UR5517

Preliminary

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

2 of 6

www.unisonic.com.tw

QW-R102-041.a

PIN CONFIGURATIONS

PIN DESCRIPTION(Note)

PIN NAME

PIN TYPE

PIN DESCRIPTION

VDDQSNS

I

VDDQ sense input

VLDOIN

I

Power supply for the VTT & VTTREF output stage

VTT

O

Output voltage for connection to termination resistors, equal to VDDQSNS/2

PGND

O

Power ground output for the VTT output

VTTSNS

I

Voltage sense input for the VTT. Connect to plus terminal of the output capacitor

VTTREF

O

Buffered output that is a reference output, equal to VDDQSNS/2

S3

I

Active low suspend to RAM mode control pin, VTT is turned off and left Hi-Z

GND

I

Ground

S5

I

Active low shutdown control pin, both VTT&VTTREF are turned off and discharged to ground

VIN

I

Analog input pin

Note：Recommend connecting the Thermal Pad to the GND for the excellent power dissipation.