FEATURES
s VOUT as Low as 0.4V s High Power Switching Regulator Controller for DDR Memory Termination s VOUT Tracks 1/2 of VIN or External VREF s No Current Sense Resistor Required s Low VCC Supply: 3V to 8V s Maximum Duty Cycle > 91% Over Temperature s Drives All N-Channel External MOSFETs s High Efficiency: Up to 95% s Programmable Fixed Frequency Operation: 100kHz to 500kHz s External Clock Synchronization Operation s Programmable Soft-Start s Low Shutdown Current: <10µA s Overtemperature Protection s Available in 16-PUin Narrow SSOP Package APPLICATIO S s DDR SDRAM Termination s SSTL_2, SSTL_3 Interface s HSTL Interface LTC3831-1 High Power Synchronous Switching Regulator Controller for DDR Memory Termination DESCRIPTIO The LTC®3831-1 is a high power, high efficiency switching regulator controller designed for DDR memory termination. The LTC3831-1 generates an output voltage equal to 1/2 of an external supply or reference voltage. The LTC3831-1 uses a synchronous switching architecture with N-channel MOSFETs.
Linear Technology
