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Motorola Electronic Components Datasheet

MC33091A Datasheet

HIGH-SIDE TMOS DRIVER

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High-Side TMOS Driver
The MC33091A is a High–Side TMOS Driver designed for use in harsh
automotive switching applications requiring the capability of handling high
voltages attributed to load and field dump transients, as well as reverse and
double battery conditions. Few external components are required to drive a
wide variety of N–Channel TMOS devices. The MC33091A, driving an
appropriate TMOS device, offers economical system solutions for high–side
switching large currents. The MC33091A has CMOS compatible input
control, charge pump to drive the TMOS power transistor, basic fault
detection circuit, VDS monitoring circuit used to detect a shorted TMOS load,
and overcurrent protection timer with associated current squaring circuitry.
Short circuit protection is made possible by having a unique VDS voltage
to current converter drive an externally programmable integrator circuit. This
circuit affords fast detection of a shorted load while allowing difficult loads,
such as lamps having high in–rush currents, additional time to turn on.
The Fault output is comprised of an open collector NPN transistor
requiring a single pull–up resistor for operation. A fault is reported whenever
the MOSFET on–current exceeds an externally programmed set level.
The MC33091A is available in the plastic 8–Pin DIP package as well as
the plastic 8–Pin surface mount package.
Designed for Automotive High–Side Driver Applications
Works with a Wide Variety of N–Channel Power MOSFETs
Drives Inductive Loads with No External Clamp Circuitry Required
CMOS Logic Compatible Input Control
On–Board Charge Pump with No External Components Required
Shorted Load Detection and Protection
Forward Overvoltage and Reverse Battery Protection
Load and Field Dump Protection
Extended Operating Temperature Range
Fault Output to Report a MOSFET Overcurrent Condition
MC33091A
HIGH–SIDE
TMOS DRIVER
SEMICONDUCTOR
TECHNICAL DATA
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
MC33091A
Input
7+
Simplified Block Diagram
RX
2 DRN
Overvoltage
Shutdown
RS
CS 5 VCC
Charge
Pump
+VS
Current
Squaring
Circuit
ISQ
Fault
6
QS +
QR
+
+
Gate
4
SRC
1
Load
3 Gnd
8 VT
RT CT
This device contains 54 active transistors.
MOTOROLA ANALOG IC DEVICE DATA
PIN CONNECTIONS
SRC 1
DRN 2
Gnd 3
Gate 4
8 VT
7 Input
6 Fault
5 VCC
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range Package
MC33091AD
SO–8
MC33091AP TA = – 40° to +125°C Plastic DIP
© Motorola, Inc. 1996
Rev 0
1


Motorola Electronic Components Datasheet

MC33091A Datasheet

HIGH-SIDE TMOS DRIVER

No Preview Available !

MC33091A
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Supply Voltage (Pin 5) (Note 1)
Continuous (Without Activating Clamp)
VCC
–0.7 to 28
7.0 to 28
V
Continuous Supply Clamp Current (Pin 5)
DIP Package (Case 626)
SO–8 Package (Case 751)
IC mA
10
1.0
Input Control Voltage Range (Pin 7)
Continuous
Vin V
–0.7 to 28
Fault Pull–Up Voltage Range (Pin 6)
Continuous
Vout
–0.7 to 28
V
Minimum ESD Voltage Capability (Note 2)
ESD
2000
V
Operating Junction Temperature
Storage Temperature
Operating Ambient Temperature Range
Thermal Resistance, Junction–to–Ambient
DIP Package (Case 626)
SO–8 Package (Case 751)
TJ
Tstg
TA
RθJA
150
–65 to +150
–40 to +125
100
145
°C
°C
°C
°C/W
NOTES: 1. An internal zener diode is incorporated to protect the device from overvoltage transients in excess
of 30 V.
2. ESD testing performed in accordance with Human Body Model (C = 100 pF, R = 1500 ).
Figure 1. Typical Application
MC33091A
Input
7
+5.0 V
+
2.6 V
40 V
9.1 k
Fault
6 40 V
QS
QR
RX = 75 k
2 DRN
Overvoltage
Shutdown
RS = 200
0.1
5 VCC
Charge
Pump
30 V
+VS
Current
Squaring
Circuit
ISQ
14 V
+
VTH
4.3 V
+
VTL
0.95 V
+R
1.0 V
Gate
4
SRC
1 1.0 k
Load
3 Gnd
8 VT
RT CT
2 MOTOROLA ANALOG IC DEVICE DATA


Part Number MC33091A
Description HIGH-SIDE TMOS DRIVER
Maker Motorola
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