lb8681cl Sanyo Semiconductor Corporation, lb8681cl Datasheet - Page 4

• Manufacturer Part Number: lb8681cl
• Description: Constant Current Driver Ic With H-bridge ? 1.5 Channel
• Manufacturer: Sanyo Semiconductor Corporation

Block Diagram
Truth Table
Note : "−" indicates the outp
[Constant current formula] I OUT = 0.2 ÷ RF
When V CC is high, the 0.01μF capacitor may be inserted between OUT and OUT.
CPU
High
Low
IN1
V CC
0.1μF
IN1
IN2
IN3
Input
High
High
High
High
Low
Low
Low
Low
IN2
ut off state. (high-impedance)
Thermal protection
GND
circuit
Logic
circuit
High
High
High
High
Low
Low
Low
Low
IN3
Reference
voltage
0.2V
OUT1
Constant current
High
control amplifier
Low
Low
+
-
−
−
−
−
−
LB8681CL
Output
OUT2
High
High
High
High
Low
Low
−
−
OUT1
OUT3
High
Low
Low
Shutter
−
−
−
−
−
RSE
OUT2
Aperture
Iris
Shutter
OUT3
RFG
Standby
Notes
0.1μF
Forward
Reverse
Forward
Reverse
Off
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