MC33385 Datasheet, PDF (1/11 Pages) Motorola, Inc – Automotive Quad Low Side Driver

MOTOROLA
SEMICONDUCTO^FrR^eescale
Semiconductor,
Inc_M. _C33385
Automotive Quad
Low Side Driver
QUAD LOW SIDE DRIVER
SEMICONDUCTOR
TECHNICAL DATA
The MC33385 is a Quad Low Side Driver fully protected switch. This
device is a general purpose Low Side Driver but has been especially
designed to operate in engine management application as injector
driver or automotive gear box. It is interfaced directly with a
microcontroller for parallel control of the load and the individual output
diagnostic is done through a SPI. The diagnostic logic recognizes 4
failure types at each output stage the overcurrent, the short to GND, the
openload and the over-temperature.
• RDSON of 250mΩ per Output at 25°C
• Supplied from the main 5V Vcc
• Input CMOS Compatible
• Diagnostic through SPI
• Nominal Current of 2A per Output
• Current Limitation at 3A with Automatic Turn Off
• Output Internally Clamped at 50V typ for Inductive Load Drive
• Junction to Case Thermal Resistance of 4.4°C/W
• Individual Output over Temperature Shutdown
DH SUFFIX
HSOP20 PACKAGE
PIN ASSIGNMENT
GND2 1
OUT2 2
N.C 3
NON2 4
SDI 5
CLK 6
NCS 7
NON4 8
OUT4 9
GND4 10
21
Heat sink
21
20 GND1
19 OUT1
18 N.C
17 NON1
16 SDO
15 NRES
14 VCC
13 NON3
12 OUT3
11 GND3
ORDERING INFORMATION
Device
MC33385DH
Temperature
Range
-40°C to +125°C
Package
HSOP20
Simplified Block Diagram
NON1
NON2
NON3
NON4
URES
RES
RES
URES
VCC
FR Reset
IRES
TRIGGER
S
R
VCC
Charge Pump
DRIVER
ON1
I-SCB filter
t-ISCB
dv/dt control
Over-temp. detection
OUT1
OUT2
OUT3
OUT4
SDI
VCC
CLK
NCS
VCC
IRES
Shift
Register
SDO
Failure
Register
(FR)
ON1
I-OL filter
t-IOL
NON1
SCG filter
t-SCG
URES
RES
V _{ref OSC}
Under Voltage
Reset
Reset
Oscillator
For More Information On This Product,
Go to: www.^Gf^Nre^D escale.co^Nm^RES
© Motorola,Inc 1999
Rev 5.1