General Description

The RT9020 is a high-performance, 500mA LDO regulator, offering extremely high PSRR and ultra-low dropout, ideal for portable RF and wireless applications with demanding performance and space requirements.

The RT9020 quiescent current is as low as 25μA, further prolonging the battery life. The RT9020 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in handheld wireless devices.

The RT9020 consumes typical 0.7μA in shutdown mode and has fast turn-on time less than 70μs (without CSS). The other features include ultra-low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. Tiny packages SOT-23-5 and SC-70-5 are available.

Applications

Digital Still Camera

CDMA/GSM Cellular Handsets

Portable Information Appliances

Laptop, Palmtops, Notebook Computers

Mini PCI & PCI-Express Cards

PCMCIA & New Cards

Features

Wide Operating Voltage Ranges : 2.2V to 5.5V

Low Dropout : 250mV at 500mA

5mA Discharge Current of VOUT when IC Shutdown

Ultra-Low-Noise for DSC Application

Ultra-Fast Response in Line/Load Transient

Current Limiting Protection

Thermal Shutdown Protection

High Power Supply Rejection Ratio

Output Only 1μF Capacitor Required for Stability

TTL-Logic-Controlled Shutdown Input

RoHS Compliant and 100% Lead (Pb)-Free