LTC3896 Datasheet | Linear Technology

LTC3896 150V Low IQ, Synchronous Inverting DC/DC Controller Features Description nn Wide VIN + |VOUT- | Range: 4V to 140V (150V Abs Max) nn Wide Output Voltage Range: - 60V to - 0.8V nn Ground-Referenced Control / Interface Pins nn Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE) nn Integrated Bootstrap Diode nn Low Operating IQ: 40μA (Shutdown = 10μA) nn Selectable Gate Drive UVLO Thresholds nn Onboard LDO or External NMOS LDO for DRVCC nn EXTVCC LDO Powers Drivers from Output nn Phase-Lockable Frequency (75k Hz to 850k Hz) nn Programmable Fixed Frequency (50k Hz to 900k Hz) nn Selectable Continuous, Pulse-Skipping or Low Ripple Burst Mode® Operation at Light Loads nn Adjustable Burst Clamp and Current Limit nn Power Good Output Voltage Monitor nn Programmable Input Overvoltage Lockout nn 38-Lead TSSOP High Voltage Package Applications nn Automotive and Industrial Power Systems nn Telemunications Power Supplies nn Distributed Power Systems The LTC®3896 is a high performance inverting DC/DC switching regulator controller that drives an all N-channel synchronous power MOSFET stage. It converts a wideranging positive input voltage source to a regulated negative output that can be as much as 60V below ground. The input can operate from a voltage as low as 4V and as high as 140V - |VOUT- |. The LTC3896 contains true ground-referenced RUN, PLLIN and PGOOD pins, eliminating the need for external discrete level-shifting ponents to interface with the LTC3896. A constant frequency current mode architecture allows a phase-lockable frequency of up to 850k Hz. The low 40μA no-load quiescent current extends operating run time in battery-powered systems. OPTI-LOOP® pensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3896 Features a precision 0.8V reference and power good output indicator. The soft-start (SS) pin ramps the output voltage during start-up. L, LT, LTC, LTM, Linear Technology, the Linear logo,...