| Description & Applications | 100kHz 1.25A Switching Regulators •1.25A, 65V internal switch rating • 3V to 40V input voltage range • Current-mode operation • Internal cycle-by-cycle current limit • Thermal shutdown • Low external parts count • Operates in most switching topologies • 7mA quiescent current (operating) • <1µA quiescent current, shutdown mode • TTL shutdown compatibility • Fits most LT1172 sockets Applications • Laptop/palmtop computers • Toys • Hand-held instruments • Off-line converter up to 50W (requires external power switch) • Predriver for higher power capability • Master/slave configurations |