Description
The LD57100 is a high accuracy voltage regulator, which provides 1 A of current. It is equipped with an NMOS pass transistor, whose gate is biased by a dedicated pin, thus allowing the ultra-low drop performance even at very low input voltages. It is available in Flip Chip6 (0.8x1.2 mm), maximizing the space saving. This device is stabilized with a small ceramic capacitor on the output. The ultra low drop, low quiescent current and short-circuit protection make the LD57100 suitable for low power battery-operated applications. An enable logic control function puts the LD57100 in shutdown mode allowing a total current consumption lower than 0.1 µA. Thermal protection is also included. Product status link LD57100 1 A ultra low-dropout LDO with bias LD57100 Datasheet DS13123 - Rev 5 - April 2021 For further information contact your local STMicroelectronics sales office.

Features
■ Input voltage from VOUT to 5.5 V
■ Input bias supply pin from 3.0 V to 5.5 V
■ Ultra low-dropout voltage (40 mV typ. at 1 A load)
■ Low ground current (35 μA typ. at no load)
■ Output voltage tolerance: ±1% all over temperature range, ±0.5% at 25 °C
■ 1 A guaranteed output current
■ 50 mV output voltage step available from 0.4 V to 1.8 V
■ 100 mV output voltage step available from 1.9 V to 3.6 V
■ Adjustable version from 0.5 V to 3.0 V
■ Logic-controlled electronic shutdown
■ Internal current limit

Applications
■ Smartphones
■ Cameras
■ Low voltage, low noise post regulation