
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
Motorola, Inc. 2004
Document order number: MC33984
Rev 4.0, 09/2004
33984
Advance Information
33984 Simplified Application Diagram
33984
V
DD
V
DD
MCU
V
DD
V
PWR
I/O
I/O
SO
FS
WAKE
SI
SCLK
CS
SCLK
CS
SI
I/O
I/O
I/O
A/D
IN0
IN1
CSNS
FSI
HS0
GND
GND
GND
V
DD
V
PWR
PWR GND
SO
RST
LOAD
HS1
LOAD
Dual Intelligent High-Current
Self-Protected Silicon High-Side
Switch (4.0 m
)
The 33984 is a dual self-protected 4.0 m
silicon switch used to replace
electromechanical relays, fuses, and discrete devices in power management
applications. The 33984 is designed for harsh environments, and it includes
self-recovery features. The device is suitable for loads with high inrush current,
as well as motors and all types of resistive and inductive loads.
Programming, control, and diagnostics are implemented via the Serial
Peripheral Interface (SPI). A dedicated parallel input is available for alternate
and pulse-width modulation (PWM) control of each output. SPI-programmable
fault trip thresholds allow the device to be adjusted for optimal performance in
the application.
The 33984 is packaged in a power-enhanced 12 x 12 nonleaded PQFN
package with exposed tabs.
Features
Dual 4.0 m
Max High-Side Switch with Parallel Input or SPI Control
6.0 V to 27 V Operating Voltage with Standby Currents < 5.0
μ
A
Output Current Monitoring with Two SPI-Selectable Current Ratios
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
Pin Status, and Program Status
Enhanced -16 V Reverse Polarity V
PWR
Protection
DUAL HIGH-SIDE SWITCH
4.0 m
ORDERING INFORMATION
Device
Temperature
Range (T
A
)
Package
MC33984PNA/R2
-40
°
C to 125
°
C
16 PQFN
SCALE 1:1
16-TERMINAL PQFN (12 x 12)
Bottom View
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.