S5U1284

www.DataSheet4U.com S5U1284 4A Ultra Low Dropout Positive Adjustable or Fixed-Mode Regulator RoHS Compliant Product Elektronische Bauelemente Description The S5U1284 is 4A regulator with extremely low dropout voltage. This product is specifically designed to provide well regulated supply for applications requiring 2.8V or lower voltages from 3.3V ATX power supplies where high efficiency of the switch can be achieved without the cost and compliexity associated with switching regulator. One such application is the new graphic chipsets that requires anywhere from 2.4V to 2.7V supply. Features * 0.7V Max. Dropout Voltage At 4A Load Current * Adjustable or Fixed Output Voltage 1.5V,1.8V,2.5V,3.3V,5.0V * Output Current Limiting * Good Noise Rejection * Fast Transient Response * Built-in Thermal Shutdown REF. A b L4 c L1 E Millimeter Min. Max. 4.40 4.80 0.66 0.91 0.00 0.30 B 0.36 0.5 2.29 2.79 9.80 10.4 REF. c2 L2 D e L Millimeter Min. Max. 1.25 1.45 1.27 REF. 8.6 9.0 1.70 REF. 14.6 15.8 0˚ 8˚ Typical Circuit S5U1284-25 Block Diagram Pin Descriptions Name Adj (Gnd) Vsense Vin I I I/O Description A resistor divider from this pin to the Vout pin and ground sets the output voltage. (Gnd only for fixed mode) The pin is the positive side of the reference that allows remote load sensing to achieve excellent load regulation. A minimum of 10uF capacitor must be connected from this pin to ground to insure stability. The input pin of regulator. Typically a large storage capacitor is ...