-T | SIP Through Hole | 40C to 85C | 25 | 450 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 70 - 350 | 50 - 330 | 20 - 55 |
| A1104LLHLT-T | SOT23W Surface Mount | 40C to 150C | 25 | 450 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 35 - 450 | 25 - 430 | 20 - 55 |
| A1104LUA-T | SIP Through Hole | 40C to 150C | 25 | 450 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 35 - 450 | 25 - 430 | 20 - 55 |
| A1106EUA-T | SIP Through Hole | 40C to 85C | 160 | 430 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 280 - 400 | 180 - 300 | 70 - 140 |
| A1106LLHLT-T | SOT23W Surface Mount | 40C to 150C | 160 | 430 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 260 - 430 | 160 - 330 | 70 - 140 |
| A1106LUA-T | SIP Through Hole | 40C to 150C | 160 | 430 | 3.8 - 24 | 215 - 400 | - 4 | - 400 | - 400 | 4.1 - 7.5 | 3.8 - 7.5 | 260 - 430 | 160 - 330 | 70 - 140 |
2304140030_ALLEGRO-A1101EUA-T_C1526809.pdf
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