L9337MD
TRIPLE 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 POLARITY
TTL AND CMOS COMPATIBLE INPUTS
DEFINED OUTPUT OFF STATE OFF FOR
OPEN INPUTS
THREE OPEN DRAIN DMOS OUTPUTS,
WITH RDSon = 1.5 Ω at 25°C and VS > 6V
OUTPUT CURRENT LIMITATION
CONTROLLED OUTP UT SLOPE F OR LOW EMI
OV ERTEMPE R A TURE SHUT- D O W N
INTEGRATED OUTPUT CLAMPING FOR
FAST INDUCTIVE RECIRCULATION VFB > 45V
STATUS MONITORING FOR
- O VERTEMPER ATURE
- DISCONNECTE D GR OUND OR SUPP LY
VOLTAGE
ESD: ALL PINS ARE GUARANTEED TILL 2kV
HUMAN BODY MODEL
DESCRIPTION
The L9337MD is a monolithic integrated triple 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
4
REFERENCE
Vint
Vlogic
CHANNEL 3
IN1
PRG
EN
VSGND
OUT1
DIAG
D97AT370
BLOCK DIAGRAM
SO20 (12+4+4)
ORDERING NUMBER: L9337MD
1/8
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
SO 12+4+4
NoPin Name Function
8 VS SUPPLY VOLTAGE
4,5,6,7,14,
15,16,17 GND GROUND
11 EN ENABLE
20 PRG PROGRAM
3 DIAG DIAGNOSTIC
1 IN1 INPUT 1
2 IN2 INPUT 2
9 IN3 INPUT 3
19 OUT 1 OUTPUT 1
18 OUT 2 OUTPUT 2
13 OUT 3 OUTPUT 3
10, 12 NC NOT CONNECTED
IN1
IN2
DIAG
GND
GND
GND
GND
VS
IN3 NC
OUT3
GND
GND
GND
GND
OUT2
OUT1
PRG1
3
2
4
5
6
7
8
9
18
17
16
15
14
12
13
11
19
10
20
NC EN
D97AT371A
PIN C ONNECTIONS (Top view)
L9337MD
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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 circuit, unless otherwise 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 - IN3, 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-OUT3
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
V
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
L9337MD
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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
V
EN
V
INhigh
V
INlow
active
t
V
PRG
V
INhigh
V
INlow
Inverting Mode
t
Non-Inverting Mode
V
IN
V
INhigh
V
INlow
t
V
OUT
1/2V
S
t
V
S
tset td,off td,on td,off td,on td,off td,on tset
D95AT150
No controlled output slope for enable low
Figure 1
L9337MD
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CIRCUIT DESCRIPTION
The L9337 is a triple 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 10V. 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 works 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
L9337MD
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IN
OUT 1
OUT 2
OUT 3
IN 1
IN 2
IN 3
GND
VS
PRG
EN DIAG
AdressdecoderA 0:8
D 0
D 1
D 2
D 3
8
VCC = 5V
VCC
GND
MICROCONTROLLER
INT
BOARD VOLTAGE 14 V
2 W 12 mH
50 kHz
VCC
GND
VCC = 5V
10
µ
F
240 Ω
50pF
10µ
H
Figure 2: Application circuit for inverting transfer polarity.
L9337MD
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110
1120
A
e
B
D
E
L
KH
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
L9337MD
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are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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L9337MD
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