LTC3717EUH-1#PBF

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Analog Devices Inc./Maxim Integrated

WIDE OPERATING RANGE, NO RSENSE™STEP-DOWN CONTROLLER FOR DDR/QDR MEMORY TERMINATION

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LTC3717EUH-1#PBF

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Analog Devices Inc./Maxim Integrated

WIDE OPERATING RANGE, NO RSENSE™STEP-DOWN CONTROLLER FOR DDR/QDR MEMORY TERMINATION

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC3717 Series

The LTC3717-1 is a synchronous step-down switching regulator controller for double data rate (DDR) and Quad Data Rate™(QDR™) memory termination. The controller uses a valley current control architecture to deliver very low duty cycles with or without a sense resistor. Operating frequency is selected by an external resistor and is compensated for variations in VINand VOUT.Forced continuous operation reduces noise and RF interference. Output voltage is internally set to half of VREF, which is user programmable.Fault protection is provided by an output overvoltage comparator and optional short-circuit shutdown timer. Soft-start capability for supply sequencing is accomplished using an external timing capacitor. The regulator current limit level is symmetrical and user programmable. Wide supply range allows operation from 4V to 36V at the VCCinput.Von PinPackageLTC3717NoSSOP-16LTC3717-1YesQFN-32ApplicationsBus Termination: DDR and QDR Memory, SSTL, HSTL, ...Notebook Computers, Desktop ServersTracking/Margining Power Supply

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3717EUH-1#PBF

Applications	DDR, QDR, Controller
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Package / Case	32-WFQFN Exposed Pad
Package Length	5 mm
Package Name	32-QFN
Package Width	5 mm
Voltage - Input (Maximum)	36 V
Voltage - Input (Minimum)	4 V
Voltage - Output (Max)	18 V
Voltage - Output (Min)	2 V

LTC3717 Series

Part	Operating Temperature (Min)	Operating Temperature (Max)	Package Name	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Mounting Type	Voltage - Output (Min)	Voltage - Output (Max)	Applications	Number of Outputs	Package Width	Package Length	Package / Case
Analog Devices Inc./Maxim Integrated LTC3717EGN#PBF	-40 °C	85 °C	16-SSOP	4 V	36 V	Surface Mount	2 V	18 V	Controller DDR QDR	1	3.9 mm	0.154 in
Analog Devices Inc./Maxim Integrated LTC3717EUH-1#PBF	-40 °C	85 °C	32-QFN	4 V	36 V	Surface Mount	2 V	18 V	Controller DDR QDR	1	5 mm	5 mm	32-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC3717EGN#TRPBF	-40 °C	85 °C	16-SSOP	4 V	36 V	Surface Mount	2 V	18 V	Controller DDR QDR	1	3.9 mm	0.154 in
Analog Devices Inc./Maxim Integrated LTC3717EGN#PBF	-40 °C	85 °C	16-SSOP	4 V	36 V	Surface Mount	2 V	18 V	Controller DDR QDR	1	3.9 mm	0.154 in

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC3717EUH-1#PBF | Datasheet

R384 Reliability Data