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  Richtek Technology Electronic Components Datasheet  

RTQ2502A Datasheet

Ultra Low Dropout Linear Regulator

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®
RTQ2502A
2A, 6.5V, Ultra Low Noise, Ultra Low Dropout Linear Regulator
General Description
The RTQ2502A is a high-current (2A), low-noise (6μVrms),
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.
The low noise, high PSRR and high output current capability
makes the RTQ2502A 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 RTQ2502A is
ideal for powering digital loads such as FPGAs, DSPs,
and ASICs.
The external enable control and power good indicator
function makes 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 the VQFN-20L 5x5 package.
Features
Input Voltage Range : 1.1V to 6.5V
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
6μVRMS at 0.8V Output
Ultra Low Dropout Voltage : 125mV at 2A
Enable Control
Programmable Soft-Start Output
Stable with a 22μF or Larger Ceramic Output
Capacitor
Support Power-Good Indicator Function
RoHS Compliant and Halogen Free
Applications
Portable Electronic Device
Wireless Infrastructure : SerDes, FPGA, DSP
RF, IF Components : VCO, ADC, DAC, LVDS
Ordering Information
RTQ2502A
Pin 1 Orientation***
(2) : Quadrant 2, Follow EIA-481-D
Package Type
QV : VQFN-20L 5x5 (V-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
***Empty means Pin1 orientation is Quadrant 1
Richtek products are :
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.
Copyright ©2019 Richtek Technology Corporation. All rights reserved.
DSQ2502A-01 September 2019
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1


  Richtek Technology Electronic Components Datasheet  

RTQ2502A Datasheet

Ultra Low Dropout Linear Regulator

No Preview Available !

RTQ2502A
Pin Configuration
(TOP VIEW)
VOUT
SNS
FB
PGOOD
50mV
1
2
3
4
5
20 19 18 17 16
GND
15 VIN
14 EN
13 NR/SS
12 NC
21 11 1.6V
6 7 8 9 10
VQFN-20L 5x5
Marking Information
RTQ2502AGQV : Product Number
RTQ2502A
GQV
YMDNN
YMDNN : Date Code
Copyright ©2019 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DSQ2502A-01 September 2019


Part Number RTQ2502A
Description Ultra Low Dropout Linear Regulator
Maker Richtek
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