General Description
The RTQ2531A is a low-noise, high accuracy, lowdropout
linear regulator (LDO), and is capable of
sourcing 500mA. The device supports single input
supply voltage as low to 1.7V, which makes it easy to
use.
The RTQ2531A is designed with high PSRR and low
noise, which can meet the requirements of noisesensitive
applications such as RF, PLL, Clocking and
analog circuits. The regulator control circuitry includes a
programmable soft-start circuit and short circuit, reverse
current, and over-temperature protection. Other
features include an enable input and a power-OK output.
The device is fully specified over the temperature range
of TJ = −40°C to 125°C and is offered in a WDFN-8SL
2x2 package.

Features
⚫ Input Voltage Range : 1.7V to 5.5V
⚫ Output Voltage Range : 0.6V to 5.3V
⚫ Accurate Voltage Reference
 0.6V 1.5%, Over −40C to 125C
⚫ Ultra High PSRR : 48dB at 500kHz
⚫ Excellent Noise Immunity : 25VRMS
⚫ Ultra Low Dropout Voltage : 150mV at 500mA
⚫ Enable Control
⚫ Short-Circuit Protection
⚫ Output-to-Input Reverse Current Protection
⚫ Support Power-OK Output Indicator Function
⚫ RoHS Compliant and Halogen Free

Applications
⚫ Portable Electronic Device
⚫ Optical Modules
⚫ Camera Modules
⚫ PLL/Synthesizer, Clocking Sensors
⚫ Medium-Current, Noise Sensitive Application