GU1085 Datasheet | GTM

.. ISSUED DATE :2005/06/01 REVISED DATE :2006/06/01C 3A Low Dropout Positive Adjustable or Fixed-Mode Regulator The GU1085 is a low dropout positive adjustable or fixed-mode regulator with minimum of 3A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 3.3V logic supply. GU1085 is also well suited for other applications such as VGA cards. GU1085 is guaranteed to have <1.4V dropout at full load current making it ideal to provide well-regulated outputs of 1.25 to 5.0V with 4.7 to 12V input supply by different output voltage. Description Features 3-Terminal Adjustable or fixed 1.5V,1.8V,2.5V,3.3V,5.0V 1.4V Maximum Dropout at Full Load current Fast Transient response Built-in Thermal Shutdown Output current limiting Package Dimensions REF. A b L4 c L3 L1 E Millimeter REF. Min. Max. 4.40 4.80 c2 0.76 1.00 b2 0.00 0.30 B D 0.36 0.5 e 1.50 REF. L 2.29 2.79 9.80 10.4 L2 Millimeter Min. Max. 1.25 1.45 1.17 1.47 8.6 9.0 2.54 REF. 14.6 15.8 0˚ 8˚ 1.27 REF. Typical Circuit 3.3V/3A 2.5V/3A Block Diagram Page: 1/4 ISSUED DATE :2005/06/01 REVISED DATE :2006/06/01C Pin Descriptions Name Adj (GND) Vout O I/O Pin# 1 2 Adjustable (Ground only for fixed mode) The output of the regulator. A minimum of 10u F capacitor must be connected from this pin to ground to insure stability. The input pin of regulator. Typically a large storage capacitor is connected from this pin to ground to insure that the input voltage does not sag below the minimum dropout voltage during the load transient response. This pin must always be 1.4V higher than Vout in order for the device to regulate properly....