®
RT2519W
1A, Low Noise, Ultra High PSRR, Low-Dropout Linear Regulator
General Description
The RT2519W is a high performance positive low dropout
(LDO) regulator designed for applications requiring very
low dropout voltage and ultra high Power Supply Ripple
Rejection (PSRR) at up to 1A. The input voltage range is
from 2.2V to 6V and the output voltage is programmable
as low as 0.8V. A P-MOSFET switch provides excellent
transient response with just a 4.7μF ceramic output
capacitor. The external enable control effectively reduces
power dissipation while shutdown and further output noise
immunity is achieved through bypass capacitor on NR pin.
Additionally, the RT2519W features a precise 3% output
regulation over line, load, and temperature variations. The
device is available in the VDFN-8AL 3x3 package and is
specified from
−40°C
to 125°C.
Features
Very Low Dropout : 170mV Typical at 1A
Ultra High PSRR : 63dB @ 1kHz, 38dB @ 1MHz
Input Voltage Range : 2.2V to 6V
Adjustable Output Voltage : 0.8V to 5.5V
−
40°C to 125°C Operating Junction Temperature
°
°
Range
Excellent Noise Immunity
Fast Response Over Load and Line Transient
Stable with a 4.7μF Output Ceramic Capacitor
μ
Accurate Output Voltage 3% Over Load, Line,
Process, and Temperature Variations
Enable Control
Over-Current Protection
Over-Temperature Protection
Ordering Information
RT2519W
Pin 1 Orientation
***
(2) : Quadrant 2, Follow EIA-481-D
Package Type
QV : VDFN-8AL 3x3 (V-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
***Empty means Pin1 orientation is Quadrant 1
Richtek products are :
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Applications
Telecom/Networking Cards
Motherboards/Peripheral Cards
Industrial Applications
Wireless Infrastructures
Set-Top Boxes
Medical Equipments
Notebook Computers
Battery Powered Systems
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.
�½
Simplified Application Circuit
RT2519W
V
IN
C
IN
Enable
C
NR
EN
NR
GND
FB
R2
VIN
VOUT
R1
C
OUT
V
OUT
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS2519W-00 May 2019
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
