Product Overview
The Allegro A1210-A1214 Hall-effect latches are next-generation replacements for the popular Allegro 317x and 318x lines. Manufactured using BiCMOS technology, these devices offer fast power-on times and low-noise operation. They feature an integrated voltage regulator, Hall-voltage generator, small-signal amplifier, Schmitt trigger, and NMOS output transistor, enabling operation from 3.8 to 24 V. Extensive on-board protection allows for a 30 V absolute maximum voltage rating, making them suitable for automotive and industrial motor commutation applications without external components. Device programming is performed after packaging to ensure increased switchpoint accuracy by eliminating offsets induced by package stress.
Product Attributes
- Brand: Allegro
- Technology: BiCMOS
- Certifications: AEC-Q100 automotive qualified
- Lead Finish: 100% matte-tin-plated leadframes
- Lead-Free: Yes
- Package Styles: SOT23W (LH), 3-pin SIP (UA)
Technical Specifications
| Part Number | Package | Mounting | Ambient Temperature (TA) | BRP (Min) | BOP (Max) |
| A1210ELHLT-T | 3-pin SOT23W | Surface Mount | 40C to 85C | 150 G | 150 G |
| A1210LLHLT-T | 3-pin SOT23W | Surface Mount | 40C to 150C | 150 G | 150 G |
| A1210LUA-T | 3-pin SIP | Through Hole | 40C to 150C | 150 G | 150 G |
| A1211LUA-T | 3-pin SIP | Through Hole | 40C to 150C | 180 G | 180 G |
| A1212LLHLT-T | 3-pin SOT23W | Surface Mount | 40C to 150C | 175 G | 175 G |
| A1212LUA-T | 3-pin SIP | Through Hole | 40C to 150C | 175 G | 175 G |
| A1213LLHLT-T | 3-pin SOT23W | Surface Mount | 40C to 150C | 200 G | 200 G |
| A1213LUA-T | 3-pin SIP | Through Hole | 40C to 150C | 200 G | 200 G |
| A1214LLHLT-T | 3-pin SOT23W | Surface Mount | 40C to 150C | 300 G | 300 G |
| A1214LUA-T | 3-pin SIP | Through Hole | 40C to 150C | 300 G | 300 G |
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Units |
| Supply Voltage | VCC | Operating, TJ < 165C | 3.8 | | 24 | V |
| Output Leakage Current | IOUTOFF | VOUT = 24 V, B < BRP | | | 10 | A |
| Output On Voltage | VOUT(SAT) | IOUT = 20 mA, B > BOP | | 215 | 400 | mV |
| Power-On Time | tPO | Slew rate (dVCC/dt) < 2.5 V/s, B > BOP + 5 G or B < BRP | | 5 G | 4 | s |
| Output Rise Time | tr | VCC = 12 V, RLOAD = 820 , CS = 12 pF | | | 400 | ns |
| Output Fall Time | tf | VCC = 12 V, RLOAD = 820 , CS = 12 pF | | | 400 | ns |
| Supply Current (On) | ICCON | B > BOP | | 4.1 | 7.5 | mA |
| Supply Current (Off) | ICCOFF | B < BRP | | 3.8 | 7.5 | mA |
| Reverse Battery Current | IRCC | VRCC = 30 V | | | 10 | mA |
| Supply Zener Clamp Voltage | VZ | ICC = 10.5 mA; TA = 25C | 32 | | | V |
| Operate Point | Part Number | Magnetic Field Polarity | Min. G | Typ. G | Max. G |
| BOP | A1210 | South pole adjacent to branded face | 25 | 78 | 150 |
| BOP | A1211 | South pole adjacent to branded face | 15 | 87 | 180 |
| BOP | A1212 | South pole adjacent to branded face | 50 | 107 | 175 |
| BOP | A1213 | South pole adjacent to branded face | 80 | | 200 |
| BOP | A1214 | South pole adjacent to branded face | 140 | | 300 |
| BRP | A1210 | North pole adjacent to branded face | 150 | 78 | 25 |
| BRP | A1211 | North pole adjacent to branded face | 180 | 95 | 15 |
| BRP | A1212 | North pole adjacent to branded face | 175 | 117 | 50 |
| BRP | A1213 | North pole adjacent to branded face | 200 | | 80 |
| BRP | A1214 | North pole adjacent to branded face | 300 | | 140 |
| Hysteresis | A1210 | BOP BRP | 50 | 155 | |
| Hysteresis | A1211 | BOP BRP | 80 | 180 | |
| Hysteresis | A1212 | BOP BRP | 100 | 225 | 350 |
| Hysteresis | A1213 | BOP BRP | 160 | | 400 |
| Hysteresis | A1214 | BOP BRP | 280 | | 600 |
