G964 Global Mixed-mode Technology Inc. 1A Low Dropout Regulator with Enable Features General Description The G964 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 1 amps. It operates with a VIN as low as 1.4V and VPP voltage 5V with output voltage programmable as low as 0.8V. The G964 features ultra low dropout, ideal for applications where VOUT is very close to VIN. Additionally, the G964 has an enable pin to further reduce power dissipation while shutdown. The G964 provides excellent regulation over variations in line, load and temperature. The G964 provides a power OK signal to indicate if the voltage level of VO reaches 92% of its rating value. Adjustable Output Low to 0.8V Input Voltage as Low as 1.4V and VPP Voltage 5V 150mV Dropout @ 1A, VO 1.2V Over Current and Over Temperature Protection Enable Pin Low Reverse Leakage (Output to Input ) VO Stable with Ceramic Capacitor ±2% Output Voltage VO Power OK Signal 1.2V, 1.5V, 1.8V and 2.5V Options by Setting ADJ Pin Below 0.2V and Adjustable Externally Using Resistors VO Pull Low Resistance when Disable SOP-8 Packages The G964 is available in the power SOP-8 package. It is available with 1.2V, 1.5V, 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) G964-12ADJP11U G964-15ADJP11U G964-12 G964-15 -40°C~+85°C -40°C~+85°C SOP-8 SOP-8 G964-18ADJP11U G964-25ADJP11U G964-18 G964-25 -40°C~+85°C -40°C~+85°C SOP-8 SOP-8 Note: P1: SOP-8 1: Bonding Code U : Tape & Reel e.g. 18 denotes the 1.8V output voltage Pin Configuration Typical Application Circuit G964 10kΩ VPP (5V) VPP G964 POK VIN VEN 8 1 POK GND VEN 2 7 ADJ VIN 3 6 VO VPP 4 5 NC VIN VIN VO VO R1 CPP 1µF C1 10µF GND ADJ C2 10µF R2 SOP-8 0.8 (R1+R2) Volts R2 R2<120kΩ is recommended VO = TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.1 Jul 26, 2006 1