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Application Specific Discretes
A.S.D.™
FLC21-135A
®
July 2003 - Ed: 6D
LOW POWER
FIRE LIGHTER CIRCUIT
The FLC21-135A has been especially developed
for capacitance discharge operation. The main
applications are: fuel ignitors, fuel or gas heaters,
gas ranges, cooker tops, barbecues, water
heaters, HVACs, portable ignitors, insect killers.
Based on ST’s ASD™ technology, it provides a
fully integrated function, with high performance
and reliability levels, adapted to severe and hot
temperature environment.
The typical supply of the FLC21-135A fire lighter
circuit is a DC battery or the AC mains.
Th: Thyristor for the switching operation.
Z: Zener diode to set the igniting threshold voltage.
D: Diode for the reverse conduction.
R: 2kΩresistor.
DESCRIPTION
Z
R
D
Th
pin 3
pin 1
pin 2 not connected
FUNCTIONAL DIAGRAM
TO-92
(Plastic)
■
DEDICATED THYRISTOR STRUCTURE FOR
CAPACITIVE DISCHARGE IGNITION
OPERATION
■
HIGH PULSE CURRENT CAPABILITY
I
FRM
=90A @ tp=10µS
■
AC OR DC OPERATION CAPABILITY WITH
SUPPLY FROM THE AC MAINS OR A DC
BATTERY
■
FAST TURN-ON OPERATION
■
DESIGNED FOR HIGH AMBIENT
TEMPERATURE (up to 120°C)
FEATURES
1
2
3
■
SPACE SAVING THANKS TO MONOLITHIC
FUNCTION INTEGRATION
■ HIGH RELIABILITY WITH PLANAR
TECHNOLOGY
BENEFITS
DEVICE
TYPE
APPLICATION MODE
FLC21-135A BATTERY
OPERATION
Ignition
