SANYO LB1943 Datasheet
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
3043A-SIP10
Monolithic Digital IC
22898HA (OT) No. 5806-1/5
SANYO: SIP10
[LB1943]
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-0005 JAPAN
Forward/Reverse Motor Driver with Braking Function
LB1943
Ordering number : EN5806
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
CC
max 18 V
Input voltage V
IN
VCC≥ V
IN
–0.3 to +6 V
Output current I
OUT
±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
V
CC
1 8 to 18 V
V
CC
2VCC1 ≥ VCC2 5 to 18 V
Forward-reverse disabled time Toff Over 20 µs
Allowable Operating Ranges at Ta = 25°C
Parameter Symbol Conditions
Ratings
Unit
min typ max
Input low-level voltage V
INL
01V
Input high-level voltage V
INH
4.2 6.0 V
Input mid-level voltage V
INM
23V
Input impedance Z
IN
75 kΩ
Current drain I
CC
5.5 10.0 mA
Electrical Characteristics at Ta = 25°C, VCC= 12 V
Continued on next page.
No. 58062/5
LB1943
Continued from preceding page.
Note: Items marked with an asterisk (*) are design target values, and are not tested.
Input levels: VH: Over 4.2 V
V
M
: 2.0 to 3.0 V
V
L
: Under 1.0 V
IN1 and IN2 go to 2.5 V when left open.
LB1943 operation is equivalent to that of the LB1641.
Pin Assignment
Parameter Symbol Conditions
Ratings
Unit
min typ max
V
OUT
1
R
L
= 60 Ω, VC= 2.5 V
4.4 4.95 5.4 V
Output voltage
V
IN
1 = 2.5 V, VIN2 = 0 V
V
OUT
2
R
L
= 60 Ω, VC= 2.5 V
4.4 4.95 5.4 V
V
IN
1 = 2.5 V, VIN2 = 5.0 V
Output leakage current I
OL
RL= ∞ 0.01 1.0 mA
Saturation voltage (upper)
V (sat)11 V
CC
= 12V, I
OUT
= 300 mA 1.9 2.2 V
V (sat)12 V
CC
= 12V, I
OUT
= 500 mA 1.9 2.3 V
Saturation voltage (lower)
V (sat)21 V
CC
= 12V, I
OUT
= 300 mA 0.25 0.5 V
V (sat)22 V
CC
= 12V, I
OUT
= 500 mA 0.4 0.65 V
Reference power supply V
REF
6.0 6.35 6.8 V
Reference voltage load characteristics ∆V
REF
/∆I
REFIREF
= 0 to –2.0 mA 0.05 0.1 V/mA
Control-to-output gain V
OUT/VC
, VC= 2.5 V, RL= 60 Ω 1.5 1.9 2.4 ×
TSD operating temperature T
STD
* 150 180 °C
Truth Table
Input Output voltage
Operation
IN1 IN2 OUT1 OUT2
H H L FULL Forward (reverse) operation
M H L V
C
× 2 Forward (reverse) operation
L H L V
C
× 2 Forward (reverse) operation
H M OFF OFF Braking
M M OFF OFF Braking
L M OFF OFF Braking
H L FULL L Reverse (forward) operation
M L V
C
× 2 L Reverse (forward) operation
L L V
C
× 2 L Reverse (forward) operation
1.4
1.2
1.0
0.8
0.6
Pd max – Ta
Tj = 125 °C
0.6
0.4
0
Allowable power dissipation, Pd max – W
-25
0 25 50 75 100
Ambient temperature, Ta – °C
Loading...