STMicroelectronics LF33CDT-TR 3.3V Linear Voltage Regulator IC - DPAK Package
- Brand: STMicroelectronics
- Product Code: LF33CDT-TR
- Availability: In Stock
$0.24
- Ex Tax: $0.24
STMicroelectronics LF33CDT-TR: Precision Voltage Regulation in DPAK Packaging
Power supply design demands components that combine reliability with performance, and the LF33CDT-TR from STMicroelectronics delivers exactly that. This fixed 3.3V linear voltage regulator offers 500mA output current capability in a compact DPAK package, making it an ideal choice for modern electronics requiring stable power solutions. Engineered for industrial applications, this active component maintains output voltage precision even under varying load conditions while incorporating essential protection mechanisms.
Key Technical Advantages
Operating from input voltages up to 16V, the LF33CDT-TR maintains a consistent 3.3V output with minimal dropout voltage of just 0.7V at full load. Its quiescent current of 1mA ensures energy efficiency, while the 80dB PSRR (power supply rejection ratio) at 120Hz effectively filters input noise. The device's thermal shutdown and overcurrent protection features prevent damage during fault conditions, with safe operation maintained across industrial temperature ranges (-40°C to 125°C).
| Parameter | Specification |
|---|---|
| Output Voltage | 3.3V Fixed |
| Maximum Output Current | 500mA |
| Input Voltage Range | Up to 16V |
| Dropout Voltage | 0.7V @ 500mA |
Design Flexibility and Integration
Designed for surface mount applications, the TO-252-3 (DPAK) package combines thermal efficiency with space-saving advantages. The component's minimal external component requirement simplifies circuit design while its inherent stability eliminates the need for additional compensation capacitors. This makes the LF33CDT-TR particularly suitable for battery-powered devices, embedded systems, and industrial control equipment where board space and reliability are critical.
As part of STMicroelectronics' comprehensive power management portfolio, this regulator demonstrates exceptional performance across various operating conditions. Its low quiescent current (12mA maximum supply current) contributes to improved system efficiency, while the integrated protection features reduce the need for external safeguard circuits. Engineers benefit from simplified thermal design thanks to the DPAK package's superior heat dissipation characteristics.
| Package Type | TO-252-3 (DPAK) |
|---|---|
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C to 125°C |
| Protection Features | Over Temperature, Over Current |
Whether implementing power conditioning for microcontroller units, sensor interfaces, or industrial instrumentation, the LF33CDT-TR provides a robust voltage regulation solution. Its tape & reel packaging format supports automated assembly processes, while the active product status ensures long-term availability for production environments. When combined with appropriate input/output capacitors, this regulator delivers rock-solid voltage stability for demanding electronic applications.
Tags: Power Management ICs, Surface Mount Regulators, Industrial Voltage Control, High Current Linear Regulators, Thermal Protected Circuits