Product Summary

The LTC3831EGN#TR is a high power, high efficiency switching regulator controller designed for DDR memory termination. The LTC3831EGN#TR generates an output voltage equal to 1/2 of an external supply or reference voltage. The LTC3831 uses a synchronous switching architecture with N-channel MOSFETs. Additionally, the chip senses output current through the drain-source resistance of the upper N-channel FET, providing an adjustable current limit without a current sense resistor. The applications of theLTC3831EGN#TR are (1)DDR SDRAM Termination; (2)SSTL_2 Interface; (3)SSTL_3 Interface.

Parametrics

LTC3831EGN#TR absolute maximum ratings: (1)Supply Voltage VCC: 9V, PVCC1,2 : 14V; (2)Input Voltage IFB, IMAX: –0.3V to 14V; (3)R+, R–, FB, SHDN, FREQSET: –0.3V to VCC + 0.3V; (4)Junction Temperature: 125°C; (5)Operating Temperature Range: –40°C to 85°C; (6)Storage Temperature Range: –65°C to 150°C; (7)Lead Temperature (Soldering, 10 sec): 300°C.

Features

LTC3831EGN#TR features: (1)High Power Switching Regulator Controller for DDR Memory Termination; (2)VOUT Tracks 1/2 of VIN or External VREF; (3)No Current Sense Resistor Required; (4)Low Input Supply Voltage Range: 3V to 8V; (5)Maximum Duty Cycle >91% Over Temperature; (6)Drives All N-Channel External MOSFETs; (7)High Efficiency: Over 95% Possible; (8)Programmable Fixed Frequency Operation: 100kHz to 500kHz; (9)External Clock SynchronizatioOperation; (10)Programmable Soft-Start; (11)Low ShutdowCurrent: <10mA; (12)Overtemperature Protection; (13)Available i16-PiNarrow SSOP Package.

Diagrams

LTC3831EGN#TR pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LTC3831EGN#TR
LTC3831EGN#TR


IC SW REG CONTROLLR SYNC 16-SSOP

Data Sheet

0-2500: $1.88
LTC3831EGN#TRPBF
LTC3831EGN#TRPBF


IC SW REG CONTROLLR SYNC 16-SSOP

Data Sheet

0-2500: $1.81