DESCRIPTION
The LT®3509 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.

FEATURES
Two 700mA Switching Regulators with Internal Power Switches
Wide 3.6V to 36V Operating Range
Overvoltage Lockout Protects Circuit Through 60V Supply Transients
Short-Circuit Robust
Low Dropout Voltage: 95% Maximum Duty Cycle
Adjustable 300kHz to 2.2MHz Switching Frequency Synchronizable Over the Full Range
Uses Small Inductors and Ceramic Capacitors
ntegrated Boost Diodes
nternal Compensation
Thermally Enhanced 14-Lead (4mm × 3mm) DFN and 16 Lead MSOP Packages

APPLICATIONS
Automotive Electronics
Industrial Controls
Wall Transformer Regulation
Networking Devices
CPU, DSP, or FPGA Power