LT®3957 / LT®3958 Converters

Analog Devices' LT3957 and LT3958 DC/DC converters can generate a positive or negative regulated output voltage with two internal voltage feedback error amplifiers and reference voltages. One set is for positive output voltages, and the other is for negative output voltages, both off a single feedback pin. With a programmable fixed or synchronizable operating frequency from 100 kHz to 1 MHz, designers can choose a wide range of inductors and capacitors to optimize size, performance, and cost.

Its current-mode control results in stable operation over a wide range of supply and output voltages. The device supports designs using only ceramic capacitors, enabling a smaller solution size. Additional features include programmable soft start, adjustable input undervoltage lockout as well as output overvoltage and overcurrent protection.