G965 Global Mixed-mode Technology Inc. 1.8A Low Dropout Regulator with Enable Features General Description The G965 is a high performance positive voltage regulator designed for use in applications requiring very low dropout voltage at up to 1.8 Amps. Since it has superior dropout characteristics compared to regular LDOs, it can be used to supply 2.5V on motherboards or 1.5V, 1.8V on peripheral cards from the 3.3V supply thus allowing the elimination of costly heatsinks. An enable pin further reduces power dissipation while shut down. The G965 provides excellent regulation over variations in line, load and temperature. Adjustable Output from 1.2V to 5V Using External Resistors 1.5V, 1.8V and 2.5V Options by Setting ADJ Pin Below 0.2V Over Current and Over Temperature Protection 500mV Dropout @1.5A Enable Pin 10μA Quiescent Current in Shutdown 1.5V, 1.8V and 2.5V Fixed Vo Options by Setting ADJ Pin Below 0.2V SOT-223-5 and SOP-8 Package The G965 is available with 1.5V, 1.8V and 2.5V internally preset outputs that are also adjustable using external resistors. Applications Battery Powered Systems Motherboards Peripheral Cards Network Cards Set Top Boxes Medical Equipment Notebook Computers Ordering Information ORDER NUMBER (Pb free / Green) MARKING TEMP. RANGE PACKAGE G965-15ADJTS1Uf G965-15 -40°C ~ +85°C SOT-223-5 G965-18ADJTS1Uf G965-18 -40°C ~ +85°C SOT-223-5 G965-25ADJTS1Uf G965-25 -40°C ~ +85°C SOT-223-5 G965-15ADJP1Uf G965-15 -40°C ~ +85°C SOP-8 G965-18ADJP1Uf G965-18 -40°C ~ +85°C SOP-8 G965-25ADJP1Uf G965-25 -40°C ~ +85°C SOP-8 Note: TS: SOT-223-5 P1: SOP-8 1: Bonding Code U : Tape & Reel e.g. 18 denotes the 1.8V output voltage. Pin Configuration Typical Application Circuit IENH R3 G965 GND 5 Top View 1 2 3 VEN VIN VO 4 ADJ SOT-223-5 VEN 1 8 GND VIN 2 7 GND VO 3 6 GND ADJ 4 5 GND G965 VEN VEN VIN VIN VO VO ADJ R1 C1 22µF GND C2 47µF R2 SOP-8 1.2 (R1+R2) Volts R2 R2=12kΩ is recommended R3 should be connected for current IENH restriction as VEN > VIN+0.3V R2=0Ω sets VO to fixed output mode. VO = TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 2.1 Mar 15, 2011 1