The is a low dropout three terminal regulator with 3A output current capability. The output voltage is adjustable with the use of a resistor divider or fixed 1.8V, 2.5V and 3.3V. Dropout voltage is guaranteed at a 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 limiting and thermal protection provides protection against any overload condition that would create excessive junction temperatures.

Dropout Voltage at 3A Output Current. Fast Transient Response. Extremely Tight Line and Load Regulation. Current Limiting and Thermal Protection. Adjustable Output Voltage or Fixed 1.8V, 2.5V and 3.3V. Standard 3-Pin Power Packages.

Mother Board I/O Power Supplies. Microprocessor Power Supplies. High Current Regulator. Post Regulator for Switching Supply.

VREF = VOUT - VADJ = 1.25V (typ.) RF2 VOUT = VREF I ADJ RF1 I ADJ 55 µA (typ.) (1) C1 needed if device is far away from filter capacitors. (2) C2 required for stability.

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AIC1085-XXCXXX PACKING TYPE TR: TAPE & REEL TB: TUBE PACKAGING TYPE T: TO-220 OUTPUT VOLTAGE DEFAULT: ADJUSTABLE 33: 3.3V Example: à 1.5V version in TO-252 Package & Taping & Reel Packing Type PIN CONFIGURATION TO-252

VIN pin to ADJ/ GND pin Operating Junction Temperature Range Storage Temperature Range Thermal Resistance Junction to Case TO-263, TO-220 Thermal Resistance Junction to Ambient TO-252 TO-220 Lead Temperature (Soldering) 10 sec. (Assume no ambient airflow, no heatsink) °C 12.5° C/W /W 100 °C/W 260 °C

TEST CONDITIONS AIC1085 (ADJ) °C AIC1085-15, VIN =5V AIC1085-18, VIN =5V AIC1085-25, VIN =5V AIC1085-33, VIN =5V ADJ: 2.65V VIN 7V, VOUT=1.25V Fix : VOUT+1.4V VIN =25 °C VOUT, VREF C 2.65V VIN 7V 2.65V VIN 10KHz 120Hz input ripple