SGS Thomson Microelectronics L9997ND Datasheet



HALFBRIDGE OUTPUTS WITH TYPICAL
R

= 0.7Ω

ON

OUTPUTCURRENT CAPABILITY±1.2A
OPERATING SUPPLY VOLTAGE RANGE 7V

TO 16.5V
SUPPLY OVERVOLTAGE PROTECTION

FUNCTIONFOR V

UP TO 40V

VS

VERY LOW QUIESCENT CURRENT IN
STANDBYMODE < 1µA

CMOS COMPATIBLE INPUTS WITH HYS­TERESIS

OUTPUTSHORT-CIRCUIT PROTECTION
THERMALSHUTDOWN
REAL TIME DIAGNOSTIC: THERMAL OVER-

LOAD, OVERVOLTAGE

L9997ND

DUAL HALF BRIDGE DRIVER

MULTIPOWER BCD TECHNOLOGY

SO20 (12+4+4)

ORDERING NUMBERS:

L9997ND

L9997ND013TR

DESCRIPTION

The L9997ND is a monolithic integrated driver, in
BCD technology intended to drive various loads,

BLOCK DIAGRAM

VS VS

1

EN

IN1

IN2

10

12

9

ENABLE

REFERENCE

BIAS

including DC motors. The circuit is optimized for
automotiveelectronicsenviromental conditions.

DIAG

11

PROTECTION

FUNCTIONS

DRIVER 1

DRIVER 2

VS

OUT1

19

VS

OUT2

2

5V

M

April 1999

GND

4...7,1 4...17

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L9997ND

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V

V

V

I

VSDC

VSP

I

OUT

IN1,2

V

EN

DIAG

I

OUT

DIAG

DC Supply Voltage -0.3 to 26 V
Supply VoltagePulse (T < 400ms) 40 V
DC Output Current ±1.8 A
DC Input Voltage -0.3 to 7 V
Enable Input Voltage -0.3 to 7 V
DC Output Voltage -0.3 to 7 V
DC Output Short-circuit Current -0.3V < V

OUT<VS

+ 0.3V internally limited

DC Sink Current -0.3V< VDG< 7V internally limited

PIN CONNECTION

(Topview)

V

S

OUT2

N.C.
GND
GND
GND
GND

N.C.

IN2 IN1

EN DIAG

2
3
4
5
6
7
8
9
10

D95AT166

20
19
18
17
16
15
14
13
12
11

N.C.1
OUT1
N.C.
GND
GND
GND
GND
N.C.

PIN FUNCTIONS

N. Name Function

1 VS Supply Voltage
2 OUT2 Channel 2: Push-Pull power output with intrinsic body diode

3, 8, 13,

18,20

4to7,

14 to 17

9 IN2 Input 2: Schmitt Trigger input with hysteresis(non-inverting signalcontrol)

10 EN Enable: LOW or not connected on thisinput switchesthe device into standby mode andthe

11 DIAG Diagnostic: Open Drain Output thatswitches LOW if overvoltage or overtemperature is

12 IN1 Input 1: Schmitt Trigger input with hysteresis(non-inverting signalcontrol)

NC NC: Not Connected

GND Ground: signal - and power - ground, heat sink

outputs into tristate

detected

THERMAL DATA

Symbol Parameter Value Unit

T

jTS

T

jTSH

R

th j-amb

R

th j-pins

(1) With6cm2on board heatsink area.

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Thermal Shut-down Junction Temperature 165 °C
Thermal Shut-down Threshold Hysteresis 25 K
Thermal Resistance Junction-Ambient

(1)

50 K/W

Thermal Resistance Junction-Pins 15 K/W

L9997ND

ELECTRICALCHARACTERISTICS (7V < VS< 16.5V;-40°C< TJ< 150°C;unlessotherwisespecified.)

Symbol Parameter Test Condition Min. Typ. Max. Unit

I

VS_SB

I

VS

V

ENL

V

ENH

V

ENthh

I

EN

V

IN1,2L

V

IN1,2H

V

IN1,2thh

I

IN1,2

R

ON OUT1,2

|I

OUT1,2

V

DIAG

V

VSOVth

t

ONLH

t

ONHL

t

OFFHL

t

OFFLH

t

dHL

t

dLH

t

rHS

t

rLS

t

fHS

t

fLS

* Tested at 125°C and guaranteedby correlation

Quiescent Currentin Standby
Mode

Supply Current EN = HIGH, I

VEN< 0.3V;VVS<16.5V;Tj< 85°(*)
V

=0; VVS= 14.5V; Tj =25°C

EN

=0 2 6 mA

OUT1,2

<1
<1

90
10

µA
µA

Low Enable Voltage 1.5 V
High Enable Voltage 3.5 6 V
Enable Threshold Hysteresis 1 V
Enable Input Current VEN= 5V 85 250 µA
Low Input Voltage 1.5 V
High Input Voltage 3.5 V
Input Threshold Hysteresis 1 V
Input Bias Current VIN=0

V

= 5V, EN = HIGH

IN

ON-Resistance to Supply or
GND

I

= ±0.8A; VVS= 7V; Tj= 125°C

OUT

I

= ±0.8A;VVS=12V;Tj= 125°C

OUT

I

= ±0.8A; VVS= 12V; Tj=25°C

OUT

-3
2

0

10

1.2

1.1

1

50

2.8

2.25

µA
µA

0.7

| Output CurrentLimitation 1.2 1.6 2.2 A

Diagnostic OutputDrop I

= 0.5mA, EN = HIGH

DIAG

0.6 V
Overvoltage orThermal Shut­down

Supply Overvoltage

17 19 21 V

Threshold
Turn on Delay Time See Fig. 2; VVS= 13.5V

Measured with 93Ωload

50 150 µs
30 150 µs

Turn off Delay Time 10 100

220µs
Rising Delay Time 115 250
Falling Delay Time 115 250 µs
Rise Time 30 100

60 150 µs

Fall Time 25 100

50 150 µs

Ω
Ω
Ω

s

µ

s

µ

s

µ

s

µ

FUNCTIONAL DESCRIPTION

The L9997ND is a motor driver two half-bridge

outputs, intended for driving dc motorsin automo­tive systems. The basic function of the device is
shownin the Table1.

Table 1. Table function.

Status EN IN1 IN2 OUT1 OUT2 DIAG NOTE

1 L X X Tristate Tristate OFF Standby Mode
2 H H H SRC SRC OFF Recommended for braking
3 H H L SRC SNK OFF
4 H L H SNK SRC OFF
5 H L L SNK SNK OFF
6 H X X Tristate Tristate ON Overvoltage or Overtemperature

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