The LTC3611EWP#PBF is a high-efficiency monolithic synchronous step-down DC-to-DC Converter can deliver up to 10A output current from a 4.5 to 32V (36V maximum) input supply. It uses a constant on-time valley current-mode control architecture to deliver very low duty cycle operation at high frequency with excellent transient response. The operating frequency is selected by an external resistor and is compensated for variations in VIN and VOUT. The LTC3611 can be configured for discontinuous or forced continuous operation at light load. Forced continuous operation reduces noise and RF interference while discontinuous mode provides high efficiency by reducing switching losses at light loads. Fault protection is provided by internal foldback current limiting, an output overvoltage comparator and an optional short-circuit shutdown timer. Soft-start capability for supply sequencing is accomplished using an external timing capacitor. The regulator current limit is user programmable.
● Internal N-channel MOSFETs
● True current-mode control
● Optimized for high step-down ratios
● Extremely fast transient response
● Stable with ceramic capacitors
● Power good output voltage monitor
● Adjustable current limit
● Programmable soft-start
● Output overvoltage protection
● 15µA Low shutdown IQ
