Freescale Semiconductor, Inc.
Document order number: MC33987
Rev 2.0, 02/2005
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Preliminary Information
33987
Quad Intelligent High-Side Switch
(Quad 70 mΩ)
The 33987 is one in a family of devices designed for low-voltage automotive
and industrial lighting and motor control applications. Its four low RDS(ON)
MOSFETs (four 70 mΩ) can control the high sides of four separate resistive or
inductive loads.
QUAD INTELLIGENT
HIGH-SIDE SWITCH
Programming, control, and diagnostics are accomplished using a 16-bit SPI
interface. Additionally, each output has its own parallel input for PWM control
if desired. The 33987 allows the user to program via the SPI the fault current
trip levels and duration of acceptable lamp inrush or motor stall intervals. Such
programmability allows tight control of fault currents and can protect wiring
harnesses and circuit boards as well as loads.
The 33987 is packaged in a power-enhanced 10x10 nonleaded Power
QFN package with exposed tabs.
Bottom View
Features
• Quad 70 mΩ High-Side Switches
PNC SUFFIX
98ARL10591D
24-TERMINAL PQFN
• Operating Voltage Range of 6.0 V to 27 V with Standby Current < 5.0 µA
• SPI Control of Overcurrent Limit, Overcurrent Fault Blanking Time, Output-
OFF Open Load Detection, Output ON/OFF Control, Watchdog Timeout,
Slew Rates, and Fault Status Reporting
• SPI Status Reporting of Overcurrent, Open and Shorted Loads,
Overtemperature, Undervoltage and Overvoltage Shutdown, Fail-Safe
Terminal Status, and Program Status
ORDERING INFORMATION
Temperature
Device
Package
Range (T )
A
• Analog Current Feedback with Selectable Ratio
PC33987PNC/R2
-40°C to 125°C
24 PQFN
• Enhanced 16 V Reverse Polarity VPWR Protection
33987 Simplified Application Diagram
VPWR
VDD
VDD
VDD
VPWR
33987
VDD
VPWR
HS0
WAKE
FS
I/O
SI
LOAD 0
LOAD 1
SO
SO
SI
HS1
HS2
HS3
SCLK
CS
SCLK
CS
MCU
I/O
RST
IN0
I/O
LOAD 2
LOAD 3
I/O
IN1
I/O
IN2
I/O
IN3
A/D
CSNS
FSI
GND
GND
This document contains information on a product under development.
Motorola reserves the right to change or discontinue this product without notice.
For More Information On This Product,
Go to: www.freescale.com
© Motorola, Inc. 2005