LTC3831IGN#PBF

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Analog Devices

HIGH POWER SYNCHRONOUS SWITCHING REGULATOR CONTROLLER FOR DDR MEMORY TERMINATION

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LTC3831IGN#PBF

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Analog Devices

HIGH POWER SYNCHRONOUS SWITCHING REGULATOR CONTROLLER FOR DDR MEMORY TERMINATION

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DocumentsDatasheet R320 Reliability Data

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Technical Specifications

Parameters and characteristics for this part

Specification	LTC3831IGN#PBF

Applications	DDR, Controller
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	0.154 in
Package / Case	16-SSOP
Package / Case	3.9 mm
Supplier Device Package	16-SSOP
Voltage - Input [Max]	8 VDC
Voltage - Input [Min]	3 V
Voltage - Output [Max]	4 V
Voltage - Output [Min]	1.27 V

LTC3831 Series

High Power Synchronous Switching Regulator Controller for DDR Memory Termination

Part	Number of Outputs	Mounting Type	Package / Case	Package / Case	Package / Case	Applications	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Voltage - Input [Max]	Voltage - Input [Min]	Voltage - Output [Min]	Voltage - Output [Max]
Analog Devices LTC3831IGN#PBF	1	Surface Mount	0.154 in	16-SSOP	3.9 mm	Controller DDR	85 °C	-40 °C	16-SSOP	8 VDC	3 V	1.27 V	4 V
Analog Devices LTC3831IGN#TRPBF	1	Surface Mount	0.154 in	16-SSOP	3.9 mm	Controller DDR	85 °C	-40 °C	16-SSOP	8 VDC	3 V	1.27 V	4 V
Analog Devices LTC3831EGN#TRPBF	1	Surface Mount	0.154 in	16-SSOP	3.9 mm	Controller DDR	85 °C	-40 °C	16-SSOP	8 VDC	3 V	1.27 V	4 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	100	$ 6.59

Description

General part information

LTC3831 Series

The LTC3831 is a high power, high efficiency switching regulator controller designed for DDR memory termination. The LTC3831 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 LTC3831 operates with input supply voltage as low as 3V and with a maximum duty cycle of >91%. It includes a fixed frequency PWM oscillator for low output ripple operation. The 200kHz free-running clock frequency can be externally adjusted or synchronized with an external signal from 100kHz to above 500kHz. In shutdown mode, the LTC3831 supply current drops to <10µA.Feedback VoltageAccuracy Over TempLTC38311.25V1.5%LTC3831-10.75V1.6%ApplicationsDDR SDRAM TerminationSSTL_2 InterfaceSSTL_3 Interface