MIC5162 Dual Regulator Controller for DDR2/3 Memory Termination and High-Speed Bus Termination0 pages

MIC5162
Dual Regulator Controller for DDR3
GDDR3/4/5 Memory and High-Speed
Bus Termination
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
General Description
The MIC5162 is a dual regulator controller designed for highspeed bus termination. It offers a simple, low-cost JEDEC compliant solution for terminating high-speed, low-voltage digital buses (i.e. DDR, DD2, DDR3, SCSI, GTL, SSTL, HSTL, LV-TTL, Rambus, LV-PECL, LV-ECL, etc).
The MIC5162 controls two external N-Channel MOSFETs to form two separate regulators. It operates by switching between either the high-side MOSFET or the low-side MOSFET depending on whether the current is being sourced to the load or sinked by the regulator.
Designed to provide a universal solution for bus termination regardless of input voltage, output voltage, or load current, the desired MIC5162 output voltage can be programmed by externally forcing the reference voltage.
The MIC5162 operates from an input of 1.35V to 6V, with a second bias supply input required for operation. It is available in the tiny MSOP-10 package with operating junction temperature range of -40°C to +125°C.
Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com.
Features
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JEDEC Compliant Bus Termination for SCSI, GTL,
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SSTL, HSTL, LV-TTL, Rambus, LV-PECL, LV-ECL, etc.
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DDR, DDR2, DDR3, memory termination
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Tracking programmable output
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Requires minimal external components
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Wide bandwidth
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Input voltage range: 1.35V to 6V
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Logic controlled enable input
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Tiny MSOP-10 package
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-40°C < TJ < +125°C
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Up to 7A VTT Current
Applications
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Desktop Computers
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Notebook computers
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Communication systems
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Video cards
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DDR/DDR2/DDR3 memory termination
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Typical Application COUT = 330ìFEN220pF3kVCC= 5.0VVDDQ= 1.35Vto 6.0VVTT =1/2 VDDQSUD50N02-06PMIC5162BMMVDDQVCCVREFHDCOMPENLDFBGND120pF
Typical SSTL-2 Application
(Two MOSFETs Support a 3A Application) June 2009 M9999-061509