
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
Overview
The LB1943 is a forward/reverse motor driver IC. This IC
supports forward, reverse, and braking control from a
single input, and the desired output voltage can be set with
a resistor. Either full drive or VC drive can be selected
from the single input, and the LB1943 can be controlled
from a microprocessor.
Functions
Single-input control of forward, reverse, and braking
operations
Resistor output voltage setup
Either full drive or VC drive can be selected from the
single control input.
Can be controlled from a microprocessor.
Built-in motor dash current absorbing device
Built-in reference voltage circuit
Built-in thermal protection circuit
Package Dimensions
unit: mm
3034A-SIP10
24.2
10
1.1
min
0.5
1
1.2
2.54
0.67
6.5
7.7
max
4.9
1.5
3.25
0.25
Monolithic Digital IC
73099TH (OT)/22898HA (OT) No. 5806-1/5
SANYO: SIP10
[LB1943]
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Forward/Reverse Motor Driver with Braking Function
LB1943
Ordering number : ENN5806A
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC max
18
V
Input voltage
VIN
VCC ≥ VIN
–0.3 to +6
V
Output current
IOUT
±1.6
A
Allowable power dissipation
Pd max
1.2
W
Operating temperature
Topr
–25 to +75
°C
Storage temperature
Tstg
–55 to +125
°C
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Supply voltage range
VCC1
8 to 18
V
VCC2VCC1 ≥ VCC2
5 to 18
V
Forward-reverse disabled time
Toff
Over 20
s
Allowable Operating Ranges at Ta = 25°C