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MIC5167

Micrel Semiconductor
Part Number MIC5167
Manufacturer Micrel Semiconductor
Description Synchronous Buck DDR Memory Terminator
Published Jul 22, 2014
Detailed Description MIC5167 1MHz, 6A, Integrated Switch, High-Efficiency, Synchronous Buck DDR Memory Terminator General Description The MI...
Datasheet PDF File MIC5167 PDF File

MIC5167
MIC5167

Overview
MIC5167 1MHz, 6A, Integrated Switch, High-Efficiency, Synchronous Buck DDR Memory Terminator General Description The MIC5167 is a high-efficiency, 6A, integrated switch, synchronous regulator designed for use as a double data rate (DDR) or quad data rate (QDR) terminator.
The MIC5167 is optimized for highest efficiency, achieving more than 94% efficiency while still switching at 1MHz over a broad range.
The device works with a small 0.
4µH inductor and 300µF output capacitor.
The MIC5167 offers a simple, low-cost, JEDEC-compliant solution for terminating high-speed, low-voltage, digital buses (i.
e.
DDR, DDR2, DDR3, DDR3L, DDR3UL, DDR4, SCSI, GTL, SSTL, HSTL, LV-TTL, LV-PECL, and LV_ECL) with a Power-Good (PG) output.
The output voltage is controlled externally by input to the VDDQ pin.
The output voltage is one-half the voltage applied to the VDDQ pin.
The output voltage can be adjusted down to 0.
6V to address low-voltage power needs.
The MIC5167 will source 6A and sink up to 6A.
A window comparator monitors the output voltage and controls the PG output.
If the output voltage is outside ±15% limit of VREF the PG is driven low.
® The MIC5167 is available in a 24-pin 4mm x 4mm MLF with a junction operating range from –40°C to +125°C.
Data sheets and support documentation can be found on Micrel’s web site at: www.
micrel.
com.
Features • • • • • • • • • • • • • Input voltage range: 2.
6V to 5.
5V VTT voltage adjustable down to 0.
35V Output load current up to ±6A Power-Good (PG) fault flag Efficiency > 94% across a broad load range Ultra-fast transient response Easy RC compensation 100% maximum duty cycle Fully-integrated MOSFET switches Micropower shutdown Thermal-shutdown and current-limit protection 24-pin 4mm x 4mm MLF® –40°C to +125°C junction temperature range Applications • Double data rate (DDR) or quad data rate (QDR) memory terminator • High power density point-of-load conversion • Servers and routers • DVD recorders / Blu-ray players • Computing peripherals • ...


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