33982B_09 Datasheet, PDF (28/36 Pages) Freescale Semiconductor, Inc – Single Intelligent High-current Self-protected Silicon High Side Switch (2.0 mΩ)

TYPICAL APPLICATIONS
LOGIC COMMANDS AND REGISTERS
TYPICAL APPLICATIONS
V_PWR
V_DD
Voltage
Regulator
V_DD
V_DD NC V_PWR
V_DD
V_PWR
MCU
10 k 10 k
100nF
I/O
SCLK
CS
I/O
SI
SO
I/O
A/D
10k
10k
10k
10k
10k
1k
10 _VDD
10µF
NC
VPWR ¹⁴
2.5µF
10nF
2 _WAKE
4 _IN
8 _SCLK
7 _CS
33982
3 _RST
11 _SO
9 _SI
5 _FS
1 _CSNS
6 _FSI
RFS
12
NC
HS ¹⁵
HS ¹⁶
GND ¹³
LOAD
Figure 12. Typical Applications
The loads must be chosen in order to guarantee the device
normal operating condition for junction temperatures from -40
to 150°C. In case of permanent short-circuit conditions, the
duration and number of activation cycles must be limited with
a dedicated MCU fault management, using the fault reporting
through the SPI. When driving DC motor or Solenoid loads
demanding multiple switching, an external recirculation
device must be used to maintain the device in its Safe
Operating Area.
Two application notes are available:
• AN3274, which proposes safe configurations of the
eXtreme Switch devices in case of application faults, and
to protect all circuitry with minimum external components.
• AN2469, which provides guidelines for Printed Circuit
Board (PCB) design and assembly.
Development effort will be required by the end users to
optimize the board design and PCB layout, in order to reach
electromagnetic compatibility standards (emission and
immunity).
33982
28
Analog Integrated Circuit Device Data
Freescale Semiconductor