STMicroelectronics LDQ44 400mA High Accuracy LDO Voltage Regulator
STMicroelectronics LDQ44 400mA High Accuracy LDO Voltage Regulator is available in a DFN 2x2 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 LDQ44 suitable for low-power battery-operated applications.
An enable logic control function puts the STMicroelectronics LDQ44 into shutdown mode, allowing a total current consumption of less than 0.3μA. Thermal protection is also included.
Features
- AEC-Q100 grade 1 qualified
- -40°C < TJ < 150°C operating temperature range
- Input voltage from 3.3V to 40V
- Dropout voltage (1V typ. at 400mA load)
- Low ground current (2μA typ. at no load)
- ADJ from 1.2V to 12V
- ±2% over temperature, 0.5% at 25°C output voltage tolerance
- 400mA guaranteed output current
- Power Good
- Logic-controlled electronic shutdown
- Internal current limit
- Short-circuit protection
- Thermal shutdown
- Output active discharge function
- Package options
- DFN6 (2x2) WF for automotive grade
- DFN6 (2x2) for industrial grade
Applications
- EV powertrain
- Always-on battery-connected application
- Infotainment and instrument cluster
- ADAS
Additional Resources
Block Diagram
Complete Your Design
STMicroelectronics Standard Products
A broad range of drop-in replacements for general-purpose analog ICs, discretes, and serial EEPROMs.
Published: 2026-08-05
| Updated: 2026-08-05