LD1083

LD1083 7.5A Low Dropout Positive Regulator GENERAL DESCRIPTION The LD1083 is a low dropout three terminal regulator with 7.5A output current capability. The output voltage is adjustable with the use of a resistor divider or fixed 1.5V/1.8V/2.5V/3.3V/5V. Dropout voltage is guaranteed to be at maximum of 1.5V 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. FEATURES ‹ 1.5V Max. Dropout Voltage at 7.5A Output Current. ‹ Fast Transient Response. ‹ Extremely Tight Line and Load Regulation. ‹ Current Limiting and Thermal Protection. ‹ Adjustable Output Voltage or Fixed 1.5V, 1.8V,2.5V,3.3V,5.0V. APPLICATIONS „ Mother Board I/O Power Supplies „ Microprocessor Power Supplies. „ High Current Regulator „ Post Regulator for Switching Supply. „ Notebook Computers BLOCK DIAGRAM Ver1.0 1 OB2269 LD1083 PIN DESCRIPTIONS ADJ PIN - Providing VREF=1.25V (typ.) for adjustable VOUT. VREF=VOUT-VADJ and IADJ=60u A (typ.) /GND PIN- Power ground. VOUT PIN - Adjustable output voltage. VIN PIN - Power Input. TYPICAL APPLICATION CIRCUIT VREF=VOUT - VADJ=1.25V (typ.) VOUT=VREF x (1+RF2/RF1)+ IADJ x RF2 IADJ=60uA ( typ.) (1) capacitors. (2) C2 required for stability. ORDERING INFORMATION LD1083 Ver1.0 C Package Type E:TO-252 M:TO-263-2 T:TO-220 MA:TO-263-3 Output ...