UR6516B

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

5 of 6

www.unisonic.com.tw

QW-R502-449.a

FUNCTIONAL DESCRIPTION

The UTC UR6516B is a low cost linear regulator, which can sink and source 2A of current without an external heat

sink.

The UTC UR6516B incorporates power MOSFETs that are capable of sourcing and sinking 2A of current while

keeping perfect voltage regulation. By using the external feedback, the output voltage can be regulated within 3% or

less. Separate voltage supply inputs have been added to fit applications with various power supplies for the databus

and power buses.

OUTPUTS

The VOUT pins (output voltage pins) are connected to the databus, address, or clock lines via an external inductor.

The output voltage varies depending on the input voltage.

INPUTS

The output voltage is determined by the input voltage. The desired output voltage could be programmable by two

external voltage divider resistors.

The VIN pin is suggested to connect to VDDQ of memory module for better tracking with memory VDDQ.

OTHER SUPPLY VOLTAGES

VCCA provide the voltage supply to the logic section and internal error amplifiers of UTC UR6516B.