BL9165
500mA High PSRR, Ultra-low Noise,
Ultra-Fast CMO LDO Regu
lator
FEATURES
PCMCIA Cards
Portable Information Appliances
Ultra-low Noise
Ultra-Fast Transient Response
High PSRR: -87dB @ 217Hz
-83dB @ 1KHz
DESCRIPTION
-54dB @ 1MHz
The BL9165 is designed for portable
applications with demanding performance
and space requirements. The BL9165
performance is optimized for battery-powered
systems to deliver ultra-low noise and low
quiescent current. Regulator ground current
increases only slightly in dropout, further
prolonging the battery life. The BL9165 also
works with low-ESR ceramic capacitors,
reducing the amount of board space
necessary for power applications, critical in
hand-held wireless devices. The BL9165
consumes only 0.1µA current in shutdown
mode and has fast turn-on time (Typical
100µs ). The other features include ultra- low
dropout voltage, high output accuracy, current
limiting protection, and high ripple rejection
ratio.
0.1A Standby Current When Shutdown
Low Dropout: 240mV@500mA (VOUT=2.8V)
Wide Operating Voltage Ranges:
1.8V to 5.5V
Current Limiting and Short Circuit
Current Protection
Thermal Shutdown Protection
Only 1F Output Capacitor Required for
Stability
Fast output discharge
Available in SOT23-5, SC70-5 and
DFN1X1-4L Packages
APPLICATIONS
Cellular and Smart Phones
Cordless Telephones
Camera and Machine Vision Modules
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
TYPICAL APPLICATION
1
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