G975 Global Mixed-mode Technology Inc. 2A Low Dropout Regulator with Enable Features General Description Adjustable Output Low to 0.8V 260mV Dropout @ 2A, VO 1.2V Over Current and Over Temperature Protection Enable Pin Low Reverse Leakage (Output to Input ) Power SOP-8 (FD) Packages with Thermal Pad ±2% Output Voltage VO Power OK Signal 1.05V, 1.2V, 1.8V and 2.5V Options by Setting ADJ Pin Below 0.2V and Adjustable Externally Using Resistors VO Pull Low Resistance when Disable VO Soft Start when Enable The G975 is a high performance positive voltage regulator designed for use in applications requiring very low Input voltage and very low dropout voltage at up to 2 amps. It operates with VPP voltage 5V and output voltage programmable as low as 0.8V. The G975 features ultra low dropout, ideal for applications where VOUT is very close to VIN. Additionally, the G975 has an enable pin to further reduce power dissipation while shutdown. The G975 provides excellent regulation over variations in line, load and temperature. The G975 provides a power OK signal to indicate if the voltage level of VO reaches 92% of its rating value. The G975 is available in the power SOP-8 (FD) package. It is available with 1.05V, 1.2V, 1.8V and 2.5V internally preset outputs that are also adjustable using external resistors. Applications Motherboards Peripheral Cards Network Cards Set Top Boxes Notebook Computers Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Pb free) G975-105ADJF11U 975-105 -40°C~+85°C SOP-8 (FD) G975-120ADJF11U G975-180ADJF11U 975-120 975-180 -40°C~+85°C -40°C~+85°C SOP-8 (FD) SOP-8 (FD) G975-250ADJF11U 975-250 -40°C~+85°C SOP-8 (FD) Note: F1: SOP-8 (FD) 1: Bonding Code U : Tape & Reel e.g. 105 denotes the 1.05V output voltage Pin Configuration Typical Application Circuit G975 VPP (5V) VPP G975 GND ADJ 2 VO 3 VO 4 Thermal Pad 10kΩ VIN VEN 8 1 POK VEN 7 POK 6 VPP 5 VIN VIN VIN VO VO R1 CPP 1µF C1 20µF GND ADJ C2 20µF R2 Top View SOP-8 (FD) * Thermal Pad can be connected to VIN ** Connect Thermal Pad to ground plate will have better thermal performance 0.8 (R1+R2) Volts R2 R2<120kΩ is recommended VO = TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.1 Apr 27, 2007 1