MC34716EP

Document Number: MC34716 NXP Semiconductors Rev. 8.0, 4/2016 Data sheet: Technical Data 1.0 MHz dual switch-mode DDR 34716 power supply The 34716 is a highly integrated, space-efficient, low cost, dual synchronous buck switching regulator with integrated N-channel power MOSFETs. It is a high performance point-of-load (PoL) power supply with its second output DUAL SWITCH-MODE DDR POWER having the ability to track an external reference voltage. it provides a full power SUPPLY supply solution for Double-Data-Rate (DDR) Memories. Channel one provides a source only, 5.0 A drive capability, while channel two can sink and source up to 3.0 A. With its high current drive capability, channel one can be used to supply the VDDQ to the memory chipset. The second channels ability to track a reference voltage provides an ideal means of supporting the termination voltage (VTT) required by modern data buses such as Double-Data-Rate (DDR) memory buses, including, but not limited to DDR, DDR2, DDR3 and Low power DDR3/DDR4 memories. Both channels are highly efficient with tight output regulation. The 34716 also provides a buffered output reference voltage (VREFOUT) to the memory chipset. The 34716 SMARTMOS device offers a variety of control, supervisory and protection functions that simplify the implementation of complex designs. It is housed in a Pb-free, thermally enhanced and space efficient 26-pin exposed EP SUFFIX 98ASA00702D pad QFN. 26-PIN QFN Features 50 m integrated N-channel power MOSFETs Input voltage operating range from 3.0 to 6.0 V 1% accurate output voltages, ranging from 0.6 to 3.6 V The second output tracks 1/2 an external reference voltage 1% accurate buffered reference output voltage Programmable switching frequency range from 200 kHz to 1.0 MHz Programmable soft start timing for channel one Over-current limit and short-circuit protection on both channels Thermal shutdown Output over-voltage and under-voltage detection Active low power good output signal Active low standby and shutdown inputs . 34716 3.0 V to 6.0 V V IN PVIN2 VIN V DDQ VREFIN PVIN1 BOOT1 BOOT2 V DDQ SW2 V SW1 TT VOUT2 VOUT1 Termination Resistors VDDQ INV2 INV1 DDR Memory DDR Memory Memory Bus COMP1 COMP2 Chipset Controller PGND1 VREFOUT V V REF VDDI PGND2 IN FREQ PG MCU STBY ILIM1 GND SD Figure 1. Simplified application diagram 2016 NXP B.V.1 Orderable parts Table 1. Orderable part variations Part number Notes Temperature (T ) Package A (1) MC34716EP -40 C to 85 C 26 pin QFN Notes 1. To order parts in Tape & Reel, add the R2 suffix to the part number. 34716 2 NXP Semiconductors