Overview
The STMicroelectronics LD39200PU33R is a high-performance, low-dropout linear voltage regulator designed to provide a stable output voltage of 3.3V with a maximum output current of 2A. This regulator is part of the LD39200 series and is packaged in a DFN-6 (3 x 3 mm) surface mount package. It is characterized by its ultra-low dropout voltage, high power supply rejection ratio (PSRR), and robust protection features, making it suitable for a variety of applications, including telecom infrastructure and consumer electronics.
Key Specifications
| Attribute | Value |
|---|---|
| Input Voltage Range | 1.25 V to 6.0 V |
| Output Voltage | 3.3 V |
| Output Current | 2 A |
| Dropout Voltage (Max) | 250 mV |
| Quiescent Current | 300 µA |
| Operating Temperature Range | -40°C to +125°C |
| Output Noise | 40 µV |
| Load Regulation | 0.4% |
| Line Regulation | 0.1% |
| Package Style | DFN-6 |
| Mounting Method | Surface Mount |
| Output Tolerance | ±1% |
Key Features
- Ultra-low dropout voltage: 130 mV (typ.) at 2 A load
- High PSRR: 70 dB at 1 kHz
- Enable logic control function with shutdown mode reducing current consumption to 10 nA (typ.)
- Power Good flag available on a dedicated pin
- Reverse current protection, short-circuit constant current limit, and thermal protection
- Stable with ceramic capacitors on the output (10 µF)
- Operating junction temperature range: -40°C to 125°C
Applications
The LD39200PU33R is typically used in various applications such as:
- Telecom infrastructure
- Consumer electronics
- Communications equipment
- Computers and peripherals
- Industrial and personal electronics
Q & A
- What is the maximum output current of the LD39200PU33R?
The maximum output current is 2 A. - What is the input voltage range for the LD39200PU33R?
The input voltage range is from 1.25 V to 6.0 V. - What is the typical dropout voltage of the LD39200PU33R?
The typical dropout voltage is 130 mV at 2 A load. - Does the LD39200PU33R have thermal protection?
Yes, it includes thermal protection that activates when the junction temperature reaches 170°C. - What is the purpose of the Power Good pin?
The Power Good pin indicates whether the output voltage is within the correct range. - How does the enable function work on the LD39200PU33R?
The enable function puts the device in shutdown mode when the EN voltage is lower than 0.5 V, reducing the total current consumption to 10 nA (typ.). - What type of capacitors are recommended for output stability?
Ceramic capacitors (10 µF) are recommended for output stability. - What is the operating temperature range of the LD39200PU33R?
The operating temperature range is -40°C to +125°C. - Does the LD39200PU33R have reverse current protection?
Yes, it includes reverse current protection to prevent current from flowing from the output to the input. - What is the package style and mounting method of the LD39200PU33R?
The package style is DFN-6, and the mounting method is surface mount.
