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.

FEATURES
Ultra-low Noise for RF Application
Ultra-Fast Response in Line/Load
Transient
Quick Start-Up (Typically 50μS)
<0.01μA Standby Current When
Shutdown.
Low Dropout:210mV@300mA
Wide Operating Voltage Ranges:2V to
6V
TTL-logic-Controlled Shutdown Input
Low Temperature Coefficient
Current Limiting Protection
Thermal Shutdown Protection
Only 1μF 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/MP4/MP5 Players
Portable Information Appliances