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