Details, datasheet, quote on part number: FAN1654MX
PartFAN1654MX
Category
Description1A LDO, DDR Bus Termination Regulator
CompanyFairchild Semiconductor
DatasheetDownload FAN1654MX datasheet
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Features, Applications

Features

Sinks and sources 1A continuous, 1.5A peak to +125C Operating Range Load regulation: 40mV 5mA VREF buffer tracks VTT On-chip thermal limiting Power-enhanced eTSSOPTM-16 package Low Current Shutdown Mode Output Short Circuit Protection

Description

The is a low-cost bi-directional LDO specifically designed for terminating DDR memory bus. It can both sink and source to 1A continuous, 1.5A peak, providing enough current for most DDR applications. Load regulation meets the JEDEC spec, VTT 40mV. The FAN1654 includes a buffered reference voltage capable of supplying to 5mA current. On-chip thermal limiting provides protection against a combination of power overload and ambient temperature that would create an excessive junction temperature. A shutdown input puts the FAN1654 into a low power mode for laptop computer applications. The FAN1654 regulator is available in a power-enhanced eTSSOPTM-16 package, and the standard SOIC-14

Applications
VDDQ 200k VREFOUT VREFIN + VTTFORCE + VTTFORCE 200k VTTSENSE FAN1655 VSSQ VSS VDD SHDN

VDD VTTFORCE VSS VTTFORCE VDD VSS FAN1654 NC VDDQ VREFOUT VSSQ SHDN VREFIN VTTSENSE NC VSSQ VREFOUT VDDQ VDD VTTFORCE VSS FAN1654 SHDN VREFIN VTTSENSE VSS VDD VTTFORCE VSS

*With package power slug soldered to 0.5 square inch copper area over backside ground plane of internal power plane

Pin Number* Pin Name VDD VTTFORCE VSS VTTSENSE VREFIN SHDN VTT Force Output. Power Ground. VTT Sense. Feedback for remote sense of the VTT voltage. VREFIN. Alternative input for direct control of VTTOUT and VREFOUT. Shutdown. This active low shutdown turns off both VTT and VREFOUT. This pin has an internal pull-down, and must be externally driven high for the to be on. Signal Ground. Buffered Voltage Reference Output. VDDQ Input. Attach this pin to the VDDQ supply to generate VTT and VREFOUT. No Internal Connection Pin Function Description VDD. Input power for the LDO.



 

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FAN1654M
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