LT1765 Datasheet PDF

●The LT1765EFE-3.3#PBF is an 1.25MHz monolithic buck Switching Regulator features a high efficiency 3A, 0.09R switch is included on the die together with all the control circuitry required to construct a high frequency, current mode switching regulator. Current mode control provides fast transient response and excellent loop stability. New design techniques achieve high efficiency at high switching frequencies over a wide operating voltage range. A low dropout internal regulator maintains consistent performance over a wide range of inputs from 24V systems to Li-Ion batteries. An operating supply current of 1mA improves efficiency, especially at lower output currents. Shutdown reduces quiescent current to 15µA. Maximum switch current remains constant at all duty cycles. Synchronization allows an external logic level signal to increase the internal oscillator into the range of 1.6 to 2MHz. Full cycle-by-cycle current control and thermal shutdown are provided.

● High efficiency 0.09R switch

● Uses low profile surface mount components

● Synchronizable to 2MHz

● Current mode loop control

● Constant maximum switch current rating at all duty cycles

● 1.2V Feedback reference voltage

● 15µA Low shutdown current