CA3282
June 1998
Octal Low Side Power Driver
with Serial Bus Control
Description
The CA3282 is a logic controlled, eight channel octal power
driven. The serial peripheral interface (SPI) utilized by the
CA3282 is a serial synchronous bus compatible with Intersil
CDP68HC05, or equivalent, microcomputers. As shown in
the Block Diagram for the CA3282 each of the open drain
NDMOS output drivers has individual protection for over-volt-
age and over-current. Each output channel has separate
output latch control with fault unlatch and diagnostic feed-
back. Under normal ON conditions, each output driver is in a
low, saturation state. Comparators in the diagnostic circuitry
monitor the output drivers to determine if an out of saturation
condition exists. If a comparator senses a fault, the respec-
tive output driver is unlatched. In addition, over current pro-
tection is provided with current limiting in each output,
independent of the diagnostic feedback loop.
The CA3282 is fabricated in a Power BiMOS IC process, and is
intended for use in automotive and other applications having a
wide range of temperature and electrical stress conditions. It is
particularly suited for driving lamps, relays, and solenoids in
applications where low operating power, high breakdown volt-
age, and high output current at high temperatures is required.
The CA3282 is supplied in 15 lead plastic SIP package with
lead forms for either vertical or surface mount.
Features
鈥?Output Current Drive Capability
- All Outputs ON, Equal . . . . . . . . . . . . . . 0.625A Each
- Per Output Individually . . . . . . . . . . . . . . . . . 1A Each
- Maximum Total of Outputs ON . . . . . . . . . . . . . . . .5A
鈥?High Voltage Power BiMOS Outputs
- 8 Open Drain NDMOS Drivers
- Individual Output Latch
- Over-Current Limit Protection . . . . . . . . . . . . . 1.05A
- Over-Voltage Clamp Protection. . . . . . . . . . . . . . . 30V
鈥?High Speed CMOS Logic Control
- Low Quiescent I
DD
Current . . . . . . . . . . . . . . . . . 5mA
- SPI Bus Controlled Interface
- Individual Fault Unlatch and Feedback
- Common Reset Line
鈥?Operating Temperature Range . . . . . . . -40
o
C to 125
o
C
Applications
鈥?Automotive and Industrial Systems
鈥?Solenoids, Relays and Lamp Drivers
鈥?Logic and
碌P
Controlled Drivers
鈥?Robotic Controls
Ordering Information
PART
NUMBER
CA3282AS1
CA3282AS2
TEMP.
RANGE(
o
C)
-40 to 125
-40 to 125
PACKAGE AND
LEAD FORM
15 Ld Plastic SIP
Staggered Vertical
15 Ld Plastic SIP
Surface Mount
PKG
NO.
Z15.05A
Z15.05B
Pinout
CA3282 (SIP)
TOP VIEW
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
OUTPUT 4
OUTPUT 5
OUTPUT 6
OUTPUT 7
RESET
V
DD
MISO
V
SS
MOSI
SCK
CE
Block Diagram
OUTPUT #0
(1 OF 8)
NOTE:
HEAT SINK TAB
INTERNALLY
CONNECTED TO
GROUND (V
SS
)
MOSI
SCK
MISO
CE
RESET
SPI INTERFACE CIRCUIT
SHIFT
REGISTER
OUTPUT
LATCH
CURRENT
LIMIT
OUTPUT 0
OUTPUT 1
OUTPUT 2
OUTPUT 3
CONTROL
LOGIC
DIAGNOSTIC
CIRCUITRY
TO DRIVERS
1 THRU 7
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
|
Copyright
漏
Intersil Corporation 1999
File Number
2767.6
1
INTERSIL
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