LTC3867 Datasheet | Linear Technology

Features n VIN Range: 4V to 38V n VOUT Range: 0.6V to 14V n Nonlinear Control Architecture Minimizes Output Transient Excursions (Optional) n Programmable DCR Temperature pensation n ±0.75% 0.6V Voltage Reference n Fixed Frequency Range of 200k Hz to 1.2MHz n PLL Frequency Synchronization n RSENSE or DCR Current Sensing n Differential Remote Output Voltage Sense n Supports Smooth Start-Up into Pre-Biased Outputs n Programmable Soft-Start or VOUT Tracking n Hiccup Mode/Soft Recovery from Output Overcurrent n 24-Lead (4mm × 4mm) QFN Package APPLICATIONS n Automotive Systems n Tele Systems n Industrial Equipment n Distributed DC Power Systems L, LT, LTC, LTM, Burst Mode, OPTI-LOOP, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6177787, 6580258, 6498466, 6611131. LTC3867 Synchronous Step-Down DC/DC Controller with Differential Remote Sense and Nonlinear Control DESCRIPTION The LTC®3867 is a current mode synchronous step-down switching regulator controller that drives all N-channel power MOSFET stages. Output voltage transient excursions are minimized by use of a nonlinear control architecture to eliminate clock latency issues. The maximum current sense voltage is programmable from 30m V to 75m V, allowing the use of either a discrete sense resistor or the inductor DCR as the sensing element. Programmable DCR temperature pensation allows constant current limit regardless of inductor temperature. Programmable inductor temperature-based thermal shutdown protects the power ponents from thermal stress. Soft recovery from output shorts or overcurrent minimizes output overshoot. The LTC3867 Features a precision 0.6V reference and can regulate output voltages up to 14V from a wide 4V to 38V input supply range. The LTC3867 includes a high speed differential remote sense...