LTC3703EG#PBF

LTC3703 is a synchronous step-down switching regulator controller that can directly step down voltages from upto 100V, making it ideal for telecom and automotive applications. It drives external N-channel MOSFETs using a constant frequency (upto 600KHz), voltage mode architecture. A precise internal reference provides 1% DC accuracy. A high bandwidth error amplifier and patented line feedforward compensation provide very fast line and load transient response. Strong 1Ω gate drivers allow the device to drive multiple MOSFETs for higher current 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. It is used in application such as 48V telecom and base station power supplies, networking equipment, servers, automotive and industrial control etc.

• MOSFET gate drive voltage is 9.3V to 15V
• VIN pin voltage is 100V, supply current is 50µA typical at (RUN/SS = 0V)
• Undervoltage lockout is 8.7V (VCC rising)
• Undervoltage lockout is 6.2V (VCC falling)
• Large 1ohm typical gate drivers
• 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
• Selectable pulse-skip mode operation, programmable current limit
• Undervoltage lockout, programmable soft-start
• Operating temperature is -40°C to 85°C, package style is 28-lead plastic SSOP

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party