General Description
The RTQ2513T is a high-current (3A), low-noise (7μVRMS),
high accuracy (1% over line, load, and temperature), lowdropout
linear regulator (LDO), and is capable of sourcing
3A with extremely low dropout (max. 180mV). The device
output voltage is pin-selectable (up to 3.65V) using a PCB
layout without the need of external resistors, thus reducing
overall component count. Designers can achieve higher
output voltage with the use of external resistor divider.
The device supports single input supply voltage as low as
1.1V that makes it easy to use.
The low noise, high PSRR, and high output current
capability make the RTQ2513T ideal to power noisesensitive
devices such as analog-to-digital converters
ADCs), digital-to-analog converters (DACs), and RF
components. To reduce inrush current with very high
accuracy, remote sensing, and soft-start capabilities, the
RTQ2513T is ideal for powering digital loads such as
FPGAs, DSPs, and ASICs.
The external enable control and power good indicator
function make the sequence control easier. The output
noise immunity is enhanced by adding external bypass
capacitor on NR/SS pin. The device is fully specified over
the temperature range of TJ = −40°C to 125°C and is offered
in a WQFN-20L 3.5x3.5 package.

Features
 Input Voltage Range : 1.1V to 6.5V
 Two Output Voltage Modes
 0.5V to 5.5V (Set by a Resistive Divider)
 0.5V to 3.65V (Set via PCB Layout, No External
Resistor Required)
 Accurate Output Voltage Accuracy (1%) Over Line,
Load and Temperature
 Ultra High PSRR : 40dB at 500kHz
 Excellent Noise Immunity
7μVRMS at 0.5V Output
10μVRMS at 3.3V Output
 Ultra Low Dropout Voltage : 180mV at 3A
 Enable Control
 Programmable Soft-Start Output
 Stable with 10μF or higher Output Ceramic
Capacitor
 Support Power-Good Indicator Function
 RoHS Compliant and Halogen Free

Applications
 Portable Electronic Devices
 Wireless Infrastructure : SerDes, FPGA, DSP
 RF, IF Components : VCO, ADC, DAC, LVDS