LTC1148CS-3.3 PBFLF

The LTC1148CS-3.3 is a kind of synchronous stepdown switching regulator controller featuring automatic Burst ModeTM operation to maintain high efficiencies at low output currents. It drives external complementary power MOSFETs at switching frequencies up to 250kHz using a constant off-time current-mode architecture providing constant ripple current in the inductor.
 
Features of the LTC1148CS-3.3 are:(1) ultrahigh efficiency is over 95% possible;(2) current-mode operation for excellent line and load transient response;(3) high efficiency maintained over three decades of output current;(4) wide VIN range is 3.5V to 20V;(5) short-circuit protection;(6) very low dropout operation is 100% duty cycle;(7) synchronous FET switching for high efficiency;(8) adaptive nonoverlap gate drives;(9) output can be externally held high in shutdown.

The absolute maximum ratings of the LTC1148CS-3.3 can be summarized as:(1): input supply voltage(Pin 3) is 16V to -0.3V;(2): continuous output current (Pins 1, 14) is 50mA;(3): operating ambient temperature range is 0°C to 70°C;(4): junction temperature is 125°C; (5): storage temperature Range is 65°C to 150°C;(6): lead temperature (Soldering, 10 sec) is 300°C.