LD57100
Datasheet
1 A ultra low-dropout LDO with bias
Features
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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
Thermal shutdown
Output active discharge function
Available in Flip Chip6 (0.8x1.2 mm) package
Temperature range: -40 °C to 85 °C
Applications
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Smartphones
Product status link
Cameras
LD57100
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.
DS13123 - Rev 5 - April 2021
For further information contact your local STMicroelectronics sales office.
www.st.com