Overview
The LD39200DPUR is a high-performance, ultra-low dropout (LDO) linear voltage regulator produced by STMicroelectronics. This regulator is part of the LD39200 series and is designed to provide a maximum output current of 2 A with an adjustable output voltage range. It features a high power supply rejection ratio (PSRR) of 70 dB at 1 kHz, making it suitable for applications requiring stable and noise-free power supply.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 1.25 V to 6 V |
| Output Voltage Range | 0.5 V to 5.75 V (adjustable) |
| Maximum Output Current | 2 A |
| Dropout Voltage (typ.) | 130 mV at 2 A load |
| Quiescent Current | 300 µA |
| Output Noise | 45 µV |
| Load Regulation | 0.4% (max) |
| Line Regulation | 0.2% (max) |
| Operating Temperature Range | -40°C to +125°C |
| Package Style | DFN-8 (4x4) |
| Mounting Method | Surface Mount |
Key Features
- Ultra-low dropout voltage of 130 mV (typ.) at 2 A load
- High PSRR of 70 dB at 1 kHz
- Adjustable output voltage from 0.5 V to 5.75 V
- Enable function with shutdown current of 10 nA (typ.)
- Power Good flag for output voltage monitoring
- Reverse current protection and short-circuit constant current limit
- Thermal protection with automatic shutdown and restart
- Stable with ceramic capacitors on the output (10 µF)
Applications
The LD39200DPUR is suitable for various applications requiring stable and high-current power supply, including:
- Telecom infrastructure
- Consumer electronics
- Industrial control systems
- Automotive systems
Q & A
- What is the input voltage range of the LD39200DPUR?
The input voltage range is from 1.25 V to 6 V. - What is the maximum output current of the LD39200DPUR?
The maximum output current is 2 A. - What is the typical dropout voltage of the LD39200DPUR?
The typical dropout voltage is 130 mV at 2 A load. - How is the output voltage adjusted in the LD39200DPUR?
The output voltage can be adjusted from 0.5 V to 5.75 V using a resistor divider between the ADJ pin and the output. - What is the purpose of the Power Good (PG) pin?
The Power Good pin provides a flag indicating whether the output voltage is within the correct range. - Does the LD39200DPUR have thermal protection?
Yes, the device has thermal protection that activates when the junction temperature reaches 170°C and restarts when it falls below 150°C. - What is the quiescent current of the LD39200DPUR?
The quiescent current is 300 µA. - What type of package does the LD39200DPUR come in?
The device comes in a DFN-8 (4x4) package. - What is the operating temperature range of the LD39200DPUR?
The operating temperature range is from -40°C to +125°C. - Does the LD39200DPUR have reverse current protection?
Yes, the device includes reverse current protection to prevent current from flowing from the output to the input.
