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General Description

The RT9018C 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 3A

(Peak). It operates with a VIN as low as 1.4V and VDD

voltage 3V with output voltage programmable as low as

0.8V. A significant feature includes ultra low dropout, which

is ideal for applications where VOUT is very close to VIN.

Additionally, there is an enable pin to further reduce power

dissipation while shutdown. The RT9018C provides

excellent regulation over variations in line, load and

temperature. It also provides a power good signal to

indicate whether the voltage level of VOUT has reached

90% of its rating value.

The RT9018C is available in SOP-8 (Exposed Pad) and

WDFN-10L 3x3 packages with 1V, 1.05V, 1.2V, 1.5V, 1.8V

and 2.5V internally preset outputs that are also adjustable

using external resistors.

Features

? Maximum 3A Low Dropout Voltage Regulator

? High Accuracy Output Voltage ±1.5%

? Typically 210mV Dropout at 3A

? Power Good Output

? Output Voltage Pull Low Resistance when Disable

? Thermal and Over Current Protection

? RoHS Compliant and Halogen Free

Applications

? Front Side Bus VTT (1.2V/3A)

? NoteBook PC Applications

? Motherboard Applications