HTML datasheet archive (search documentation on electronic components) Search datasheet (1.687.043 components)
Search field

Datasheet: L298P (STMicroelectronics)

DUAL FULL-BRIDGE DRIVER

 

Download: PDF   ZIP
STMicroelectronics
L298
Jenuary 2000
DUAL FULL-BRIDGE DRIVER
Multiw att15
O RDERING NUMBERS : L298N (Mult iwatt Vert. )
L298HN (Multiwatt Horiz. )
L298P (PowerSO20)
BLOCK DIAGRAM
.
OPERATING SUPPLY VOLTAGE UP TO 46 V
.
TOTAL DC CURRENT UP TO 4 A
.
LOW SATURATION VOLTAGE
.
OVERTEMPERATURE PROTECTION
.
LOGICAL "0" INPUT VOLTAGE UP TO 1.5 V
(HIGH NOISE IMMUNITY)
DESCRIPTION
The L298 is an integrated monolithic circuit in a 15-
lead Multiwatt and PowerSO20 packages. It is a
high voltage, high current dual full-bridge driver de-
signed to accept standardTTL logic levels and drive
inductive loads such as relays, solenoids, DC and
stepping motors. Two enableinputs are provided to
enable or disable the deviceindependentlyof the in-
put signals. The emitters of the lower transistors of
each bridge are connected together and the corre-
sponding external terminal can be used for the con-
nectionof an externalsensing resistor. An additional
supply input is provided so that the logic works at a
lower voltage.
PowerSO20
®
1/13
PIN CONNECTIONS (top view)
GND
Input 2
VSS
N.C.
Out 1
V
S
Out 2
Input 1
Enable A
Sense A
GND
10
8
9
7
6
5
4
3
2
13
14
15
16
17
19
18
20
12
1
11
GND
D95IN239
Input 3
Enable B
Out 3
Input 4
Out 4
N.C.
Sense B
GND
ABSOLUTE MAXIMUM RATINGS
Symb ol
Parameter
Value
Uni t
V
S
Power Supply
50
V
V
SS
Logic Supply Voltage
7
V
V
I
,V
en
Input and Enable Voltage
­0.3 to 7
V
I
O
Peak Output Current (each Channel)
­ Non Repetitive (t = 100
µ
s)
­Repetitive (80% on ­20% off; t
on
= 10ms)
­DC Operation
3
2.5
2
A
A
A
V
sens
Sensing Voltage
­1 to 2.3
V
P
tot
Total Power Dissipation (T
case
= 75
°
C)
25
W
T
op
Junction Operating Temperature
­25 to 130
°
C
T
stg
, T
j
Storage and Junction Temperature
­40 to 150
°
C
THERMAL DATA
Symb ol
Parameter
Po werSO20
Mu ltiwatt15
Uni t
R
th j-case
Thermal Resistance Junction-case
Max.
­
3
°
C/W
R
th j-amb
Thermal Resistance Junction-ambient
Max.
13 (*)
35
°
C/W
(*) Mounted on aluminum substrate
1
2
3
4
5
6
7
9
10
11
8
ENABLE B
INPUT 3
LOGIC SUPPLY VOLTAGE V
SS
GND
INPUT 2
ENABLE A
INPUT 1
SUPPLY VOLTAGE V
S
OUTPUT 2
OUTPUT 1
CURRENT SENSING A
TAB CONNECTED TO PIN 8
13
14
15
12
CURRENT SENSING B
OUTPUT 4
OUTPUT 3
INPUT 4
D95IN240A
Multiwatt15
PowerSO20
L298
2/13
PIN FUNCTIONS (refer to the block diagram)
MW. 15
Po werSO
Name
Fun ction
1;15
2;19
Sense A; Sense B
Between this pin and ground is connected the sense resistor to
control the current of the load.
2;3
4;5
Out 1; Out 2
Outputs of the Bridge A; the current that flows through the load
connected between these two pins is monitored at pin 1.
4
6
V
S
Supply Voltage for the Power Output Stages.
A non-inductive 100nF capacitor must be connected between this
pin and ground.
5;7
7;9
Input 1; Input 2
TTL Compatible Inputs of the Bridge A.
6;11
8;14
Enable A; Enable B
TTL Compatible Enable Input: the L state disables the bridge A
(enable A) and/or the bridge B (enable B).
8
1,10,11,20
GND
Ground.
9
12
VSS
Supply Voltage for the Logic Blocks. A100nF capacitor must be
connected between this pin and ground.
10; 12
13;15
Input 3; Input 4
TTL Compatible Inputs of the Bridge B.
13; 14
16;17
Out 3; Out 4
Outputs of the Bridge B. The current that flows through the load
connected between these two pins is monitored at pin 15.
­
3;18
N.C.
Not Connected
ELECTRICAL CHARACTERISTICS (V
S
= 42V; V
SS
= 5V, T
j
= 25
°
C; unless otherwise specified)
Symbol
Parameter
Test Co ndi tions
Min .
Typ .
Max.
Uni t
V
S
Supply Voltage (pin 4)
Operative Condition
V
IH
+2.5
46
V
V
SS
Logic Supply Voltage (pin 9)
4.5
5
7
V
I
S
Quiescent Supply Current (pin 4)
V
en
= H; I
L
= 0
V
i
= L
V
i
= H
13
50
22
70
mA
mA
V
en
= L
V
i
= X
4
mA
I
SS
Quiescent Current from V
SS
(pin 9) V
en
= H; I
L
= 0
V
i
= L
V
i
= H
24
7
36
12
mA
mA
V
en
= L
V
i
= X
6
mA
V
iL
Input Low Voltage
(pins 5, 7, 10, 12)
­0.3
1.5
V
V
iH
Input High Voltage
(pins 5, 7, 10, 12)
2.3
VSS
V
I
iL
Low Voltage Input Current
(pins 5, 7, 10, 12)
V
i
= L
­10
µ
A
I
iH
High Voltage Input Current
(pins 5, 7, 10, 12)
Vi = H
V
SS
­0.6V
30
100
µ
A
V
en
= L
Enable Low Voltage (pins 6, 11)
­0.3
1.5
V
V
en
= H
Enable High Voltage (pins 6, 11)
2.3
V
SS
V
I
en
= L
Low Voltage Enable Current
(pins 6, 11)
V
en
= L
­10
µ
A
I
en
= H
High Voltage Enable Current
(pins 6, 11)
V
en
= H
V
SS
­0.6V
30
100
µ
A
V
CEsat (H)
Source Saturation Voltage
I
L
= 1A
I
L
= 2A
0.95
1.35
2
1.7
2.7
V
V
V
CEsat (L)
Sink Saturation Voltage
I
L
= 1A
(5)
I
L
= 2A
(5)
0.85
1.2
1.7
1.6
2.3
V
V
V
CEsat
Total Drop
I
L
= 1A
(5)
I
L
= 2A
(5)
1.80
3.2
4.9
V
V
V
sens
Sensing Voltage (pins 1, 15)
­1 (1)
2
V
L298
3/13
Figure 1 : Typical Saturation Voltage vs. Output
Current.
Figure 2 : Switching Times Test Circuits.
Note : For INPUT Switching, set EN = H
For ENABLESwitching, set IN = H
1) 1)Sensing voltage can be ­1 V for t
50
µ
sec; in steady state V
sens
min
­ 0.5 V.
2) See fig. 2.
3) See fig. 4.
4) The load must be a pure resistor.
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Co ndi tions
Min .
Typ .
Max.
Uni t
T
1
(V
i
)
Source Current Turn-off Delay
0.5 V
i
to 0.9 I
L
(2); (4)
1.5
µ
s
T
2
(V
i
)
Source Current Fall Time
0.9 I
L
to 0.1 I
L
(2); (4)
0.2
µ
s
T
3
(V
i
)
Source Current Turn-on Delay
0.5 V
i
to 0.1 I
L
(2); (4)
2
µ
s
T
4
(V
i
)
Source Current Rise Time
0.1 I
L
to 0.9 I
L
(2); (4)
0.7
µ
s
T
5
(V
i
)
Sink Current Turn-off Delay
0.5 V
i
to 0.9 I
L
(3); (4)
0.7
µ
s
T
6
(V
i
)
Sink Current Fall Time
0.9 I
L
to 0.1 I
L
(3); (4)
0.25
µ
s
T
7
(V
i
)
Sink Current Turn-on Delay
0.5 V
i
to 0.9 I
L
(3); (4)
1.6
µ
s
T
8
(V
i
)
Sink Current Rise Time
0.1 I
L
to 0.9 I
L
(3); (4)
0.2
µ
s
fc (V
i
)
Commutation Frequency
I
L
= 2A
25
40
KHz
T
1
(V
en
)
Source Current Turn-off Delay
0.5 V
en
to 0.9 I
L
(2); (4)
3
µ
s
T
2
(V
en
)
Source Current Fall Time
0.9 I
L
to 0.1 I
L
(2); (4)
1
µ
s
T
3
(V
en
)
Source Current Turn-on Delay
0.5 V
en
to 0.1 I
L
(2); (4)
0.3
µ
s
T
4
(V
en
)
Source Current Rise Time
0.1 I
L
to 0.9 I
L
(2); (4)
0.4
µ
s
T
5
(V
en
)
Sink Current Turn-off Delay
0.5 V
en
to 0.9 I
L
(3); (4)
2.2
µ
s
T
6
(V
en
)
Sink Current Fall Time
0.9 I
L
to 0.1 I
L
(3); (4)
0.35
µ
s
T
7
(V
en
)
Sink Current Turn-on Delay
0.5 V
en
to 0.9 I
L
(3); (4)
0.25
µ
s
T
8
(V
en
)
Sink Current Rise Time
0.1 I
L
to 0.9 I
L
(3); (4)
0.1
µ
s
L298
4/13
Figure 3 : Source Current Delay Times vs. Input or Enable Switching.
Figure 4 : Switching Times Test Circuits.
Note : For INPUT Switching, set EN = H
For ENABLE Switching, set IN = L
L298
5/13
© 2019 • ICSheet
Contact form
Main page