RT9193_08 Datasheet, PDF (1/14 Pages) Richtek Technology Corporation – 300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator

RT9193
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator
General Description
Features
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 0.01uA in
shutdown mode and has fast turn-on time less than 50us.
The other features include ultra low dropout voltage, high
output accuracy, current limiting protection, and high ripple
z Ultra-Low-Noise for RF Application
z Ultra-Fast Response in Line/Load Transient
z Quick Start-Up (Typically 50us)
z < 0.01uA 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 1uF Output Capacitor Required for Stability
z High Power Supply Rejection Ratio
z Custom Voltage Available
z RoHS Compliant and 100% Lead (Pb)-Free
rejection ratio. Available in the SC-70-5, SOT-23-5,
TSOT-23-5, WDFN-6L 2x2 and MSOP-8 packages.
Applications
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
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
Operating Temperature Range
P : Pb Free with Commercial Standard ^{For marking information, contact our sales representative}
G : Green (Halogen Free with Commer- ^{directly or through a Richtek distributor located in your}
cial Standard)
area, otherwise visit our website for detail.
Output Voltage
15 : 1.5V
16 : 1.6V
:
49 : 4.9V
50 : 5.0V
1H : 1.85V
2H : 2.85V
4G : 4.75V
Note :
Richtek Pb-free and Green 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.
`100% matte tin (Sn) plating.
Typical Application Circuit
V_IN
C_IN
1uF/X7R
Chip Enable
RT9193
VIN VOUT
GND
EN
BP
V_OUT
C_OUT
1uF/X7R
C_BP
22nF
DS9193-11 May 2008
www.richtek.com
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