lb1867m Sanyo Semiconductor Corporation, lb1867m Datasheet - Page 3

• Manufacturer Part Number: lb1867m
• Description: Two-phase Brushless Fan Motor Driver
• Manufacturer: Sanyo Semiconductor Corporation

Block Diagram and Sample Application Circuit
Truth Table
Pin Description
Pin name
OUT1
OUT2
IN+
GND
H
H
VCC
L
L
VIN
IN–
IN+
RD
CT
Z1
Z2
0.47to 10 F
C1
R1
R2
VIN
Hall input + pin Hysteresis amplifier
Hall input – pin Hysteresis amplifier
Lockup protection time setting capacitor pin (0.47 to 4.7 F)
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)
Output 1 pin
Output 2 pin
Regulated power supply input pin (limiting resistor to be inserted between power supply and VIN)
GND pin
Lockup detection pin (latch type)
IN–
H
H
L
L
H
IN+
IN–
CT
CT
L
H
L
H
Constant
current
source
OUT1
H
H
H
L
OUT2
H
H
H
L
Control block
LB1867M
shutdown
Thermal
*RD is a latch type output
Function
RD
L
L
H
H
OUT1
OUT2
GND
L1
Z1
Z2
RD
No. 6204-3/5
L2