MC33981_10 Datasheet, PDF (1/40 Pages) Freescale Semiconductor, Inc – Single High Side Switch

Freescale Semiconductor
Technical Data
Single High Side Switch
(4.0 mOhm), PWM clock up to
60 kHz
Document Number: MC33981
Rev. 11.0, 7/2012
33981
The 33981 is a high frequency, self-protected 4.0 m 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 mm non-leaded power-enhanced
PQFN package with exposed tabs.
Features
• Single 4.0 m 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
HIGH SIDE SWITCH
Bottom View
FK (Pb-Free Suffix)
98ARL10521D
16-PIN PQFN (12 X 12)
ORDERING INFORMATION
Device
(Add R2 Suffix for
Tape and Reel)
Temperature
Range (T_A)
Package
MC33981BHFK
MC33981ABHFK
- 40 to 125 °C
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
INLS
EN
CBOOT
OUT
INHS
DLS
TEMP
CSNS
M
GLS
OCLS SR GND
Figure 1. 33981 Simplified Application Diagram
Freescale Semiconductor, Inc. reserves the right to change the detail specifications,
as may be required, to permit improvements in the design of its products.
© Freescale Semiconductor, Inc., 2007 - 2012. All rights reserved.