General Description

The RT9185 series are efficient, precise triple-channel CMOS LDO regulators specifically designed for motherboard application. The device is intended to powering the standby voltage in which 3.3V_PCI, 2.5V_Clock and 1.8V_ICH2 or 1.5V_ICH4 core voltage of the PC based computer system. Moreover, it is also optimized for CD/DVD-ROM, CD/RW, XDSL Router or IA equipments applications. The regulator outputs are capable of sourcing 1.5A, 0.8A and 0.3A of output current respectively.

Features

● Fixed Output Voltages : 3.35V at 1.5A, 2.55V at 0.8A and 1.5V or 1.8V at 0.3A

● Low Quiescent Current (Typically 0.4mA)

● Operating Voltage Ranges : 3.5V to 5.5V

● Ultra-Fast Transient Response

● Tight Load and Line Regulation

● Current Limiting Protection

● Thermal Shutdown Protection

● Only Low-ESR Ceramic Capacitors Required for Stability

● Custom Voltage Available

● RoHS Compliant and 100 Lead (Pb)-Free

Applications

● Mother-board Power Supply

● CD/DVD-ROM, CD/RW

● XDSL Router

● IA Equipments

● Cable Modems