MIC5165 Datasheet, PDF (1/24 Pages) Micrel Semiconductor – Dual Regulator Controller for DDR3 GDDR3/4/5 Memory Termination

MIC5165
Dual Regulator Controller for DDR3
GDDR3/4/5 Memory Termination
General Description
Features
The MIC5165 is a dual regulator controller designed
specifically for low-voltage memory termination
applications such as DDR3 and GDDR3/4/5. The MIC5165
offers a simple, low-cost JEDEC-compliant solution for
terminating high-speed, low-voltage digital buses with a
Power Good (PG) signal.
• Input voltage range: 0.75V to 6V
• Up to 7A V_TT Current
• Tracking programmable output
• Power Good signal
• Wide bandwidth
The MIC5165 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 being sunk by the regulator.
Designed to provide a universal solution for memory
termination regardless of input voltage, output voltage, or
load current, the desired MIC5165 output voltage can be
programmed by forcing the reference voltage externally to
the desired voltage.
The MIC5165 operates from an input voltage as low as
0.75V up to 6V, with a second bias supply input required
for operation. The MIC5165 is available in a tiny MSOP-10
package with an operating junction temperature range of
–40°C to +125°C.
• Logic-controlled enable input
• Requires minimal external components
• DDR3, GDDR3/4/5 memory termination
• -40°C < T_J < +125°C
• Tiny MSOP-10 package
Applications
• Desktop Computers
• Servers
• Notebook computers
• Workstations
• DDR3 andGDDR3/4/5 Memory Termination
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
____________________________________________________________________________________________________________
Typical Application
MIC5165 as a DDR3 Memory Termination Device for 3.5A Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
June 2010
M9999-061510-B