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LD49300 Datasheet 3A very low-dropout voltage regulator

Manufacturer: STMicroelectronics

General Description

The LD49300 is a high-bandwidth, low-dropout, 3.0A voltage regulator, ideal for powering core voltages of low-power microprocessors.

The LD49300 implements a dual supply configuration allowing for very low output impedance and very fast transient response.

The LD49300 requires a bias input supply and a main input supply, allowing for ultra-low input voltages on the main supply rail.

Overview

www.DataSheet4U.com LD49300 3A Very low drop for low output voltage regulator Feature summary ■ Input voltage range: VI = 1.4V to 5.5V VBIAS = 3V to 6V Stable with ceramic capacitor ±1.5% initial tolerance Maximum dropout voltage (VI - VO) of 400mV over temperature Adjustable output voltage down to 0.8V Ultra fast transient response (up to 10MHz bandwidth) Excellent line and load regulation specifications Logic controlled shutdown option Thermal shutdown and current limit protection Junction temperature range: –25°C to 125°C 5.5V and the bias supply requires between 3V and 6V for proper operation.

The LD49300 offers fixed output voltages from 0.8V to 1.8V and adjustable output voltages down to 0.8V.

The LD49300 requires a minimum output capacitance for stability, and work optimally with small ceramic capacitors.