A1103 Datasheet, PDF (1/6 Pages) SEC Electronics Inc. – Unipolar Hall-Effect Digital Switch

Features and Benefits
– 4.5V to 24V Operation
– -40℃ to 150℃ Superior temperature operation
– Bipolar technology
– Open-collector 25 mA output
– Reverse battery protection
– Small Size-SOT23 3L or SIP 3L
– Solid-state reliability
– Resistant to physical stress
– Activate with small, commercially available
Permanent magnets
A1103
Unipolar Hall-Effect Digital Switch
Application Examples
 Automotive, Consumer and Industrial
 Solid-state switch
 Brushless DC motor commutation
 Speed detection
 Linear position detection
 Angular position detection
 Proximity detection
3 pin SOT23 (suffix SO)
3 pin SIP (suffix UA)
Functional Block Diagram
VDD
Voltage
Regulatr
Chopper
Hall
Plate
GND
SIP Package
Pin 1 – V_DD
Pin 2 – GND
Pin 3 – OUT
SOT Package
Pin 1 – V_DD
Pin 2 – OUT
Pin 3 – GND
OUT
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V1.10 May 1, 2011