LTC3703-5 Datasheet | Linear Technology

60V Synchronous Switching Regulator Controller Features - High Voltage Operation: Up to 60V - Large 1Ω Gate Drivers (with 5V Supply) - No Current Sense Resistor Required - Step-Up or Step-Down DC/DC Converter - Dual N-Channel MOSFET Synchronous Drive - Excellent Line and Load Transient Response - Programmable Constant Frequency: 100k Hz to 600k Hz - ±1% Reference Accuracy - Synchronizable up to 600k Hz - Selectable Pulse Skip Mode Operation - Low Shutdown Current: 25µA Typ - Programmable Current Limit - Undervoltage Lockout - Programmable Soft-Start - 16-Pin Narrow SSOP and 28-Pin SSOP Packages U APPLICATIO S - 48V Tele and Base Station Power Supplies - Networking Equipment, Servers - Automotive and Industrial Control , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. - U.S. Patent Numbers: 5408150, 5055767, 6677210, 5847554, 5481178, 6304066, 6580258; Others Pending. DESCRIPTIO The LTC®3703-5 is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 60V input, making it ideal for tele and automotive applications. The LTC3703-5 drives external logic level N-channel MOSFETs using a constant frequency (up to 600k Hz), voltage mode architecture. A precise internal reference provides 1% DC accuracy. A high bandwidth error amplifier and patented- line feed forward pensation provide very fast line and load transient response. Strong 1Ω gate drivers allow the LTC3703-5 to drive multiple MOSFETs for higher current applications. The operating frequency is user programmable from 100k Hz to 600k Hz and can also be synchronized to an external clock for noise-sensitive applications. Current limit is programmable with an external resistor and utilizes the voltage drop across the synchronous MOSFET to eliminate the need for a current sense resistor. For applications requiring up to 100V operation, refer to the LTC3703 data...