LT3509EDE#PBF Datasheet PDF - Linear Technology

●The LT3509EDE#PBF is a dual current mode step-down Switching Regulator with internal power switches each capable of providing 700mA output current. This regulator provides a compact and robust solution for multi-rail systems in harsh environments. It incorporates several protection features including overvoltage lockout and cycle-by-cycle current limit. Thermal shutdown provides additional protection. The loop compensation components and the boost diodes are integrated on-chip. Switching frequency is set by a single external resistor. External synchronization is also possible. The high maximum switching frequency allows the use of small inductors and ceramic capacitors for low ripple. Constant frequency operation above the AM band avoids interference with radio reception, making the LT3509 well suited for automotive applications. Each regulator has an independent shutdown and soft-start control pin.

● Overvoltage lockout protects circuit through 60V supply transients

● Short-circuit robust

● 95% Maximum duty cycle low dropout voltage

● Uses small inductors and ceramic capacitors

● Integrated boost diodes

● Internal compensation