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LTC3855 step-down switching regulator controller

Linear Technology has introduced the LTC3855 dual PolyPhase® current mode synchronous step-down switching regulator controller that drives all N-channel power MOSFET stages. LTC3855 includes a high speed differential remote sense amplifier. LTC3855 support a wide input voltage range from 4.5V to 38V and can produce a maximum output voltage up to 12.5 V .

The LTC3855 supports Burst Mode® operation, continuous or pulse-skipping modes . The maximum current sense voltage is programmable for either 30mV, 50mV or 75mV, allowing the use of either the inductor DCR or a discrete sense resistor as the sensing element.

The LTC3855 can be configured for up to 12-phase operation, has DCR temperature compensation, two power good signals and two current limit set pins and many other features like :  High Efficiency: Up to 95% ,  RSENSE or DCR Current Sensing ,  Programmable DCR Temperature Compensation ,  ±0.75% 0.6V Output Voltage Accuracy , Phase-Lockable Fixed Frequency 250kHz to 770kHz , True Remote Sensing Differential Amplifier , Dual N-Channel MOSFET Synchronous Drive , Wide VIN Range: 4.5V to 38V ,  VOUT Range: 0.6V to 12.5V without Differential Amplifier ,  VOUT Range: 0.6V to 3.3V with Differential Amplifier , Clock Input and Output for Up to 12-Phase Operation ,  Adjustable Soft-Start or VOUT Tracking , Foldback Output Current Limiting ,  Output Overvoltage Protection .

With many features and easy design the LTC3855 can be ideal for many applications like : DC Power Distribution Systems  ,Computer Systems , Telecom Systems ,Industrial and Medical Instruments and many other.

LTC3855 step-down switching regulator controller

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