Freescale Semiconductor
Advance Information
Document Number: MC33981
Rev. 8.0, 6/2009
Single High Side Switch (4.0 mΩ),
PWM clock up to 60 kHz
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
33981
HIGH SIDE SWITCH
Bottom View
PNA (Pb-Free Suffix)
98ARL10521D
16-PIN PQFN (12 X 12)
ORDERING INFORMATION
Device
MC33981BPNA/R2
Temperature
Range (T
A
)
- 40°C to 125°C
Package
16 PQFN
V
DD
V
DD
V
PWR
33981
CONF
I/O
I/O
VPWR
CBOOT
OUT
DLS
FS
INLS
EN
INHS
TEMP
CSNS
MCU
I/O
I/O
A/D
A/D
GLS
OCLS SR GND
M
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.
© Freescale Semiconductor, Inc., 2007 - 2008. All rights reserved.
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