LR9193 Datasheet, PDF (1/9 Pages) Leshan Radio Company – 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator

300mA Ultra-low Noise, Ultra-Fast
CMOS LDO Regulator
LESHAN RADIO COMPANY, LTD.
LR9193
FEATURES
 Ultra-low Noise for RF Application
 Ultra-Fast Respose in Line/Load Transient
 Quick Start-Up (Typically 50S)
 <0.01A Standby Current When Shutdown.
 Low Dropout:220mV@300mA
 Wide Operating Voltage Ranges:2.5V to
5.5V
 TTL-logic-Controlled Shutdown Input
 Low Temperature Coefficient
 Current Limiting Protection
 Thermal Shutdown Protection
 Only 1F Output Capacitor Required for
Stability
 High Power Supply Rejection Ratio
 Custom Voltage Available
 Fast output discharge
 Available in 5-Lead SOT-23 and SC-70
Package
APPLICATIONS
 Cellular and Smart Phones
 Battery-Powered Equipment
 Laptop, Palmtops,Notebook Computers
 Hand-Held Instruments
ORDERING INFORMATION
LR9193-XX XX
 PCMCIA Cards
 MP3 Players
 Portable Information Appliances
DESCRIPTION
The LR9193 is designed for portable RF and
wireless applications with demanding
performance and space requirements. The
LR9193 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 LR9193 also works with low-
ESR ceramic capacitors, reducing the
amount of board space necessary for power
applications, critical in hand-held wireless
devices. The LR9193 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 5-lead of
SC-70,SOT-23,packages.
TYPICAL APPLICATION
Package:
RN:SOT-23-5
URN:SC-70-5
3.3V-5.5V
C1
1uF
0
0
Chip Enable
1 _VIN
VOUT ⁵
2 _{GND LR9193}
3 _EN
BP ⁴
Output Voltage:
12:1.2V
15:1.5V
18:1.8V
28:2.8V
33::3.3V
CT: custom fixed output(50mv step)
AD:Adjustable
R1
100k
0
2.8V
C2
1uF
0
C3
22nF
0
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