Order this document by MC33298/D
OCTAL SERIAL SWITCH
(SPI Input/Output)
The MC33298 is an eight output low side power switch with 8 bit serial input
control. The MC33298 is a versatile circuit designed for automotive
applications, but is well suited for other environments. The MC33298
incorporates SMARTMOS technology, with CMOS logic, bipolar/MOS
analog circuitry, and DMOS power MOSFETs. The MC33298 interfaces
directly with a microcontroller to control various inductive or incandescent
loads. The circuit’s innovative monitoring and protection features are: very low
standby current, cascadable fault reporting, internal 65 V clamp on each
output, output specific diagnostics, and independent shutdown of outputs. The
SEMICONDUCTOR
TECHNICAL DATA
MC33298 is parametrically specified over a temperature range of – 40°C ≤ T
A
≤ +125°C ambient temperature and 9.0 V ≤ V
≤ 16 V supply. The
PWR
economical 20 pin DIP and SO–24 wide body surface mount plastic packages
make the MC33298 very cost effective.
20
• Designed to Operate Over Wide Supply Voltages of 5.5 V to 26.5 V
• Interfaces Directly to Microprocessor Using SPI Protocol
• SPI Communication for Control and Fault Reporting
• 8–Bit Serial I/O is CMOS Compatible
1
24
P SUFFIX
PLASTIC PACKAGE
1
CASE 738
DIP (16+2+2)
• 3.0 A Peak Current Outputs with Maximum R
of 0.45 Ω at 25°C
DS(on)
DW SUFFIX
PLASTIC PACKAGE
CASE 751E
• Outputs are Current Limited to 3.0 A to 6.0 A for Driving Incandescent
Lamp Loads
SOP (16+4+4)L
• Output Voltages Clamped to 65 V During Inductive Switching
• Maximum Sleep Current (I
) of 50 µA with V
≤ 2.0 V
PWR
During Operation
DD
PIN CONNECTIONS
• Maximum of 4.0 mA I
• Maximum of 2.0 mA I
DD
During Operation with All Outputs “On”
PWR
DIP
Function
SOP–24L
• Open Load Detection (Outputs “Off”)
• Overvoltage Detection and Shutdown
• Each Output has Independent Over Temperature Detection and Shutdown
• Output Mode Programmable for Sustained Current Limit or Shutdown
1
2
3
4
5
6
–
–
7
Output 7
Output 6
SCLK
1
2
3
4
5
6
7
8
9
SI
Ground
Ground
Ground
Ground
SO
• Short Circuit Detect and Shutdown with Automatic Retry for Every
Write Cycle
• Serial Operation Guaranteed to 2.0 MHz
8
CSB
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
9
Output 5
Output 4
Output 3
Output 2
SFPD
10
11
12
13
14
15
16
–
Simplified Application
SFPD
V
V
+V
bat
DD
PWR
V
DD
Ground
Ground
Ground
Ground
Y
Y
0
1
SFPD
–
Updrain
DMOS
Output
Switches
and
Sense
Circuits
Y
Y
2
3
17
18
19
20
V
Reset
CMOS
Serial Shift
Registers
and
PWR
CSB
SCLK
SI
CMOS
Input
Logic
Output 1
Output 0
Micro–
controller
with Bus
Y
4
Latches
Y
5
Reset
SO
ORDERING INFORMATION
Tested Operating
Y
6
7
Y
Temperature Range
Device
Package
MC33298P
DIP
T
C
= – 40° to +125°C
Gnd
This device contains 1,200 active transistors.
SOP–24L
MC33298DW
Motorola, Inc. 1996
Rev 2
1
MOTOROLA ANALOG IC DEVICE DATA