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automotive hall effect switch Allegro A1157LUA T two wire unipolar sensor with diagnostic capability

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automotive hall effect switch Allegro A1157LUA T two wire unipolar sensor with diagnostic capability

Description : TO-92S Switches (Solid State) RoHS

Mfr. Part # : A1157LUA-T

Model Number : A1157LUA-T

Package : TO-92S

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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

Quality automotive hall effect switch Allegro A1157LUA T two wire unipolar sensor with diagnostic capability for sale

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