L9338 - STMicroelectronics

L9338

QU AD LOW SIDE DRIVER

WIDE INPUT VOLTAGE RANGE FROM -24V

UP TO +45V

WIDE OPERATING SUPPLY VOLTAGE

RANGE FROM 4.5V UP TO 32V

REVERSE BIASING PROTECTED (VS = -24V)

VERY LOW STANDBY QUIESCENT CUR-

RENT < 2µA

PROGRAMMABLE SIGNAL TRANSFER PO-

LARITY

TTL AND CMOS COMPATIBLE INPUTS

DEFINED OUTPUT OFF STATE OFF FOR

OPEN INPUTS

FOUR OPEN DRAIN D MOS OUTPUTS, WITH

RDSon = 1.5 Ω at 25°C and VS > 6V

OUTPUT CURRENT LIMITATION

CONT RO LLED OUTPUT SLOPE FOR LO W EMI

OV ERTE MPE R A TURE SHU T- DO W N

INTEGRATED OUTPUT CLAMPING FOR

FAST INDUCTIVE RECIRCULATION V FB > 45V

STATUS MONITORING FOR

- O VERTE MPERATUR E

- D ISCONNE CT ED GROUND O R SUPPLY

VOLTAGE

ESD: ALL PINS ARE GUARANTEED TILL 2kV

HUMAN BO DY MO DEL

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 automotive or industrial applications.

March 2000

= &

THERMAL

SHUTDOWN

CHANNEL 1

DIAGNOSTIC

LOGIC

REFERENCE

Vint

Vlogic

CHANNEL 4IN4

IN1

PRG

VSGND

OUT4

OUT1

DIAG

D95AT149

BLOCK DIAGRAM

ORDERING NUMBERS: L9338D (SO20)

L9338MD (SO20 (12+4+4))

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ABSOLUTE MAXIMUM RATINGS (no damage or latch)

Symbol Parameter Value Unit

VSSupply voltage -24 to 45 V

Pin voltages

VIN Input, enable, program -24 to 45 V

VOUT Output -0.3 to 45 V

VDIAG Diagnostic output -0.3 to 45 V

PIN DESCRIPTION

SO20

NoSO 12+4+4

NoPin Name Function

2 8 VS SUPPLY VOLTAGE

9 4,5,6,7,14,

15,16,17 GND GROUND

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 – NC NOT CONNECTED

PIN C ONNECTIONS (Top view)

N.C.

IN3

IN4

OUT4

OUT3

GND N.C.

OUT2

OUT1

IN1

PRG

IN2

N.C.

DIAG

N.C.1

N.C. N.C.

D94AT120B

SO20

IN1

IN2

DIAG

GND

IN3 OUT4

OUT3

GND

OUT2

OUT1

PRG1

IN4 EN

D94AT121A

SO20 (12+4+4)

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THERMAL DATA

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

Rth (j -pi n s) Thermal resistance junction to pin – 14 (Typ.) °C/W

Rth (j-amb) Thermal resistance junction to ambient mounted on

SMPCB2 board 77 to 97 – °C/W

TjMon Temperature-monitoring

Switch-off-level

Switch-on-level 160 to 190

140 to 170 °C

°C

(1) See SGS-THO MSO N Micr oelec tronics dat abook:" Ther mal Manageme nt in Surfa ce Mount Tec hnology"

(2) See SGS-THO MSO N Micr oelec tronics dat abook:" Ther mal charact er i stic s of SO20"

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

ranges, unless otherwise specified. The function will be guaranted by design until TjMON switch-OFF-level.

Symbol Parameter Value Unit

VSSupply Voltage 4.5 to 32 V

VIN Input pin voltage -24 to 45 V

VEN Enable pin voltage -24 to 45 V

VOUT, VDOutput pin voltage -0.3 to 45 V

TjJunction temperature -40 to 150 °C

ELECTRICA L CHARACTERI STICS (Refer to the test c ircuit, unless otherwis e specified.)

Symbol Parameter Test Condition Min. Typ. Max. Unit

IQQuiescent current -0.3V ≤ VEN ≤ 0.5V;

VS = 14V; Tj = 85°C<2 10 µA

EN = high; VS ≤ 14V 1.5 2 mA

Inputs IN1 - IN4, PRG

VINIlow Input voltage LOW -24 2.0 V

VINhigh Input voltage HIGH 2.8 45 V

IIN Input current -24V ≤ Vi ≤ 10V -10 15 µA

Enable Input EN

VENlow Input voltage LOW -24 1 V

VENhigh Input voltage HIGH 3.2 VS V

REN Input impedance -24V < Vi < 2.5V 10 KΩ

IEN Input current 2.5V ≤ Vi ≤ 25V 20 50 µA

Outputs OUT1-OUT4

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

Tj = 25°C

Tj = 125°C1.7 2.3

3.5 Ω

Ω

IOLeak Leakage current VO = VS = 14V; Tj = 85°C≤15µA

OClamp Output voltage during clamping time < 200µs; 10mA ≤ Io ≤ 0.3A 45 52 60 V

IOSC Short-circuit current 400 700 1200 mA

COInternal output capacities VO ≥ 4.5V 100 pF

Diagnostic output DIAG

VDlow Output voltage LOW IDL ≤ 1mA 0.3 0.5 V

IDmax Max. Output current Internal current limitation 1 5 15 mA

IDleak Leakage current VS = 14V; TJ = 85°C≤ 0.1 1 µA

L9338

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ELECTRICA L CHARACTERI STICS (Continued)

Symbol Parameter Test conditions Min. Typ. Max. Unit

Timing (see Fig. 1)

td,on On delay time VS = 14V, Cext = 0pF

10mA ≤ IO ≤ 200mA 2.5 3.5 µs

td,off Off delay time 3 4.5 µs

tset Enable settling time 10 µs

td,DIAG On or Off diagnostic delay time 10 µs

Sout Output slopes 2.5 9 16 V/µs

INhigh

INlow

active

PRG

INhigh

INlow

Inverting Mode

Non-Inverting Mode

INhigh

INlow

OUT

1/2V

tset td,off td,on td,off td,on td,off td,on tset

D95AT150

No controlled output slope for enable low

Figure 1

L9338

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CIRCUIT DESCRIPTION

The L9838 is a quad low side driver for lines,

lamps or inductive loads in automotive and indus-

trial applications.

All INputs are TTL or CMOS compatible. This al-

lows the device to be driven directly by a micro-

controller. For the noise immunity, all inputs have

a Schmitt-trigger with 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

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

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 seperate thermal shut-down. The ther-

mal shut-down deactivates that output which ex-

ceeds Temperature switch off level. About 20K

below this temperature threshold the output will

be activated again. This means, that each output

is able to sink continuously 285mA without acti-

vating 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 electromag-

netic interference, but not for the enable transfer

characteristic (see fig. 1). An integrated active fly-

back voltage limitation clamps the output voltage

during the flyback phase of inductive loads to typ.

50V. The power DMOS switches ON, if the device

is enabled and the OUTput s wings below ground.

This protection avoids the activation of parasitics

inside the power DMOS.

The DIAGnostic is an open drain output. The logic

status depends on the PRoGramming pin. If the

PRG pin is ’low’ the DIAG output becomes low, if

the device wor k s correctly.

At thermal shut-down of one channel, discon-

nected ground or supply voltage the DIAGnostic

output becomes high. If the PRG pin is ’high’ this

output is switched off at normal function and

switched on at overtemperature.

DIAGNOSTIC TABLE

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

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

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

X = not relevant * selective for each channel at overtemperature

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OUT 1

OUT 2

OUT 3

OUT 4

IN 1

IN 2

IN 3

IN 4

GND

PRG

EN DIAG

AdressdecoderA 0:8

D 0

D 1

D 2

D 3

VCC = 5V

VCC

GND

MICROCONTROLLER

INT

BOARD VOLTAGE 14 V

2 W 12 mH 250 mA

50 kHz

VCC

GND

VCC = 5V

10 µF

240Ω

50pF

10 µH

Figure 2: Application circuit for inverting transfer polarity.

L9338

6/8

110

1120

A1 C

SO20MEC

h x 45˚

SO20

DIM. mm inch

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 0.013

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

K 0˚ (min.)8˚ (max.)

OUTLINE AND

MECHANICAL DATA

L9338

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subj ect to change without notic e. This public ation supers edes and rep laces all informat ion p reviousl y supplied. STMi croelec tron ics product s

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