Datasheet L9338 Datasheet (SGS Thomson Microelectronics)



WIDE INPUT VOLTAGE RANGE FROM -24V
UP TO +45V

WIDE OPERATING SUPPLY VOLTAGE
RANGEFROM 4.5VUP TO32V

REVERSEBIASINGPROTECTED(V

= -24V)

S

VERY LOW STANDBY QUIESCENT CUR­RENT < 2µA

PROGRAMMABLE SIGNAL TRANSFER PO­LARITY

TTL AND CMOS COMPATIBLEINPUTS
DEFINED OUTPUT OFF STATE OFF FOR

OPEN INPUTS
FOUR OPEN DRAIN DMOS OUTPUTS, WITH

= 1.5Ωat 25°Cand VS>6V

R

DSon

OUTPUTCURRENT LIMITATION
CONTROLLEDOUTPUTSLOPEFORLOWEMI
OVERTEMPERATURESHUT-DOWN
INTEGRATED OUTPUT CLAMPING FOR

FASTINDUCTIVERECIRCULATIONV

FB

>45V

STATUSMONITORINGFOR

- OVERTEMPERATURE

- DISCONNECTED GROUND OR SUPPLY

L9338

QUAD LOW SIDE DRIVER

ORDERING NUMBERS: L9338D (SO20)

L9338MD (SO20 (12+4+4))

VOLTAGE

ESD: ALL PINS ARE GUARANTEED TILL2kV
HUMANBODYMODEL

DESCRIPTION

The L9338 is a monolithic integrated quad low
side driver realized in advanced Multipower-BCD
technology. It is intended to drive lines, lamps or
relais in automotiveor industrialapplications.

BLOCK DIAGRAM

IN1

PRG

EN

March 2000

CHANNEL 4IN4

CHANNEL 1

=&

THERMAL

SHUTDOWN

4

DIAGNOSTIC

LOGIC

Vint

REFERENCE

VSGND

Vlogic

OUT4

OUT1

DIAG

D95AT149

1/8

L9338

ABSOLUTE MAXIMUM RATINGS

(nodamage or latch)

Symbol Parameter Value Unit

V

S

Supply voltage -24 to 45 V

Pin voltages

V

IN

V

OUT

V

DIAG

PIN CONNECTIONS

N.C.

N.C.

OUT4
OUT3

GND N.C.

N.C. N.C.

Input, enable, program -24 to 45 V
Output -0.3 to 45 V
Diagnostic output -0.3 to 45 V

(Top view)

20
19
18
17
16
15
14
13
12
11

VS

IN3
IN4

EN

2
3
4
5
6
7
8
9
10

D94AT120B

20
19
18
17
16
15
14
13
12
11

N.C.1
DIAG
N.C.
IN2
IN1
PRG
OUT1
OUT2

IN1
IN2

DIAG

GND
GND
GND
GND

VS
IN3 OUT4
IN4 EN

2
3
4
5
6
7
8
9
10

D94AT121A

PRG1
OUT1
OUT2
GND
GND
GND
GND
OUT3

PIN DESCRIPTION

SO20

N

o

2 8 VS SUPPLY VOLTAGE
9 4,5,6,7,14,

6 11 EN ENABLE
15 20 PRG PROGRAM
19 3 DIAG DIAGNOSTIC
16 1 IN1 INPUT 1
17 2 IN2 INPUT 2

4 9 IN3 INPUT 3

5 10 IN4 INPUT 4
14 19 OUT 1 OUTPUT 1
13 18 OUT 2 OUTPUT 2

8 13 OUT 3 OUTPUT 3

7 12 OUT 4 OUTPUT 4

3, 18, 1, 10, 11,

12, 20

SO20

SO 12+4+4

N

o

Pin Name Function

GND GROUND

15,16,17

– NC NOT CONNECTED

SO20 (12+4+4)

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L9338

THERMAL DATA

Symbol Parameter SO20 (2) SO(12+4+4) (1) Unit

R

th (j-pins)

R

th (j-amb)

T

jMon

(1) See SGS-THOMSON Microelectronics databook:”Thermal Management in Surface Mount Technology”
(2) See SGS-THOMSON Microelectronics databook:”Thermal characteristics of SO20”

OPERATING CONDITIONS (The electrical characteristics are valid within the below defined operating

ranges,unlessotherwisespecified.The functionwillbe guarantedby designuntilT

Symbol Parameter Value Unit

V

S

V

IN

V

EN

V

OUT,VD

T

j

Thermal resistance junction to pin – 14 (Typ.) °C/W
Thermal resistance junction to ambient mounted on

77 to 97 – °C/W

SMPCB2 board
Temperature-monitoring

Switch-off-level
Switch-on-level

160 to 190
140 to 170

jMON

°C
°C

switch-OFF-level.

Supply Voltage 4.5 to 32 V
Input pin voltage -24 to 45 V
Enable pin voltage -24 to 45 V
Output pin voltage -0.3 to 45 V
Junction temperature -40 to 150 °C

ELECTRICALCHARACTERISTICS

(Refer to the test circuit, unless otherwise specified.)

Symbol Parameter Test Condition Min. Typ. Max. Unit

I

Q

Quiescent current -0.3V ≤ VEN≤ 0.5V;

V

= 14V; Tj=85°C

S

EN = high; V

≤ 14V 1.5 2 mA

S

<2 10 µA

Inputs IN1 -IN4, PRG

V

V

INIlow
INhigh

I

IN

Input voltage LOW -24 2.0 V
Input voltage HIGH 2.8 45 V
Input current -24V ≤ Vi ≤ 10V -10 15 µA

Enable Input EN

V

V

ENhigh

R

ENlow

EN

I

EN

Input voltage LOW -24 1 V
Input voltage HIGH 3.2 VS V
Input impedance -24V < Vi< 2.5V 10 K
Input current 2.5V ≤ Vi ≤ 25V 20 50 µA

Outputs OUT1-OUT4

R

DSon

I

OLeak

V

OClamp

I

OSC

C

O

Output ON-resistor to ground VS≥ 6V, IO= 0.3A

T

=25°C

j

T

= 125°C

j

1.7 2.3

3.5
Leakage current VO=VS= 14V; Tj=85°C ≤15µA
Output voltage during clamping time < 200µs; 10mA ≤ Io≤ 0.3A 45 52 60 V
Short-circuit current 400 700 1200 mA
Internal output capacities V

4.5V 100 pF

≥

O

Diagnostic output DIAG

V

Dlow

I

Dmax

I

Dleak

Output voltage LOW IDL≤ 1mA 0.3 0.5 V
Max. Output current Internal current limitation 1 5 15 mA
Leakage current VS= 14V; TJ=85°C

0.1 1

≤

Ω

Ω
Ω

A

µ

3/8

L9338

ELECTRICALCHARACTERISTICS

(Continued)

Symbol Parameter Test conditions Min. Typ. Max. Unit

Timing

t

d,on

t

d,off

t

set

t

d,DIAG

S

out

(see Fig. 1)

On delay time VS= 14V, C
Off delay time 3 4.5

10mA ≤ I

ext

≤ 200mA

O

= 0pF

2.5 3.5

Enable settling time 10 µs
On or Off diagnostic delay time 10 µs
Output slopes 2.5 9 16 V/µs

Figure 1

V

EN

V

INhigh

V

INlow

active

t

V

PRG

s

µ

s

µ

V

INhigh

V

INlow

V

V

INhigh

V

INlow

V

1/2V

IN

OUT

V

S

S

Non-Inverting Mode

t

set

t

d,offtd,on

No controlled output slope for enable low

t

d,off

Inverting Mode

t

d,on

t

d,off

t

d,on

D95AT150

t

t

t

t

set

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L9338

CIRCUIT DESCRIPTION

The L9838 is a quad low side driver for lines,
lamps orinductive loads in automotive and indus­trial applications.

All INputs are TTL or CMOS compatible. This al­lows the device to be driven directly by a micro­controller. For the noiseimmunity, all inputs have
a Schmitt-triggerwith a hysteresis of typ. 100mV.
Each input stage has an input voltage protection
from -24V to 45V. The device can be activated
with a ’high’ signal on ENable input. ENable ’low’
switches the device into the sleep mode. In this
mode the quiescent current is less than 10µA. A
high signal on PRoGramming input changes the
signal transfer polarity from noninverting into the
inverting mode. Normally this pin is connected to

or GND. These pins (PRG and EN) are inter-

V

S

nally fixed at low status by open input condition.
Independent of the PRoGramming input, the
OUTput switches off, if the signal INput pin is not
connected.

Each output driver has a current limitation of min

0.4A and a seperatethermal shut-down.The ther­mal shut-down deactivates that output which ex-

ceeds Temperature switch off level. About 20K
below this temperature threshold the output will
be activatedagain. This means, that each output
is able to sink continuously 285mA without acti­vating thermal shut-down at 85°C ambient tem-
perature (SO20). The slew rate of the output is
limited to max. 14V/µs to reduce the electromag­netic interference, but not for the enable transfer
characteristic(see fig. 1). An integratedactive fly­back voltage limitation clamps the output voltage
during the flyback phaseof inductive loads to typ.
50V. The power DMOS switchesON, if thedevice
is enabledand the OUTput swings below ground.
This protection avoids the activation of parasitics
inside the power DMOS.

The DIAGnosticis anopen drain output. The logic
status depends on the PRoGramming pin. If the
PRG pin is ’low’ the DIAG output becomes low, if
the device works correctly.

At thermal shut-down of one channel, discon­nected ground or supply voltage the DIAGnostic
output becomes high. If the PRG pin is ’high’ this
output is switched off at normal function and
switchedon at overtemperature.

DIAGNOSTICTABLE

Pins EN PRG IN OUT DIAG

Normal function H L L L (on) L (on)

H L H H (off) L (on)
H H L H (off) H(off)
HHHL(on) H(off)
L X X H (off) H(off)

Overtemperature,
disconnected ground or
supply voltage

Overtemperature H H X H (off) * L (on)

X = not relevant * selective for each channel at overtemperature

H L X H (off) * H (off)

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L9338

Figure 2: Applicationcircuit for inverting transferpolarity.

BOARD VOLTAGE 14 V

VCC = 5V

10µF

VCC

INT

8

D0
D1
D2
D3

MICROCONTROLLER

GND

VS

PRG

GND

DIAG

2 W 12 mH

OUT 1
OUT 2
OUT 3
OUT 4

50 kHz

AdressdecoderA 0:8

EN

IN 1
IN 2
IN 3
IN 4

10µH

M

250 mA

240Ω

50pF

VCC = 5V

VCC

IN

GND

6/8

L9338

DIM.

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

A 2.35 2.65 0.093 0.104

A1 0.1 0.3 0.004 0.012

B 0.33 0.51 0.013 0.020

C 0.23 0.32 0.009

D 12.6 13 0.496 0.512

E 7.4 7.6 0.291 0.299

e 1.27 0.050

H 10 10.65 0.394 0.419

h 0.25 0.75 0.010 0.030

L 0.4 1.27 0.016 0.050

K0°(min.)8° (max.)

mm inch

0.013

OUTLINE AND

MECHANICAL DATA

SO20

B

e

D

1120

110

L

hx45°

A

K

A1

C

H

E

SO20MEC

7/8

L9338

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