RC1117S285T Integrated Circuits (ICs)

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The RC1117S285T is a low-dropout (LDO) three-terminal linear voltage regulator integrated circuit – more commonly referred to as a PMIC (power management IC) – designed to provide extremely precise and precise voltage regulation independent of loading and line conditions. This device is designed to operate between an input voltage of 3.3V which is typically provided from a main power supply or other source and an output voltage of 2.85V.This device features fast start-up time and low quiescent current, making it ideal for powering analog circuits, especially in battery-operated devices where power consumption is critical. The exceedingly low noise and precise regulation results in smooth and stable power delivery, making it suitable for powering sensitive analog circuits such as ADCs, DACs and radio frequency (RF) circuits.

The RC1117S285T utilizes a dedicated feedback terminal to measure the output voltage and an internal reference voltage setting the precise regulation point. This feedback action helps maintain a steady output voltage over a wide range of potential loads, even in scenarios where the input voltage falls below the required regulated output voltage. The device can handle a maximum output current of up to 250mA and a minimum load current of 15mA.

The low on-resistance of the internal MOSFETs, which are used to amplify the small feedback signal, keeps power dissipation of the device low, allowing it to operate comfortably in any environment. Additionally, the high PSRR (power supply rejection ratio) and low output noise, both of which are accomplished through the unique power rail design, ensures that the output voltage remains stable and accurate under varying line voltage, load current and temperature conditions.

The RC1117S285T is packaged in an SO-8 package and is rated for operation up to 70°C. It features a thermal protection circuit, short-circuit protection, over-temperature protection and reverse current protection.

The RC1117S285T is suitable for powering analog and RF circuits in mobile phones, digital cameras, portable gaming consoles, tablets, PDAs, and many other devices. Its wide input voltage range, low dropout voltage, high PSRR, low output noise and low quiescent current make it ideal for a variety of applications that require regulated and precise power supply.

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