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Description
The STCC08 is an AC switch failure mode
detector and an AC power switch driver. It drives
the AC switch and informs the MCU of switch
failure. The MCU takes the appropriate actions to
put the system in a secure state.
Diode-mode, short circuit detection and open
switch in both AC line polarities are detected.
The STCC08 helps home appliances to meet the
IEC 60335-1 safety standard.
The STCC08 can be easily interfaced to an MCU
with its CMOS input AC switch driver and CMOS
compatible output for the failure mode detector.
Enable appliances to meet IEC 60335-1 and
IEC 60730-1 standards
Enable appliances to meet IEC 61000-4-4
standard
Eliminates high DC current in inductive load, by
detecting the diode mode failure
Improve system safety monitoring open switch
failure with critical loads such as door locks
Enable MCU to sense all AC switch failure
modes and protect the appliance
Less MCU pin allocated to AC failure detection
multiple STCC08 designed with resistor
dividers uses one I/O
Easy to drive with MCU directly connected or
through an opto coupler
Highly compact with integrated solution in SMD
version
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March 2008
Rev 1
1/13
www.st.com
13
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