FEATURES
l l n DESCRIPTION
Dropout voltage is guaranteed to be at maximum of 1.4V with the maximum output current. Its low dropout voltage and fast transient response make it ideal for low voltage microprocessor applications. Current limit and thermal protection provide protection against any overload condition that would create excessive junction temperatures. Dropout Voltage 1.3V at 5A Output Current. Fast Transient Response. Tight Line and Load Regulation. Current Limiting and Thermal Protection. Adjustable Output Voltage or Fixed 1.5V, 1.8V, 3.3V. Standard 3-Pin Power Packages. l Extremely l l l n APPLICATIONS
l l l l Mother Board I/O Power Supplies. Microprocessor Power Supplies. High Current Regulator. Post Regulator for Switching Supply. n TYPICAL APPLICATION CIRCUIT VIN 5V 3 AIC1084 1 ADJ C1 + 10µF 2 VREF VOUT 3.3V RF1 125Ω 1% + C2 RF2 10µF 205Ω 1% VR E F=VOUT - VADJ =1.25V (typ.) VOUT =VREF x (1+RF2/RF1)+ IADJ x RF2 IADJ =55µA (typ.) (1) C1 needed if device is far away from filter capacitors. (2) C2 required for stability.
Analog Intergrations Corporation
