Pin Assignment
LB1868
IN− 1
IN+ 2
CT 3
OUT1 4
GND 5
10 VIN
9 RD
8 Z2
7 Z1
6 OUT2
Top view
Pin Function
Pin No.
1
2
Pin name
IN−
IN+
3 CT
4 OUT1
6 OUT2
5 GND
7 Z1
8 Z2
9 RD
10 VIN
Function
Hall input + pin. Hysteresis amplifier
Hall input − pin. Hysteresis amplifier
Lockup protection time setting capacitor pin (0.47 to 4.7μF).
Output 1 pin.
Output 2 pin.
GND pin.
External Zener diode pin (external Zener diode to be connected between power supply and Z1).
Kickback absorption voltage alteration pin (shorted to Z1: 12V operation).
Lockup detection pin (latch type).
Regulated power supply input pin (limiting resistor to be inserted between power supply and VIN).
Truth Table
IN+
IN−
H
L
L
H
H
L
L
H
CT
OUT1
OUT2
RD
L
H
L
L
L
L
H
L
H
H
H
H
H
H
H
H
* RD is a latch type output
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