STMicroelectronics LDQ40 250mA Low-Dropout (LDO) Voltage Regulator

STMicroelectronics LDQ40 250mA Low-Dropout (LDO) Voltage Regulator is a high-accuracy voltage regulator that provides 250mA of current. It is available in a SOT23 5L, DFN 2×2 6L package to maximize space saving. The device is stabilized with a small ceramic capacitor on the output. The low drop, low quiescent current, and short-circuit protection make the LDQ40 suitable for low-power battery-operated applications.

An enable logic control function puts the STMicroelectronics LDQ40 in shutdown mode, allowing a total current consumption lower than 0.3µA. Thermal protection is also included.

Features

AEC-Q100 grade 1 qualified
- Operating temperature range of -40°C < T_J < 150°C
Input voltage from 3.3V to 40V
Dropout voltage (500mV typ. at 250mA load)
Low ground current (2μA typ. at no load)
Output voltage of 1.8V, 2.5V, 3.3V, and 5.0V and ADJ from 1.2V to 12V
Output voltage tolerance of ±1.5% overtemperature, ±0.5% at 25°C
250mA guaranteed output current

Power Good for fixed versions
Logic-controlled electronic shutdown
Internal current limit
Short-circuit protection
Thermal shutdown
Output active discharge function
Package options
- SOT23-5L, DFN 2×2 6L for industrial applications
- DFN 2mm x 2mm 6L wettable flanks for automotive grade

Applications

EV power train
Always-on battery-connected application

Infotainment and instrument clusters
ADAS

Block Diagrams

Block Diagram - STMicroelectronics LDQ40 250mA Low-Dropout (LDO) Voltage Regulator

STMicroelectronics LDQ40 250mA Low-Dropout (LDO) Voltage Regulator

Features

Applications

Block Diagrams

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