LD39150PU33R 1.5A Linear Voltage Regulator IC - 3.3V Fixed Output
- Brand: STMicroelectronics
- Product Code: LD39150PU33R
- Availability: In Stock
$0.60
- Ex Tax: $0.60
STMicroelectronics LD39150PU33R: High-Performance Linear Voltage Regulation
In modern electronic systems, stable and efficient power management is critical for reliable operation. The LD39150PU33R from STMicroelectronics (STM) delivers precise 3.3V fixed output voltage with up to 1.5A current capability, making it an ideal choice for demanding industrial, automotive, and consumer applications. This high-performance linear regulator combines low dropout voltage, advanced protection features, and compact packaging to ensure optimal performance in space-constrained designs.
Key Technical Specifications
Engineered for efficiency and reliability, the LD39150PU33R features:
| Parameter | Value |
| Max Input Voltage | 6V |
| Output Voltage | 3.3V Fixed |
| Output Current | 1.5A |
| Dropout Voltage | 0.4V @ 1.5A |
| Quiescent Current | 2.5mA |
This regulator's low dropout voltage enables operation with minimal voltage differential between input and output, reducing power dissipation and improving efficiency. The 2.5mA quiescent current consumption ensures minimal battery drain in portable devices.
The LD39150PU33R incorporates comprehensive protection mechanisms including over-current protection and thermal shutdown to prevent damage under fault conditions. These features make it suitable for applications requiring robust performance in harsh environments with operating temperatures ranging from -40°C to 125°C.
Designed for modern electronics manufacturing, this regulator comes in a 6-VDFN exposed pad package with surface-mount technology (SMT) compatibility. The compact 3x3mm footprint and tape-and-reel packaging facilitate automated assembly processes while saving valuable PCB space.
Performance Benefits
With a power supply rejection ratio (PSRR) of 65dB at 120Hz and 55dB at 1kHz, this voltage regulator effectively suppresses input voltage noise, ensuring clean power delivery to sensitive downstream components. The fixed output configuration eliminates external resistor divider requirements, simplifying design implementation while maintaining accuracy.
The device's thermal management system automatically reduces output current when junction temperatures exceed safe thresholds, preventing thermal runaway while maintaining functionality. This intelligent protection system ensures reliable operation in high-temperature environments without compromising performance.
Application Versatility
The LD39150PU33R's combination of performance characteristics makes it suitable for various applications including:
- Industrial control systems
- Embedded computing platforms
- Consumer electronics devices
- Automotive infotainment systems
- Portable measurement instruments
Its ability to maintain stable 3.3V output across varying load conditions ensures consistent performance in applications ranging from sensor interfaces to digital signal processing circuits. The regulator's high current capability supports power-hungry peripherals while maintaining voltage precision within ±2% tolerance.
Tags: Linear Voltage Regulator, 3.3V Power IC, STMicroelectronics Components, Industrial Electronics, Surface Mount Technology