Product Overview
The A1150, A1152, A1153, A1155, A1156, A1157, and A1158 are a family of two-wire, unipolar, Hall-effect switches manufactured using Allegro's advanced BiCMOS process with a high-frequency, 4-phase chopper-stabilization technique. This technology ensures magnetic stability across the operating temperature range and eliminates offsets. These devices are ideal for cost-sensitive automotive applications such as sensing seat track position, seat belt buckle presence, hood/trunk latching, and shift selector position. The two-wire configuration offers a cost advantage by requiring one less wire compared to traditional open-collector output switches. Integrated diagnostics are inherent due to the constant output current, which should fall within two narrow ranges; any deviation indicates a fault.
Product Attributes
- Brand: Allegro
- Manufacturing Process: Advanced BiCMOS
- Certifications: AEC-Q100 automotive qualified
- Package Materials: Lead (Pb) free with 100% matte-tin leadframe plating
Technical Specifications
| Part Number | Package | Output (ICC) | Supply Current at ICC(L) (mA) | Magnetic Operate Point, BOP (G) | Magnetic Release Point, BRP (G) | Hysteresis, BHYS (G) | Supply Voltage (V) | Operating Ambient Temperature Range (C) |
| A1150 | SOT23W (LH) | Low | 2 to 5 | 50 to 110 | 45 to 105 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1150 | SIP (UA) | Low | 2 to 5 | 50 to 110 | 45 to 105 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1152 | SOT23W (LH) | Low | 5 to 6.9 | 50 to 110 | 45 to 105 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1152 | SIP (UA) | Low | 5 to 6.9 | 50 to 110 | 45 to 105 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1152 | SIP (UB) | Low | 5 to 6.9 | 50 to 110 | 45 to 105 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1153 | SOT23W (LH) | High | 5 to 6.9 | 50 to 110 | 45 to 105 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1153 | SIP (UA) | High | 5 to 6.9 | 50 to 110 | 45 to 105 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1153 | SIP (UB) | High | 5 to 6.9 | 50 to 110 | 45 to 105 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1155 | SOT23W (LH) | Low | 5 to 6.9 | 20 to 60 | 10 to 55 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1155 | SIP (UA) | Low | 5 to 6.9 | 20 to 60 | 10 to 55 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1155 | SIP (UB) | Low | 5 to 6.9 | 20 to 60 | 10 to 55 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1156 | SOT23W (LH) | High | 5 to 6.9 | 20 to 60 | 10 to 55 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1156 | SIP (UA) | High | 5 to 6.9 | 20 to 60 | 10 to 55 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1156 | SIP (UB) | High | 5 to 6.9 | 20 to 60 | 10 to 55 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1157 | SOT23W (LH) | Low | 2 to 5 | 20 to 80 | 10 to 60 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1157 | SIP (UA) | Low | 2 to 5 | 20 to 80 | 10 to 60 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1158 | SOT23W (LH) | High | 5 to 6.9 | 20 to 80 | 10 to 60 | 5 to 30 | 3 to 24 | 40 to 150 |
| A1158 | SIP (UA) | High | 5 to 6.9 | 20 to 80 | 10 to 60 | 5 to 30 | 3 to 24 | 40 to 150 |
1811061514_ALLEGRO-A1157LUA-T_C146402.pdf
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