Datasheet L298HN, L298P, L298N Datasheet (SGS Thomson Microelectronics)



.OPERATINGSUPPLYVOLTAGEUP TO 46 V

.TOTALDC CURRENT UP TO 4 A

.

LOWSATURATIONVOLTAGE

.OVERTEMPERATUREPROTECTION

.

LOGICAL ”0” INPUT VOLTAGE UP TO 1.5 V
(HIGHNOISE IMMUNITY)

L298

DUALFULL-BRIDGE DRIVER

DESCRIPTION

TheL298isan integratedmonolithiccircuitin a 15­lead Multiwatt and PowerSO20 packages. It is a
highvoltage,highcurrentdualfull-bridgedriver de­signedtoacceptstandardTTLlogiclevelsanddrive
inductiveloads such as relays, solenoids, DC and
steppingmotors.Twoenableinputsare providedto
enableordisablethedeviceindependentlyofthein­put signals.The emittersof thelowertransistorsof
each bridgeareconnectedtogetherand the corre­spondingexternalterminalcan beusedforthecon-

BLOCK DIAGRAM

Multiwatt15

ORDERING NUMBERS : L298N (M ultiwatt Vert.)

L298HN (Mult iwat t H oriz .)

L298P (PowerSO20)

nectionofanexternalsensingresistor.Anadditional
supplyinputis providedso that the logicworksat a
lowervoltage.

PowerSO20

Jenuary 2000

1/13

L298

ABSOLUTEMAXIMUM RATINGS

Symbol Parame t er Value Unit

V

V

V

I,Ven

V

P
T

T

stg,Tj

I

sens

Power Supply 50 V

S

LogicSupply Voltage 7 V

SS

Inputand Enable Voltage –0.3 to 7 V
Peak OutputCurrent (each Channel)

O

– Non Repetitive (t = 100µs)
–Repetitive (80% on –20% off; t
–DC Operation

= 10ms)

on

3

2.5
2

Sensing Voltage –1 to 2.3 V

tot TotalPower Dissipation (T

JunctionOperating Temperature –25 to 130 °

op

case

=75°C)

25 W

Storageand JunctionTemperature –40 to 150

A
A
A

C

°C

PIN CONNECTIONS

(top view)

Multiwatt15

TAB CONNECTED TO PIN 8

GND

Sense A

N.C.
Out 1
Out 2

V

S

Input 1

Enable A

Input 2

GND 10

1
2
3
4

PowerSO20

5
6
7
8
9

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

D95IN239

D95IN240A

20
19
18
17
16
15
14
13
12
11

CURRENT SENSING B
OUTPUT 4
OUTPUT 3
INPUT 4
ENABLE B
INPUT 3
LOGIC SUPPLY VOLTAGE V
GND
INPUT 2
ENABLE A
INPUT 1
SUPPLY VOLTAGE V
OUTPUT 2
OUTPUT 1
CURRENT SENSING A

GND
Sense B
N.C.
Out 4
Out 3
Input 4
Enable B
Input 3
VSS
GND

S

SS

THERMAL DATA

Symbol Parameter PowerSO20 Multiwatt15 Unit

R

th j-case

R

th j-amb

(*) Mountedon aluminumsubstrate

2/13

Thermal Resistance Junction-case Max. – 3
Thermal Resistance Junction-ambient Max. 13 (*) 35 °

°C/W

C/W

PIN FUNCTIONS(referto the block diagram)

MW .15 PowerSO Name Function

1;15 2;19 Sense A; Sense B Between this pin and ground is connected the sense resistorto

control thecurrent of the load.

2;3 4;5 Out 1; Out2 Outputs ofthe Bridge A; the currentthat flows throughthe load

connected between these two pins is monitored at pin 1.

46 V

S

Supply Voltage for the Power Output Stages.
A non-inductive 100nFcapacitor must be connected between this
pin and ground.

5;7 7;9 Input 1; Input 2 TTL CompatibleInputs of the BridgeA.

6;11 8;14 EnableA; Enable B TTL CompatibleEnable Input: theL statedisables the bridge A

(enable A) and/or the bridgeB (enable B).
8 1,10,11,20 GND Ground.
9 12 VSS Supply Voltage forthe Logic Blocks. A100nF capacitor must be

connected between this pin and ground.

10; 12 13;15 Input3; Input 4 TTL CompatibleInputs of the BridgeB.
13; 14 16;17 Out 3; Out 4 Outputs of the BridgeB. The current that flows throughthe load

connected between these two pins is monitored at pin 15.
– 3;18 N.C. NotConnected

ELECTRICALCHARACTERISTICS (VS= 42V; VSS=5V,Tj=25°C;unlessotherwise specified)

L298

Symb o l Parameter Test Co n d ition s Min. Typ. Max. Unit

Supply Voltage(pin 4) Operative Condition VIH+2.5 46 V

V

S

V

Logic SupplyVoltage (pin 9) 4.5 5 7 V

SS

Quiescent SupplyCurrent (pin 4) Ven=H; IL=0 Vi=L

I

S

=L Vi=X 4 mA

V

en

Quiescent Current from VSS(pin 9) Ven=H; IL=0 Vi=L

I

SS

=L Vi=X 6 mA

V

en

Input Low Voltage

V

iL

V

V

i

i

=H

=H

–0.3 1.5 V

13
50

24

7

22
70

36
12

mA
mA

mA
mA

(pins 5, 7, 10, 12)

V

Input High Voltage

iH

2.3 VSS V

(pins 5, 7, 10, 12)

I

Low Voltage Input Current

iL

Vi= L –10

A

µ

(pins 5, 7, 10, 12)

I

High Voltage Input Current

iH

Vi = H≤V

(pins 5, 7, 10, 12)

V

= L EnableLow Voltage (pins 6,11) –0.3 1.5 V

en

= H Enable High Voltage (pins 6, 11) 2.3 V

V

en

=L Low VoltageEnable Current

I

en

Ven= L –10

SS

–0.6V

30 100 µ

SS

A

V

A

µ

(pins 6, 11)

I

=H HighVoltage Enable Current

en

(pins 6, 11)

V

CEsat(H)

V

CEsat(L)

V

V

Source Saturation Voltage IL=1A

Sink SaturationVoltage IL= 1A (5)

TotalDrop IL= 1A (5)

CEsat

SensingVoltage (pins 1, 15) –1 (1) 2 V

sens

=H≤VSS–0.6V

V

en

I

=2A

L

I

= 2A (5)

L

I

= 2A (5)

L

0.95 1.35

0.85 1.2

1.80 3.2

30 100 µ

1.7

2

2.7

1.6

1.7

2.3

4.9

A

V
V

V
V

V
V

3/13

L298

ELECTRICALCHARACTERISTICS (continued)

Symb o l Param et er Test Co n d ition s Min . T yp. Max. U n it

T

) SourceCurrent Turn-off Delay 0.5Vito 0.9IL(2);(4) 1.5

1(Vi

T

) SourceCurrent Fall Time 0.9 ILto 0.1 IL(2);(4) 0.2

2(Vi

) SourceCurrent Turn-on Delay 0.5Vito 0.1IL(2);(4) 2

T

3(Vi

T

) SourceCurrent Rise Time 0.1 ILto 0.9 IL(2);(4) 0.7

4(Vi

T5(Vi) Sink Current Turn-offDelay 0.5Vito 0.9IL(3);(4) 0.7
T6(Vi) Sink Current Fall Time 0.9ILto 0.1 IL(3);(4) 0.25
T7(Vi) Sink Current Turn-onDelay 0.5Vito 0.9IL(3);(4) 1.6
T8(Vi) Sink Current Rise Time 0.1 ILto 0.9 IL(3);(4) 0.2

fc (Vi) Commutation Frequency IL= 2A 25 40 KHz

T

) SourceCurrent Turn-off Delay 0.5Vento 0.9 IL(2); (4) 3

1(Ven

T2(Ven) SourceCurrent Fall Time 0.9 ILto 0.1 IL(2);(4) 1
T3(Ven) SourceCurrent Turn-on Delay 0.5Vento 0.1 IL(2); (4) 0.3
T

) SourceCurrent Rise Time 0.1ILto 0.9 IL(2);(4) 0.4

4(Ven

) Sink Current Turn-off Delay 0.5Vento 0.9 IL(3); (4) 2.2

T

5(Ven

T

) Sink Current Fall Time 0.9 ILto 0.1 IL(3);(4) 0.35

6(Ven

T7(Ven) Sink Current Turn-on Delay 0.5Vento 0.9 IL(3); (4) 0.25
T8(Ven) Sink Current Rise Time 0.1 ILto 0.9 IL(3);(4) 0.1

µs
µ
µs
µ
µ
µ
µ
µs

µs
µ
µs
µ
µs
µ
µ
µ

s

s
s
s
s

s

s

s
s
s

1) 1)Sensingvoltage canbe –1V for t≤50µsec; insteady stateV

2) See fig.2.

3) See fig.4.

4) The loadmust be a pureresistor.

Figure1 : Typical SaturationVoltagevs.Output

Current.

min≥–0.5 V.

sens

Figure2 : SwitchingTimes TestCircuits.

4/13

Note : For INPUT Switching,set EN = H

For ENABLESwitching, set IN = H

L298

Figure3 :

Figure4 :

SourceCurrentDelayTimesvs. InputorEnable Switching.

SwitchingTimes Test Circuits.

Note : For INPUT Switching,set EN = H

ForENABLESwitching, set IN = L

5/13

L298

Figure5 :

SinkCurrent DelayTimes vs. Input 0 V EnableSwitching.

Figure6 : BidirectionalDC MotorControl.

Inpu ts Function

= H C = H ; D = L Forward

V

en

C = L ; D = H Reverse
C = D FastMotor Stop

= L C = X ; D = X FreeRunning

V

en

L = Low H =High X= Don’tcare

MotorStop

6/13

L298

Figure7 : Forhighercurrents,outputscanbe paralleled.Takecareto parallelchannel 1 with channel4

andchannel2 withchannel3.

APPLICATION INFORMATION (Refer to the block diagram)

1.1.POWEROUTPUT STAGE
TheL298integratestwopoweroutputstages(A;B).

The power output stage is a bridge configuration
and its outputscan drive an inductiveload in com­monor differenzialmode,dependingonthestateof
the inputs. The currentthat flows through the load
comesoutfromthe bridgeat the sense output: an
externalresistor(R

SA;RSB

.)allowstodetectthein-

tensityof this current.

1.2.INPUT STAGE
Eachbridgeis drivenby meansof fourgatesthe in-

putof whichareIn1; In2 ; EnA and In3; In4 ; EnB.
TheIninputssetthebridgestatewhenTheEninput
ishigh;a lowstateoftheEninputinhibitsthebridge.
Alltheinputsare TTL compatible.

2.SUGGESTIONS
A non inductivecapacitor,usuallyof 100 nF, must

be foreseen between both Vs and Vss, to ground,
asnearaspossible toGNDpin.Whenthe largeca­pacitorof thepowersupply is too farfrom the IC, a
second smaller one must be foreseen near the
L298.

Thesenseresistor,not of a wirewoundtype, must
begroundednear thenegativepoleofVsthatmust
be nearthe GNDpin of the I.C.

Eachinput must be connectedto the source of the
driving signalsby meansof a veryshortpath.

Turn-OnandTurn-Off:BeforetoTurn-ONtheSup­plyVoltageand beforetoTurnitOFF,theEnablein­put mustbe drivento the Low state.

3.APPLICATIONS
Fig6 showsa bidirectionalDC motorcontrolSche-

maticDiagram forwhichonlyonebridgeisneeded.
Theexternalbridge of diodesD1 to D4 is made by
four fast recovery elements (trr
must be chosen of a VF as low as possibleat the
worstcase of the load current.

Thesenseoutputvoltagecanbeusedtocontrolthe
currentamplitudebychoppingtheinputs,or to pro­videovercurrentprotectionbyswitchinglow theen­ableinput.

The brake function (Fast motor stop) requires that
the Absolute Maximum Rating of 2 Amps must
neverbe overcome.

Whenthe repetitivepeak currentneededfrom the
loadis higher than 2 Amps,a paralleledconfigura­tioncan be chosen(See Fig.7).

An externalbridge of diodes are requiredwhen in­ductiveloadsare drivenandwhenthe inputsof the
ICarechopped;Shottkydiodeswouldbepreferred.

≤ 200 nsec) that

7/13

L298

Thissolutioncandriveuntil3 AmpsInDCoperation
anduntil3.5Amps of a repetitivepeakcurrent.

OnFig8itisshownthedrivingofa twophasebipolar

Fig 10 shows a secondtwo phasebipolar stepper
motorcontrolcircuit where the currentis controlled
bythe I.C.L6506.

steppermotor; the needed signalsto drive the in­puts of the L298 are generated,in this example,
fromtheIC L297.

Fig9 showsan exampleof P.C.B. designedforthe
applicationofFig8.

Figure8 :

TwoPhase BipolarStepperMotorCircuit.

Thiscircuit drivesbipolar steppermotorswithwindingcurrentsup to 2 A. The diodesare fast2 A types.

RS1=RS2= 0.5

D1 to D8 = 2 A Fast diodes

8/13

Ω

VF≤ 1.2 V @ I = 2 A

{

trr≤200 ns

Figure9 : SuggestedPrintedCircuitBoardLayout for the Circuitof fig.8 (1:1scale).

L298

Figure10 : Two PhaseBipolar StepperMotorControlCircuitby UsingtheCurrent ControllerL6506.

RRand R

depend from the load current

sense

9/13

L298

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A5

B 2.65 0.104
C 1.6 0.063
D 1 0.039

E 0.49 0.55 0.019 0.022

F 0.66 0.75 0.026 0.030
G 1.02 1.27 1.52 0.040 0.050 0.060

G1 17.53 17.78 18.03 0.690 0.700 0.710
H1 19.6 0.772
H2 20.2 0.795

L 21.9 22.2 22.5 0.862 0.874 0.886

L1 21.7 22.1 22.5 0.854 0.870 0.886
L2 17.65 18.1 0.695
L3 17.25 17.5 17.75 0.679 0.689 0.699
L4 10.3 10.7 10.9 0.406 0.421 0.429
L7 2.65 2.9 0.104 0.114

M 4.25 4.55 4.85 0.167 0.179 0.191

M1 4.63 5.08 5.53 0.182 0.200 0.218

S 1.9 2.6 0.075 0.102

S1 1.9 2.6 0.075 0.102

Dia1 3.65 3.85 0.144 0.152

mm inch

0.197

0.713

OUTLINEAND

MECHANICALDATA

Multiwatt15 V

10/13

L298

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A5
B 2.65 0.104

C 1.6 0.063

E 0.49 0.55 0.019 0.022
F 0.66 0.75 0.026 0.030

G 1.14 1.27 1.4 0.045 0.050 0.055

G1 17.57 17.78 17.91 0.692 0.700 0.705

H1 19.6 0.772
H2 20.2 0.795

L 20.57 0.810
L1 18.03
L2 2.54
L3 17.25 17.5 17.75 0.679 0.689
L4 10.3 10.7 10.9 0.406 0.421 0.429
L5 5.28 0.208
L6 2.38
L7 2.65 2.9 0.104 0.114

S 1.9 2.6 0.075 0.102

S1 1.9 2.6 0.075 0.102

Dia1 3.65 3.85 0.144 0.152

mm inch

0.197

0.710

0.100

0.699

0.094

OUTLINE AND

MECHANICAL DATA

Multiwatt15 H

11/13

L298

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

mm inch

A 3.6 0.142
a1 0.1 0.3 0.004
a2 3.3

0.012

0.130

a3 0 0.1 0.000 0.004

b 0.4 0.53 0.016 0.021
c 0.23 0.32 0.009 0.013

D (1) 15.8 16 0.622 0.630

D1 9.4 9.8 0.370 0.386

E 13.9 14.5 0.547 0.570

e 1.27 0.050

e3 11.43 0.450

E1 (1) 10.9 11.1 0.429 0.437

E2 2.9

0.114

E3 5.8 6.2 0.228 0.244

G 0 0.1 0.000 0.004

H 15.5 15.9 0.610 0.626

h 1.1

0.043

L 0.8 1.1 0.031 0.043
N10°(max.)
S

8°(max.)

T 10 0.394

(1) ”D andF” donot include moldflash or protrusions.

- Moldflash orprotrusions shall not exceed0.15 mm (0.006”).

- Criticaldimensions: ”E”, ”G” and ”a3”

OUTLINE AND

MECHANICAL DATA

JEDEC MO-166

PowerSO20

E2

hx

45

DETAIL B

BOTTOM VIEW

R

a3

Gage Plane

lead

E

DETAIL B

0.35

S

D1

a1

L

c

DETAIL A

slug

-C-

SEATING PLANE

GC

(COPLANARITY)

E3

NN

a2

A

b

DETAIL A

e3

H

D

T

1

e

1120

E1

10

PSO20MEC

12/13

L298

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13/13