MIC5167

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) fau...