SC561

8

Pin Configurations and Descriptions

SC561

Pin Name Pin Function

1

OUTB

Output for LDOB

2

VIN

Input supply voltage terminal

3

OUTA

Output for LDOA

4LOAD

Dynamic bias control — pull this pin high for normal operation at all load currents. Pull this pin low for lowest

I

Q

at loads less than 2mA. This pin is a logic input and cannot be left unconnected.

5

GND

Analog and digital ground

6

EN

Logic input — active HIGH enables both LDOs

7

BYP

LDO bypass output — bypass with a 22nF capacitor

8

PGOOD

Power Good open-drain output — monitors the level of LDOA, switches low when the output drops out of

regulation. Tie to VIN or OUTA via a 100k Ω resistor. Leave floating when function is not required.