UC1842/3/4/5
UC2842/3/4/5
UC3842/3/4/5
UNDER-VOLTAGE LOCKOUT
During under-voltage lock-out, the output driver is biased to
sink minor amounts of current. Pin 6 should be shunted to
ground with a bleeder resistor to prevent activating the power
switch with extraneous leakage currents.
CURRENT SENSE CIRCUIT
Peak Current (I
S
) is Determined By The Formula
1.0V
I
SMAX
≈
R
S
A small RC filter may be required to suppress switch transients
.
OSCILLATOR SECTION
5