Overview
The TPS79633DCQG4 is a high-performance, ultralow-noise, high power-supply rejection ratio (PSRR) linear voltage regulator from Texas Instruments. This regulator is part of the TPS796 series, known for its fast response and low dropout voltage, making it suitable for a variety of applications requiring stable and clean power supply.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VIN Input voltage | 2.7 | 5.5 | V | ||
| VFB Internal reference (TPS79601) | 1.200 | 1.225 | 1.250 | V | |
| IOUT Continuous output current | 0 | 1 | A | ||
| Output voltage range | 0 μA ≤ IOUT ≤ 1 A, VOUT(nom) + 1 V ≤ VIN ≤ 5.5 V | 1.225 | 5.5 | V | |
| Output voltage accuracy | VOUT < 5 V | -2.0% | +2.0% | % | |
| Output voltage line regulation | VOUT + 1 V ≤ VIN ≤ 5.5 V | 0.05 | 0.12 | %/V | |
| Load regulation | 0 μA ≤ IOUT ≤ 1 A | 5 | mV | ||
| Dropout voltage | IOUT = 1 A, VIN = VOUT(nom) - 0.1 V | 220 | 325 | mV | |
| Power-supply rejection ratio (PSRR) | f = 100 kHz, IOUT = 1 A | 42 | dB | ||
| Output noise voltage | IOUT = 1 A, CNR = 0.01 μF | 41 | μVRMS | ||
| Start-up time | COUT = 1 μF, CNR = 0.0047 μF | 75 | μs |
Key Features
- Ultralow Noise: The TPS79633DCQG4 features ultralow noise, making it ideal for applications requiring high signal integrity.
- High PSRR: High power-supply rejection ratio ensures that the output voltage remains stable despite variations in the input voltage.
- Fast Response: The regulator has a fast response time, which is crucial for applications that require quick recovery from transient conditions.
- Low Dropout Voltage: With a typical dropout voltage of 350 mV, this regulator can operate efficiently even when the input voltage is close to the output voltage.
- Fixed and Adjustable Outputs: Available in both fixed and adjustable output voltage configurations, offering flexibility in design.
- Enable Pin: Features an enable pin for easy control of the regulator's operation.
- Thermal Shutdown: Includes thermal shutdown protection to prevent overheating.
Applications
The TPS79633DCQG4 is suitable for a wide range of applications, including:
- RF and Wireless Systems: Due to its ultralow noise and high PSRR, it is ideal for RF and wireless systems where signal integrity is critical.
- Audio and Video Equipment: The low noise and high accuracy make it suitable for audio and video equipment where clean power supply is essential.
- Medical Devices: Its stability and low dropout voltage make it a good choice for medical devices that require reliable power supply.
- Industrial Control Systems: The fast response and high PSRR make it suitable for industrial control systems that need stable power supply under varying conditions.
Q & A
- What is the input voltage range of the TPS79633DCQG4?
The input voltage range is from 2.7 V to 5.5 V. - What is the maximum continuous output current of the TPS79633DCQG4?
The maximum continuous output current is 1 A. - What is the typical dropout voltage of the TPS79633DCQG4?
The typical dropout voltage is 350 mV. - What is the power-supply rejection ratio (PSRR) of the TPS79633DCQG4 at 100 kHz?
The PSRR at 100 kHz is typically 42 dB. - Does the TPS79633DCQG4 have an enable pin?
Yes, it features an enable pin for controlling the regulator's operation. - What is the typical output noise voltage of the TPS79633DCQG4?
The typical output noise voltage is 41 μVRMS with CNR = 0.01 μF. - What is the start-up time of the TPS79633DCQG4?
The start-up time is typically 75 μs with COUT = 1 μF and CNR = 0.0047 μF. - Is the TPS79633DCQG4 available in fixed and adjustable output voltage configurations?
Yes, it is available in both fixed and adjustable output voltage configurations. - What is the package type of the TPS79633DCQG4?
The package type is SOT-223-6. - Does the TPS79633DCQG4 have thermal shutdown protection?
Yes, it includes thermal shutdown protection to prevent overheating.
