Overview
The TPS79533DCQG4 is a high-performance, low-dropout (LDO) voltage regulator produced by Texas Instruments. This product is designed to deliver a stable and precise 3.3V output voltage, making it ideal for applications requiring reliable power management. The TPS79533DCQG4 is part of Texas Instruments' TPS795xx family, known for its ultra-low noise, high PSRR (Power Supply Rejection Ratio), and fast transient response. It is widely used in portable electronics, industrial systems, and communication devices, offering exceptional performance for power-sensitive applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Voltage | 3.3 | V | Fixed |
| Output Current | 500 | mA | Maximum |
| Dropout Voltage | 110 | mV | at 500 mA |
| Input Voltage Range | 2.7 to 5.5 | V | |
| PSRR | 75 | dB | at 1 kHz |
| Noise | 30 | µVrms | 10 Hz to 100 kHz |
| Operating Temperature Range | -40 to +125 | °C | |
| Package | DCQ (SOT-223) | 4-pin | |
| Quiescent Current | 85 | µA | Typical |
| Enable Pin | Yes | Active high |
Key Features
- Ultra-Low Noise: Ensures clean power delivery for noise-sensitive applications.
- High PSRR: Minimizes output voltage fluctuations caused by input voltage variations.
- Fast Transient Response: Quickly adapts to sudden load changes, maintaining stable output.
- Low Dropout Voltage: Operates efficiently even with small input-output differentials.
- Enable Pin: Allows for power management control, reducing standby power consumption.
Applications
The TPS79533DCQG4 is widely used in various industries due to its robust performance and reliability. Key application areas include:
- Portable Electronics: Powering devices such as smartphones, tablets, and portable medical equipment.
- Industrial Systems: Providing stable voltage for sensors, actuators, and control systems.
- Communication Devices: Ensuring reliable power for RF modules, transceivers, and networking equipment.
- Automotive Electronics: Supporting infotainment systems, ADAS, and other automotive applications.
Q & A
1. What is the output voltage of the TPS79533DCQG4?
The TPS79533DCQG4 provides a fixed output voltage of 3.3V.
2. What is the maximum output current?
The maximum output current is 500 mA.
3. What is the dropout voltage at full load?
The dropout voltage is 110 mV at 500 mA.
4. What is the input voltage range?
The input voltage range is 2.7V to 5.5V.
5. How does the enable pin function?
The enable pin (active high) allows the user to turn the regulator on or off, reducing standby power consumption.
6. What is the PSRR of this LDO?
The Power Supply Rejection Ratio (PSRR) is 75 dB at 1 kHz.
7. What is the noise level of the TPS79533DCQG4?
The noise level is 30 µVrms from 10 Hz to 100 kHz.
8. What is the operating temperature range?
The operating temperature range is -40°C to +125°C.
9. What package does this LDO come in?
The TPS79533DCQG4 is available in a 4-pin SOT-223 (DCQ) package.
10. Is this LDO suitable for automotive applications?
Yes, the TPS79533DCQG4 is suitable for automotive applications, provided it meets the specific requirements of the application.
