BL9169
300mA,Ultra-low noise, Small Package
Ultra-Fast CMOS LDO Regulator
General Description
The BL9169 is designed for portable RF and wireless applications with demanding performance and
space requirements. The BL9169 performance is optimized for battery-powered systems to deliver
ultra low noise and low quiescent current. The BL9169 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power applications, critical in hand-held wireless
devices.
The BL9169 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. It is
available in the 5-lead of SOT23-5 and TSOT23-5 packages.
Features
Ultra-Low-Noise for RF Application
2.5V- 5.5V Input Voltage Range
Low Dropout : 220mV @ 300mA
1.2V, 1.5V, 1.8V, 2.5V, 2.8V,3.0V,3.3V, 3.6V and 5V Fixed
300mA Output Current, 550mA Peak Current
High PSSR:-76dB at 1KHz
0.01uA Standby Current When Shutdown
TTL-Logic-Controlled Shutdown Input
Ultra-Fast Response in Line/Load transient
Current Limiting and Thermal Shutdown Protection
Quick start-up (typically 50uS)
Available in SOT23-5 and TSOT23-5 Package
Applications
Portable Media Players/MP3 players
Cellular and Smart mobile phone
LCD
DSC Sensor
Wireless Card
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