RT9193-18GB Datasheet, PDF (1/14 Pages) Richtek Technology Corporation – Ultra Low Noise for RF Application, Ultra Fast Response in Line/Load Transient

®
RT9193
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator
General Description
The RT9193 is designed for portable RF and wireless
applications with demanding performance and space
requirements. The RT9193 performance is optimized for
battery-powered systems to deliver ultra low noise and
low quiescent current. A noise bypass pin is available for
further reduction of output noise. Regulator ground current
increases only slightly in dropout, further prolonging the
battery life. The RT9193 also works with low-ESR ceramic
capacitors, reducing the amount of board space necessary
for power applications, critical in hand-held wireless
devices. The RT9193 consumes less than 0.01μA in
shutdown mode and has fast turn-on time less than 50μs.
The other features include ultra low dropout voltage, high
output accuracy, current limiting protection, and high ripple
rejection ratio. Available in the SC-70-5, SOT-23-5,
TSOT-23-5, WDFN-6L 2x2 and MSOP-8 packages.
Ordering Information
RT9193-
Package Type
U5 : SC-70-5
B : SOT-23-5
J5 : TSOT-23-5
QW : WDFN-6L 2x2 (W-Type)
F : MSOP-8
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Output Voltage
15 : 1.5V
16 : 1.6V
:
49 : 4.9V
50 : 5.0V
1H : 1.85V
2H : 2.85V
4G : 4.75V
(1.5V to 5V with 0.1V step is available)
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.
Features
z Ultra Low Noise for RF Application
z Ultra Fast Response in Line/Load Transient
z Quick Start-Up (Typically 50μs)
z <0.01μA Standby Current When Shutdown
z Low Dropout : 220mV @ 300mA
z Wide Operating Voltage Ranges : 2.5V to 5.5V
z TTL-Logic-Controlled Shutdown Input
z Low Temperature Coefficient
z Current Limiting Protection
z Thermal Shutdown Protection
z Only 1μF Output Capacitor Required for Stability
z High Power Supply Rejection Ratio
z Custom Voltage Available
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z CDMA/GSM Cellular Handsets
z Battery-Powered Equipment
z Laptop, Palmtops, Notebook Computers
z Hand-Held Instruments
z PCMCIA Cards
z Portable Information Appliances
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Typical Application Circuit
V_IN
C_IN
1µF/X7R
Chip Enable
RT9193
VIN VOUT
GND
EN
BP
V_OUT
C_OUT
1µF/X7R
C_BP
22nF
(Option for low noise)
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS9193-16 January 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1