L298
PIN FUNCTIONS
(refer to the block diagram)
MW.15
1;15
2;3
4
Po werSO
2;19
4;5
6
Name
Sense A; Sense B
Out 1; Out 2
V
S
Fun ction
Between this pin and ground is connected the sense resistor to
control the current of the load.
Outputs of the Bridge A; the current that flows through the load
connected between these two pins is monitored at pin 1.
Supply Voltage for the Power Output Stages.
A non-inductive 100nF capacitor must be connected between this
pin and ground.
TTL Compatible Inputs of the Bridge A.
TTL Compatible Enable Input: the L state disables the bridge A
(enable A) and/or the bridge B (enable B).
Ground.
Supply Voltage for the Logic Blocks. A100nF capacitor must be
connected between this pin and ground.
TTL Compatible Inputs of the Bridge B.
Outputs of the Bridge B. The current that flows through the load
connected between these two pins is monitored at pin 15.
Not Connected
5;7
6;11
8
9
10; 12
13; 14
–
7;9
8;14
1,10,11,20
12
13;15
16;17
3;18
Input 1; Input 2
Enable A; Enable B
GND
VSS
Input 3; Input 4
Out 3; Out 4
N.C.
ELECTRICAL CHARACTERISTICS
(V
S
= 42V; V
SS
= 5V, T
j
= 25°C; unless otherwise specified)
Symbol
V
S
V
SS
I
S
Parameter
Supply Voltage (pin 4)
Logic Supply Voltage (pin 9)
Quiescent Supply Current (pin 4)
V
en
= H; I
L
= 0
V
en
= L
I
SS
Quiescent Current from V
SS
(pin 9) V
en
= H; I
L
= 0
V
en
= L
V
iL
V
iH
I
iL
I
iH
V
en
= L
V
en
= H
I
en
= L
I
en
= H
Input Low Voltage
(pins 5, 7, 10, 12)
Input High Voltage
(pins 5, 7, 10, 12)
Low Voltage Input Current
(pins 5, 7, 10, 12)
High Voltage Input Current
(pins 5, 7, 10, 12)
Enable Low Voltage (pins 6, 11)
Enable High Voltage (pins 6, 11)
Low Voltage Enable Current
(pins 6, 11)
High Voltage Enable Current
(pins 6, 11)
V
en
= L
V
en
= H
≤
V
SS
–0.6V
I
L
= 1A
I
L
= 2A
I
L
= 1A
I
L
= 2A
I
L
= 1A
I
L
= 2A
(5)
(5)
(5)
(5)
0.95
0.85
1.80
–1 (1)
30
1.35
2
1.2
1.7
V
i
= L
Vi = H
≤
V
SS
–0.6V
–0.3
2.3
30
V
i
= L
V
i
= H
V
i
= X
V
i
= L
V
i
= H
V
i
= X
–0.3
2.3
24
7
Test Co nditions
Operative Condition
Min .
V
IH
+2.5
4.5
5
13
50
Typ .
Max.
46
7
22
70
4
36
12
6
1.5
VSS
–10
100
1.5
V
SS
–10
100
1.7
2.7
1.6
2.3
3.2
4.9
2
Unit
V
V
mA
mA
mA
mA
mA
mA
V
V
µ
A
µ
A
V
V
µ
A
µ
A
V
V
V
V
V
V
V
V
CEsat (H)
Source Saturation Voltage
V
CEsat (L)
Sink Saturation Voltage
V
CEsat
V
sens
Total Drop
Sensing Voltage (pins 1, 15)
3/13
STMICROELECTRONICS [ STMICROELECTRONICS ]
