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 re The AF9193 performance is optimized for battery-powered systems to deliver ultra low noise and low 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 E

■ Laptop, Palmtops, Notebook Computers

■ Portable Information Appliance