®
RTQ2532W
2A, 6.5V, Ultra Low Noise, Ultra Low Dropout Linear Regulator
General Description
Features
Input Voltage Range : 1.1V to 6.5V
The RTQ2532W is a high-current (2A), low-noise
(6.8μVRMS), high accuracy (1% over line, load, and
temperature), low-dropout linear regulator (LDO) capable
of sourcing 2A with extremely low dropout (max. 125mV).
The device output voltage is pin-selectable (up to 3.95V)
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 to 1.1V that makes it easy to use.
Two Output Voltage Modes
0.8 V to 5.5V (Set by a Resistive Divider)
0.8 V to 3.95V (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
6.8μVRMS at 0.8V Output
10μVRMS at 3.3V Output
Ultra Low Dropout Voltage : 125mV at 2A
Enable Control
The low noise, high PSRR and high output current capability
makes the RTQ2532W ideal to power noise-sensitive
devices such as analog-to-digital converters (ADCs),
digital-to-analog converters (DACs), and RF components.
With very high accuracy, remote sensing, and soft-start
capabilities to reduce inrush current, the RTQ2532W is
ideal for powering digital loads such as FPGAs, DSPs,
andASICs.
Programmable Soft-Start Output
Stable with a 22μF or Larger Ceramic Output
Capacitor
Support Power-Good Indicator Function
RoHS Compliant and Halogen Free
The external enable control and power good indicator
function makes the control sequence easier. The output
noise immunity is enhanced by adding external bypass
capacitor on theNR/SS pin. The device is fully specified
over the temperature range of TJ = −40°C to 125°C and is
offered in a VQFN-20L 5x5 package.
Applications
Portable ElectronicDevices
Wireless Infrastructures : SerDes, FPGA, DSP
RF, IF Components : VCO, ADC, DAC, LVDS
Pin Configuration
(TOP VIEW)
Ordering Information
RTQ2532W
20
19
18
17
16
Pin 1 Orientation***
(2) : Quadrant 2, Follow EIA-481-D
1
2
3
4
15
14
13
12
VOUT
SNS
VIN
Package Type
QV : VQFN-20L 5x5 (V-Type)
EN
FB
NR/SS
NC
GND
Lead Plating System
G : Green (Halogen Free and Pb Free)
PGOOD
50mV
5
11
Note :
1.6V
21
***Empty means Pin1 orientation is Quadrant 1
Richtek products are :
6
7
8
9
10
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
VQFN-20L 5x5
Copyright 2019 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DSQ2532W-00 July 2019
www.richtek.com
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