RT9038 Datasheet, PDF (1/9 Pages) Richtek Technology Corporation – The RT9038 is a high-performance

®
RT9038
300mA, Low Dropout, Low Noise Ultra-Fast Without
Bypass Capacitor CMOS LDO Regulator
General Description
The RT9038 is a high-performance, 300mA LDO regulator,
offering extremely high PSRR and ultra-low dropout. The
RT9038 is Ideal for portable RF and wireless applications
with demanding performance and space requirements.
The RT9038 provides quiescent current as low to as 25μA,
further prolonging the battery life. The RT9038 also works
with low-ESR ceramic capacitors, reducing the amount of
board space necessary for power applications, which is
critical in hand-held wireless devices.
The RT9038 consumes typical 0.7μA in shutdown mode
and has fast turn-on time to be less than 40μs. The other
features include ultra-low dropout voltage, high output
accuracy, current limiting protection, and high ripple
rejection ratio. The RT9038 is available in the WDFN-8L
2x2 package.
Ordering Information
RT9038 -
Package Type
QW : WDFN-8L 2x2 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Fixed Output Voltage
12 : 1.2V
13 : 1.3V
:
34 : 3.4V
35 : 3.5V
1B : 1.25V
1H : 1.85V
2H : 2.85V
Features
 Wide Operating Voltage Range : 2.2V to 5.5V
 Low Dropout : 125mV at 300mA
 Ultra-Low-Noise for RF Application
 Ultra-Fast in Line/Load Transient Response
 Current Limiting Protection
 Thermal Shutdown Protection
 High Power Supply Rejection Ratio
 Only 1μF Output Capacitor Required for Stability
 TTL-Logic-Controlled Shutdown Input
 RoHS Compliant and Halogen Free
Applications
 CDMA/GSM Cellular Handsets
 Portable Information Appliances
 Laptop, Palmtops, Notebook Computers
 Hand-Held Instruments
 Mini PCI & PCI-Express Cards
PCMCIA & New Cards
Pin Configurations
(TOP VIEW)
NC 1
VOUT 2
VOUT 3
VOUT 4
8 GND
7 EN
6 VIN
9 _{5 VIN}
WDFN-8L 2x2
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Note :
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 ©2015 Richtek Technology Corporation. All rights reserved.
DS9038-02 July 2015
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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