AF9193 One Cell Lithium-ion/Polymer Battery Protection IC
General Description:
The AF9193 is designed for portable RF and wireless applications with demanding performance and space requirements. The AF9193 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 AF9193 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The AF9193 consumes less than 0.01μA in shutdown mode and 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. Available in the 5-lead of SC-70, SOT-23
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 : 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 1μF Output Capacitor Required for Stability
■ High Power Supply Rejection Ratio
■ Custom Voltage Available
■ RoHS Compliant and Lead (Pb)-Free
Applications：
■ CDMA/GSM Cellular Handsets
■ Battery-Powered Equipment
■ Laptop, Palmtops, Notebook Computers
■ Portable Information Appliance