UR5516A

LINEAR INTEGRATED CIRCUIT

UNISONIC TECHNOLOGIES CO., LTD

2 of 8

www.unisonic.com.tw

QW-R101-018.B

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PI N CON FI GU RAT I ON

NC: No Connection

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PI N DESCRI PT I ON

PIN NAME

I/O

DESCRIPTION

I

Main power input pin. Connect this pin to a voltage source and an input capacitor. The

providing a current path from VIN pin.

GND

O

Power and signal ground. Connect this pin to system ground plane with shortest traces.

transistor, providing a current path to GND pin. This pin is also the ground path for

internal control circuitry.

I

Power input pin for internal control circuitry. Connect this pin to a voltage source,

providing a bias for the internal control circuitry. A bypass capacitor is usually connected

near this pin.

I

Reference voltage input and active-low shutdown control pin. Apply a voltage to this pin

as a reference voltage for the UTC UR5516A. Connect this pin to a resistor divider,

Applying and holding this pin low by an open-drain transistor to shut down the output.

O

Output pin of the regulator. Connect this pin to load. Output capacitors connected this pin

improves stability and transient response. The output voltage tracks the reference

voltage and is capable of sourcing or sinking current up to 3A.

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BLOCK DI AGRAM