Overview
The TPS79925DDCT is a 200-mA, low-quiescent current, ultra-low noise, high power supply rejection ratio (PSRR) linear voltage regulator produced by Texas Instruments. This device is designed to provide a stable output voltage with minimal noise and high efficiency, making it suitable for a variety of applications, including wireless handsets and WLAN cards. The TPS79925DDCT features an advanced BiCMOS fabrication process, ensuring low dropout voltage and excellent line and load transient response.
Key Specifications
| Parameter | Value |
|---|---|
| Output Current | 200 mA |
| Output Voltage | Fixed: 2.5 V |
| Input Voltage Range | 2.7 V to 6.5 V |
| Dropout Voltage | Typically 100 mV at 200 mA output |
| Ground Pin Current | Typically 40 μA |
| Shutdown Current | Typically 0.15 μA |
| Operating Temperature Range | –40°C to +125°C |
| Package Type | 5-pin SOT-23-THIN (TSOT-23-5) |
| Line Regulation | 0.02 %/V |
| Load Regulation | 0.002 %/mA |
| Output Voltage Accuracy | ±2% over all load, line, process, and temperature variations |
Key Features
- Low quiescent current: Typically 40 μA ground current.
- Ultra-low noise: High PSRR and low total noise.
- Fast start-up and excellent line and load transient response.
- Inrush current protection when the EN toggle is used.
- Stable with ceramic capacitors.
- Advanced BiCMOS fabrication process.
- Low dropout voltage: Typically 100 mV at 200 mA output.
- Precision voltage reference and feedback loop for high output voltage accuracy.
Applications
The TPS79925DDCT is particularly suited for applications requiring low noise and high efficiency, such as:
- Wireless handsets.
- WLAN cards.
- Other portable electronic devices where power efficiency and low noise are critical.
Q & A
- What is the output current of the TPS79925DDCT?
The output current of the TPS79925DDCT is 200 mA. - What is the typical dropout voltage of the TPS79925DDCT?
The typical dropout voltage is 100 mV at a 200 mA output. - What is the operating temperature range of the TPS79925DDCT?
The operating temperature range is –40°C to +125°C. - What type of package does the TPS79925DDCT come in?
The TPS79925DDCT comes in a 5-pin SOT-23-THIN (TSOT-23-5) package. - What is the input voltage range for the TPS79925DDCT?
The input voltage range is 2.7 V to 6.5 V. - Does the TPS79925DDCT have inrush current protection?
Yes, the TPS79925DDCT features inrush current protection when the EN toggle is used. - What is the typical ground pin current of the TPS79925DDCT?
The typical ground pin current is 40 μA. - Is the TPS79925DDCT stable with ceramic capacitors?
Yes, the TPS79925DDCT is stable with ceramic capacitors. - What is the output voltage accuracy of the TPS79925DDCT?
The output voltage accuracy is ±2% over all load, line, process, and temperature variations. - What are some common applications for the TPS79925DDCT?
Common applications include wireless handsets, WLAN cards, and other portable electronic devices where power efficiency and low noise are critical.
