LTC3409A Datasheet (Linear Technology Corporation)

LTC3409A, 600mA Low VIN Buck Regulator

The LTC®3409A is a high efﬁciency, monolithic synchronous buck regulator using a constant frequency, current mode architecture.

The LTC3409A improves upon the LTC3409’s light load regulation in Burst Mode operation.

The output voltage is adjusted via an external resistor divider.

Fixed switching fre

LTC3409A Features

* n 1.6V to 5.5V Input Voltage Range n 0.62V to 5.5V Output Voltage Range n Internal Soft-Start n Selectable 1.7MHz or 2.6MHz Constant Frequency Operation n Internal Oscillator Can Be Synchronized to an External Clock, 1MHz to 3MHz Range n High Efﬁciency: Up to 95% n 65μA Quiescent Current, Burst Mode