Features

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Input bias supply pin from 3.0 V to 5.5 V

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Ultra low-dropout voltage (40 mV typ. at 1 A load)

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Low ground current (35 μA typ. at no load)

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Output voltage tolerance: ±1% all over temperature range, ±0.5% at 25 °C

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1 A guaranteed output current

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50 mV output voltage step available from 0.4 V to 1.8 V

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100 mV output voltage step available from 1.9 V to 3.6 V

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Adjustable version from 0.5 V to 3.0 V

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Logic-controlled electronic shutdown

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Internal current limit

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Thermal shutdown

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Output active discharge function

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Available in Flip Chip6 (0.8x1.2 mm) package

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Temperature range: -40 °C to 85 °C

Applications

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Smartphones

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Cameras

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Low voltage, low noise post regulation

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.

www.st.com