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Specifications
Operating Current:
5.1uA
Operating Temperature:
-40℃~+85℃
Voltage - Supply:
2.5V~3.5V
Mfr. Part #:
A3212ELHLT-T
Package:
SOT-23W
Key Attributes
Model Number:
A3212ELHLT-T
Product Description
Product Overview
The A3211 and A3212 are ultrasensitive, pole-independent Hall-effect switches with latched digital output, designed for low-power, battery-operated devices. They offer reduced power requirements, superior reliability, and ease of manufacturing, making them ideal replacements for reed switches. Features include chopper stabilization for improved stability and advanced CMOS processing for low-voltage operation.
Product Attributes
- Brand: Allegro MicroSystems, LLC
- Certifications: AEC-Q100 automotive qualified
- Material: Silicon chip
- Package Types: DFN (EH, EL), SOT23W (LH), SIP (UA)
- Lead Finish: 100% matte-tin-plated leadframes (Pb-free)
Technical Specifications
| Part Number | Package | Ambient Temperature TA (C) | State in Magnetic Field | Packing |
| A3211EEHLTT | DFN (2 mm 3 mm, 0.75 mm nominal height) | 40 to 85 | Off | 3000 pieces per reel |
| A3211EELLTT | DFN (2 mm 2 mm, 0.50 mm nominal height) | 40 to 85 | Off | 3000 pieces per reel |
| A3211ELHLTT | SOT23W (3-pin surface mount) | 40 to 85 | Off | 3000 pieces per reel |
| A3211ELHLXT | SOT23W (3-pin surface mount) | 40 to 85 | Off | 10000 pieces per 13-in. reel |
| A3212EEHLTT | DFN (2 mm 3 mm, 0.75 mm nominal height) | 40 to 85 | On | 3000 pieces per reel |
| A3212EELLTT | DFN (2 mm 2 mm, 0.50 mm nominal height) | 40 to 85 | On | 3000 pieces per reel |
| A3212ELHLTT | SOT23W (3-pin surface mount) | 40 to 85 | On | 3000 pieces per reel |
| A3212ELHLXT | SOT23W (3-pin surface mount) | 40 to 85 | On | 10000 pieces per 13-in. reel |
| A3212EUAT | SIP-3 (through hole) | 40 to 85 | On | 500 pieces per bulk bag |
| A3212LLHLTT | SOT23W (3-pin surface mount) | 40 to 150 | On | 3000 pieces per reel |
| A3212LLHLXT | SOT23W (3-pin surface mount) | 40 to 150 | On | 10000 pieces per 13-in. reel |
| A3212LUAT | SIP-3 (through hole) | 40 to 150 | On | 500 pieces per bulk bag |
| Characteristic | Symbol | Test Conditions | Min. | Typ.* | Max. | Units |
| Supply Voltage Range | VDD | Operating | 2.5 | 2.75 | 3.5 | V |
| Output Leakage Current | IOFF | VOUT = 3.5 V, Output off | <1.0 | 1.0 | A | |
| Output On Voltage | VOUT | IOUT = 1 mA, VDD = 2.75 V | 100 | 300 | mV | |
| Awake Time | tawake | 45 | 90 | s | ||
| Period | tperiod | 45 | 90 | ms | ||
| Duty Cycle | d.c. | 0.1 | % | |||
| Chopping Frequency | fC | 340 | kHz | |||
| Supply Current (Chip awake) | IDD(EN) | Chip awake (enabled) | 2.0 | mA | ||
| Supply Current (Chip asleep) | IDD(DIS) | Chip asleep (disabled) | 8.0 | A | ||
| Average Supply Current | IDD(AVG) | VDD = 2.75 V | 5.1 | 10 | A | |
| Average Supply Current | IDD(AVG) | VDD = 3.5 V | 6.7 | 10 | A |
| Characteristic | Symbol | Test Conditions | Min. | Typ. | Max. | Units |
| Operate Points (Range E: TA = 40C to 85C) | BOPS | South pole to branded side; B > BOP, VOUT = High (Output Off) | 37 | 55 | G | |
| BOPN | North pole to branded side; B > BOP, VOUT = High (Output Off) | -55 | -40 | G | ||
| BRPS | South pole to branded side; B < BRP, VOUT = Low (Output On) | 10 | 31 | G | ||
| BRPN | North pole to branded side; B < BRP, VOUT = Low (Output On) | -34 | -10 | G | ||
| Hysteresis | BHYS | |BOPx - BRPx| | 5.9 | G | ||
| Operate Points (Range L: TA = 40C to 150C) | BOPS | South pole to branded side; B > BOP, VOUT = Low (Output On) | 37 | 65 | G | |
| BOPN | North pole to branded side; B > BOP, VOUT = Low (Output On) | -65 | -40 | G | ||
| BRPS | South pole to branded side; B < BRP, VOUT = High (Output Off) | 10 | 31 | G | ||
| BRPN | North pole to branded side; B < BRP, VOUT = High (Output Off) | -34 | -10 | G | ||
| Hysteresis | BHYS | |BOPx - BRPx| | 5.9 | G |
2410010303_ALLEGRO-A3212ELHLT-T_C146383.pdf
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