G9965 Global Mixed-mode Technology Inc. 1.5A Low Dropout Regulator with Enable Features General Description The G9965 is a high performance positive voltage regulator designed for use in applications requiring very low dropout voltage at up to 1.5 Amps. Since it has superior dropout characteristics compared with regular LDOs, it can be used to supply 2.5V from the 3.3V supply, or to supply 1.8V and 1.5V from the 2.5V supply. Thus allowing the elimination of costly heatsinks. An enable pin further reduces power dissipation while shut down. The G9965 provides excellent regulation over variations in line, load and temperature. It provides over current and over temperature protection functions. 1.5V, 1.8V, 2.5V and Adjustable Outputs Over Current and Over Temperature Protection 500mV Dropout @1.5A Enable Pin 16µA Quiescent Current in Shutdown TO-263-5 Package Applications Battery Powered Systems Motherboards Peripheral Cards Network Cards Set Top Boxes Notebook Computers The G9965 is available with 1.5V, 1.8V, 2.5V and adjustable outputs in TO-263-5 package. Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Pb free) G9965-15TGU G9965-15 -40°C ~ +85°C TO-263-5 G9965-18TGU G9965-25TGU G9965-18 G9965-25 -40°C ~ +85°C -40°C ~ +85°C TO-263-5 TO-263-5 G9965-ADJTGU G9965 -40°C ~ +85°C TO-263-5 Pin Configuration Typical Application Circuit G9965-XX G9965-XX VEN VEN VIN VIN VO VO C1 22µF 1 2 3 4 GND C2 47µF 5 VEN VIN GND VO N.C. TO-263-5 G9965-ADJ G9965-ADJ VEN VEN VIN VIN VO VO R1 C1 22µF 1 2 3 4 GND ADJ C2 47µF R2 5 VEN VIN GND VO ADJ TO-263-5 1.2 (R1+R2) Volts R2 R2=12KΩ is recommended VO = TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.5 Preliminary Apr 15, 2005 1