RT9018A-18GSP 300mA Mini LDO 1.8V Fixed Output Ultra-Low 55μV RMS Noise High 70dB PSRR 1.2V to 5.5V Input Fast Start-Up Tiny SOT-23-5 Package Ideal for Portable/RF Applications

RT9018A-18GSP 300mA Mini LDO 1.8V Fixed Output Ultra-Low 55μV RMS Noise High 70dB PSRR 1.2V to 5.5V Input Fast Start-Up Tiny SOT-23-5 Package Ideal for Portable/RF Applications

Features

Maximum 3A Low-Dropout Voltage Regulator

High Accuracy Output Voltage ±1.5%

Typically 220mV Dropout at 3A

Power Good Output

Output Voltage Pull Low Resistance when Disable

Thermal and Over Current Protection

RoHS Compliant and 100% Lead (Pb)-Free

Applications

Front Side Bus VTT (1.2V/3A)

NoteBook PC Applications

Motherboard Applications

Description The RT9018A/B 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. The significant feature includes ultra low dropout, ideal for applications where VOUT is very close to VIN. Additionally, there is an enable pin to further reduce power dissipation while shutdown. The RT9018A/B provides excellent regulation over variations in line, load and temperature. and provides a power OK signal to indicate if the voltage level of Vo reaches 90% of its rating value.

The RT9018A/B is available in the 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.

INFORMATION

Drawing

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