MC33981 Datasheet, PDF (1/37 Pages) Motorola, Inc – High-Frequency, High-Current, Self-Protected High-Side Switch (4.0 mΩ up to 60 kHz)

Freescale Semiconductor
Advance Information
Document Number: MC33981
Rev. 7.0, 10/2008
Single High Side Switch (4.0 mΩ),
PWM clock up to 60 kHz
33981
The 33981 is a high frequency, self-protected 4.0 mΩ R_DS(ON) high
side switch used to replace electromechanical relays, fuses, and
discrete devices in power management applications.
The 33981 can be controlled by Pulse-width Modulation (PWM) with
a frequency up to 60 kHz. It is designed for harsh environments, and it
includes self-recovery features. The 33981 is suitable for loads with high
inrush current, as well as motors and all types of resistive and inductive
loads.
The 33981 is packaged in a 12 x 12 non-leaded power-enhanced
Power QFN package with exposed tabs.
Features
• Single 4.0 mΩ R_DS(ON) maximum high side switch
• PWm capability up to 60 kHz with duty cycle from 5% to 100%
• Very low standby current
• Slew rate control with external capacitor
• Over-current and over-temperature protection, under-voltage
shutdown and fault reporting
• Reverse battery protection
• Gate drive signal for external low side N-channel MOSFET with
protection features
• Output current monitoring
• Temperature feedback
• Pb-free packaging designated by suffix code PNA
HIGH SIDE SWITCH
Bottom View
PNA (Pb-Free Suffix)
98ARL10521D
16-PIN PQFN (12 X 12)
ORDERING INFORMATION
Device
Temperature
Range (T_A)
MC33981BPNA/R2 -40°C to 125°C
Package
16 PQFN
V_DD
V_DD
V_PWR
33981
I/O
I/O
MCU ^I/O
I/O
A/D
A/D
CONF VPWR
FS
CBOOT
INLS
EN
OUT
INHS
DLS
TEMP
CSNS
M
GLS
OCLS SR GND
Figure 1. 33981 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
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