lb1868m Sanyo Semiconductor Corporation, lb1868m Datasheet - Page 3

• Manufacturer Part Number: lb1868m
• Description: Two-phase Brushless Fan Motor Driver
• Manufacturer: Sanyo Semiconductor Corporation

Block Diagram and Sample Application Circuit
Truth Table
OPEN
ST
or
H
L
D
0.47 to 10 F
IN+
H
H
H
L
L
L
ST
C1
IN+
IN–
R1
R2
H
IN–
H
H
H
CT
L
L
L
VIN
CT
H
H
L
L
L
L
Constant
current
source
OUT1
H
H
H
H
H
L
OUT2
*RD is a latch type output.
H
H
H
H
H
L
LB1868M
Control block
RD
H
H
L
L
L
L
shutdown
Thermal
FG
H
H
H
L
L
L
OUT1
OUT2
GND
L1
BC
Z1
Z2
FG
RD
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L2