lb1661 Sanyo Semiconductor Corporation, lb1661 Datasheet - Page 2

• Manufacturer Part Number: lb1661
• Description: 2-phase Unipolar Brushless Motor Drivers
• Manufacturer: Sanyo Semiconductor Corporation

Classification
The LB1660 series are classified by the package and whether the on-chip output stage zener diode is used or not, as follows.
It is recommended to use the LB1661, 1665 in the following cases.
1 A capacitor is connected across the output and GND and the back emf is more than V
2 External zener diodes are connected to absorb the kickback voltage.
Pin Assignments
Truth Table
Package
DIP8 (Pd = 1.2 W)
DIP16F (Pd = 2.0 W)
IN+
H
H
L
L
Output stage zener diode
IN−
H
H
L
L
CR
H
H
L
L
With (V
LB1660N
LB1664N
LB1660N, 1661, 1664N, 1665
Z
= 59 V) Without (Vor = 85 V)
OUT1
H
H
H
L
OUT2
LB1661
LB1665
H
H
H
L
Z
= 59 V
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