BL9193 BL9193
? Ultra-low Noise for RF Application
? Ultra-Fast Response 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
? PCMCIA Cards
? MP3 Players
? Portable Information Appliances
DESCRIPTION
The BL9193 is designed for portable RF and
wireless applications with demanding performance
and space requirements. The BL9193
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 BL9193 also works with low-
ESR ceramic capacitors, reducing the
amount of board space necessary for power
applications, critical in hand-held wireless
devices. The BL9193 consumes less than
0.01μA in shutdown mode and has fast turnon
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.
