G9661 Global Mixed-mode Technology Peak 3A, Low Dropout Regulator with Enable Features General Description The G9661 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 a VIN as low as 1.4V and VPP voltage 5V with output voltage programmable as low as 0.8V. The G9661 features ultra low dropout, ideal for applications where VOUT is very close to VIN. Additionally, the G9661 has an enable pin to further reduce power dissipation while shutdown. The G9661 provides excellent regulation over variations in line, load and temperature. The G9661 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 300mV Dropout @ 2A, VO 2.5V Over Current and Over Temperature Protection Enable Pin Low Reverse Leakage (Output to Input ) TSOT-23-6, SOP-8(FD), MSOP-10(FD) and TDFN3X3-10 Packages ±1.5% ADJ Voltage VO Power OK Signal 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 G9661 is available in the power TSOT-23-6, SOP-8(FD), MSOP-10(FD) and TDFN3X3-10 package. It is available with 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 TEMP. RANGE MARKING PACKAGE (Green) G9661-25ADJTP1U 961Ax -40°C~+85°C TSOT-23-6 G9661-25ADJF11U 9661-25 -40°C~+85°C SOP-8 (FD) G9661-25ADJF61U G9661-25ADJRE1U 9661-25 9661A -40°C~+85°C -40°C~+85°C MSOP-10 (FD) TDFN3X3-10 Note:TP: TSOT-23-6 F1: SOP-8 (FD) F6: MSOP-10 (FD) 1:Bonding Code U : Tape & Reel e.g. 25 denotes the 2.5V output voltage RE: TDFN3X3-10 Pin Configuration Typical Application Circuit G9661 G9661 VO GND VIN 6 ADJ 1 2 POK 1 8 GND VEN 2 7 ADJ VIN 3 6 VO VPP 4 5 NC Thermal Pad* 5 VPP 4 VEN 3 G9661 1 10 GND NC 1 VEN 2 9 ADJ VO 2 8 VO VO 3 7 VO ADJ 4 6 NC POK 5 3 4 VPP 5 Thermal Pad* MSOP-10 (FD) VPP VIN VIN VO VO R1 CPP 1µF 10 VPP Thermal Pad* (GND) 9 C1 10µF 8 VIN VIN 6 VEN 10KΩ VIN GND ADJ C2 10µF R2 NC 7 POK VEN G9661 POK NC VPP (5V) SOP-8 (FD) TSOT-23-6 VIN G9661 0.8 (R1+R2) Volts R2 R2<120kΩ is recommended VO = TDFN3X3-10 * Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.93 Sep 10, 2013 1