CA3282 Datasheet, PDF (1/10 Pages) Intersil Corporation – Octal Low Side Power Driver with Serial Bus Control

CA3282
June 1998
Octal Low Side Power Driver
with Serial Bus Control
Features
Description
• Output Current Drive Capability
- All Outputs ON, Equal . . . . . . . . . . . . . . 0.625A Each
- Per Output Individually . . . . . . . . . . . . . . . . . 1A Each
- Maximum Total of Outputs ON . . . . . . . . . . . . . . . .5A
• High Voltage Power BiMOS Outputs
- 8 Open Drain NDMOS Drivers
- Individual Output Latch
- Over-Current Limit Protection . . . . . . . . . . . . . 1.05A
- Over-Voltage Clamp Protection. . . . . . . . . . . . . . . 30V
• High Speed CMOS Logic Control
- Low Quiescent I_DD Current . . . . . . . . . . . . . . . . . 5mA
- SPI Bus Controlled Interface
- Individual Fault Unlatch and Feedback
- Common Reset Line
• Operating Temperature Range . . . . . . . -40^oC to 125^oC
Applications
• Automotive and Industrial Systems
• Solenoids, Relays and Lamp Drivers
• Logic and µP Controlled Drivers
• Robotic Controls
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.
Ordering Information
PART
NUMBER
TEMP.
RANGE(^oC)
PACKAGE AND
LEAD FORM
PKG
NO.
CA3282AS1
CA3282AS2
-40 to 125
-40 to 125
15 Ld Plastic SIP
Staggered Vertical
15 Ld Plastic SIP
Surface Mount
Z15.05A
Z15.05B
Pinout
NOTE:
HEAT SINK TAB
INTERNALLY
CONNECTED TO
GROUND (V_SS)
CA3282 (SIP)
TOP VIEW
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Block Diagram
OUTPUT #0
(1 OF 8)
OUTPUT 4
OUTPUT 5
OUTPUT 6
OUTPUT 7
RESET
V_DD
MISO
V_SS
MOSI
SCK
CE
OUTPUT 0
OUTPUT 1
OUTPUT 2
OUTPUT 3
MOSI
SCK
MISO
CE
RESET
SHIFT
REGISTER
OUTPUT
LATCH
CURRENT
LIMIT
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 © Intersil Corporation 1999
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File Number 2767.6