Automotive Hall Effect Bipolar Switch ALLEGRO A1203EUA-T with Enhanced Accuracy and Low Noise Design
Product Overview
The Allegro A1202 and A1203 Hall-effect bipolar switches are advanced, continuous-time devices designed as replacements and extensions for the popular A3133 and A3132 series. Manufactured using BiCMOS technology, these switches offer fast power-on times and low-noise operation, with enhanced switchpoint accuracy achieved through post-packaging programming to minimize induced offsets. Their integrated design includes a voltage regulator, Hall-voltage generator, amplifier, Schmitt trigger, and NMOS output transistor, enabling operation from 3.8 to 24 V and a 30 V absolute maximum voltage rating for robust protection in automotive and motor commutation applications without external components. These devices are available in ultrasmall packages, including SOT23W (LH) and a three-lead SIP (UA), both featuring lead-free, matte-tin-plated leadframes.
Product Attributes
- Brand: Allegro
- Technology: BiCMOS
- Certifications: AEC-Q100 automotive qualified
- Lead-Free: Yes
- Package Lead Finish: 100% matte-tin-plated
Technical Specifications
| Part Number | Mounting | Ambient Temperature Range | BRP (Min) (G) | BOP (Max) (G) | Package |
|---|---|---|---|---|---|
| A1202LUA-T | 3-pin SIP through hole | 40C to 150C | 75 | 75 | UA |
| A1203EUA-T | 3-pin SIP through hole | 40C to 85C | 95 | 95 | UA |
| A1203LLHLT-T | 3-pin SOT23W surface mount | 40C to 150C | LH | ||
| A1203LLHLX-T | 3-pin SOT23W surface mount | 40C to 150C | LH | ||
| A1203LUA-T | 3-pin SIP through hole | 40C to 150C | UA |
| 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(max) + 5 G or B < BRP(min) 5 G | 4 | s | ||
| Output Rise Time | tr | VCC = 12 V, RLOAD = 820 , CS = 12 pF | 2 | s | ||
| Output Fall Time | tf | VCC = 12 V, RLOAD = 820 , CS = 12 pF | 2 | s | ||
| Supply Current (On) | ICCON | B > BOP | 3.8 | 7.5 | mA | |
| Supply Current (Off) | ICCOFF | B < BRP | 3.5 | 7.5 | mA | |
| Reverse Battery Current | IRCC | VRCC = 30 V | 10 | mA | ||
| Supply Zener Clamp Voltage | VZ | ICC = 30 mA; TA = 25C | 32 | V | ||
| Supply Zener Current | IZ | VZ = 32 V; TA = 25C | 30 | mA | ||
| Operate Point | BOP | A1202 | 26 | 75 | G | |
| Operate Point | BOP | A1203 | 26 | 95 | G | |
| Release Point | BRP | A1202 | 75 | 26 | G | |
| Release Point | BRP | A1203 | 95 | 26 | G | |
| Hysteresis | BHYS | A1202 | 30 | 52 | G | |
| Hysteresis | BHYS | A1203 | 30 | 52 | G |
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