Final Rev 2.1

1

POWER MANAGEMENT

Features



Input voltage range — 2.3V to 5.5V



Single 300mA (maximum) output



Dropout at 300mA load — 180mV (Typ)



Quiescent supply current — 50μA



Shutdown current — 100nA





Over-temperature protection



Short-circuit protection



Under-voltage lockout



Internal 100

Ω output discharge



SC70-5 Package

Applications



LoRa® sensors, nodes and gateways



IoT low power radio applications



Consumer electronics



Wearable & Portable electronics



GPS devices



Set top boxes/HDTVs



Communication electronics



Industrial electronics

SC573

300mA Low-Noise LDO Regulator

Description

SC573 is a low dropout linear voltage regulator designed

for use in applications with space constraints and low

power requirements. SC573 provides fixed output

voltages, delivering up to 300mA of load current. Fixed

output voltage eliminates the need for external feedback

resistors.

The device has an input, output and enable pin. Using the

lowest possible input voltage for the output voltage

reduces the power loss and improves overall package

thermal performance and efficiency.

The device has fast turn-on and turn-off voltage slew rate

for fast system start up and reset response. Low quiescent

current extends battery life.

SC573 provides protection circuitry such as short-circuit

protection,

under-voltage

lockout,

and

thermal

protection to prevent device failures. Stability is

maintained by using 1µF capacitors on the output pins.

SC70-5 package and small ceramic bypass capacitors

minimize the required PCB area.

Typical Application Circuit

VIN

EN

EN

GND

VIN

SC573

1µF

1µF

VOUT

VOUT