LT3757IMSE#PBF Datasheet PDF - Linear Technology

The LT3757IMSE#PBF is a current-mode DC/DC Controller which is capable of generating either positive or negative output voltages. It can be configured as either a boost, flyback, SEPIC or inverting converter. It drives a low side external N-channel power MOSFET from an internal regulated 7.2V supply. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages. The operating frequency of the controller can be set with an external resistor over a 100kHz to 1MHz range and can be synchronized to an external clock using the SYNC pin. A low minimum operating supply voltage of 2.9V and a low shutdown quiescent current of less than 1µA, makes the controller ideal. It features soft-start and frequency fold back functions to limit inductor current during start-up and output short-circuit.

● Positive or negative output voltage programming with a single feedback pin

● Current mode control provides excellent transient response

● Synchronizable to an external clock

● <1µA Low shutdown current

● Internal 7.2V Low dropout voltage regulator

● Programmable input undervoltage lockout with hysteresis

● Programmable soft-start