SC573 300mA Low-Noise LDO Regulator POWER MANAGEMENT Description Features SC573 is a low dropout linear voltage regulator designed for use in applications with space constraints and low Input voltage range 2.3V to 5.5V power requirements. SC573 provides fixed output Single 300mA (maximum) output voltages, delivering up to 300mA of load current. Fixed Dropout at 300mA load 180mV (Typ) output voltage eliminates the need for external feedback Quiescent supply current 50A resistors. Shutdown current 100nA Output noise 100VRMS /V Over-temperature protection The device has an input, output and enable pin. Using the Short-circuit protection lowest possible input voltage for the output voltage Under-voltage lockout reduces the power loss and improves overall package Internal 100 output discharge thermal performance and efficiency. SC70-5 Package The device has fast turn-on and turn-off voltage slew rate Applications for fast system start up and reset response. Low quiescent LoRa sensors, nodes and gateways current extends battery life. IoT low power radio applications Consumer electronics SC573 provides protection circuitry such as short-circuit Wearable & Portable electronics protection, under-voltage lockout, and thermal GPS devices protection to prevent device failures. Stability is Set top boxes/HDTVs maintained by using 1F capacitors on the output pins. Communication electronics SC70-5 package and small ceramic bypass capacitors Industrial electronics minimize the required PCB area. Typical Application Circuit SC573 VOUT VIN VIN VOUT EN EN C OUT C IN GND 1F 1F Final Rev 2.1 1 SC573 Pin Configuration Ordering Information Device 3 Ordering Info Output Voltage Marking SC5H SC573V33RTRC 3.3V SC5L SC573V18RTRC 1.8V Evaluation Board SC573EVB (1) Available in tape and reel only. A reel contains 3,000 devices. (2) Pb-free, halogen hree, RohS / WEEE compliant (3) Voltage Options: for additional fixed output voltage Marking Information options, contact Semtech marketing SC573V18RTRC SC573V33RTRC Final Rev 2.1