BL9161

FEATURES  Ultra-low Noise  Ultra-Fast Response in Line/Load Transient  0.01A Standby Current When Shutdown  Low Dropout: 230mV@300mA  Wide Operating Voltage Ranges: 2.2V to 5.5V  Low Temperature Coefficient  Current Limiting Protection  Thermal Shutdown Protection  Only 1F Output Capacitor Required for Stability  High Power Supply Rejection Ratio  Fast output discharge  Available in SOT23-5 ，SC70-5 and DFN1×1-4L Package APPLICATIONS  Cellular and Smart Phones  Cordless Telephones  Battery-Powered Equipment  Laptop, Palmtops, Notebook Computers BL9161 300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator Hand-Held Instruments  PCMCIA Cards  MP3/MP4/MP5 Players  Portable Information Appliances DESCRIPTION The BL9161 is designed for portable applications with demanding performance and space requirements. The BL9161 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 BL9161 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The BL9161 consumes only 0.01µA current in shutdown mode and has fast turn-on time (Typical 50µs). The other features include ultra low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. ORDERING INFORMATION BL9161 XX X X XXX TYPICAL ...