Overview
The TPS78633DCQRG4 is a high-performance, ultralow-noise, and high power-supply rejection ratio (PSRR) linear voltage regulator produced by Texas Instruments. This device is part of the TPS786 family and is designed to provide a stable 3.3V output with a maximum current of 1.5A. It is particularly suited for applications requiring low noise and fast start-up times, such as RF electronics, audio systems, and other noise-sensitive analog components.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Regulator Topology | Positive Fixed |
| Current - Limit (Min) | 2.4A |
| Voltage - Input (Max) | Up to 5.5V |
| Voltage - Dropout (Typical) | 0.34V @ 1.5A |
| Voltage - Output (Fixed) | 3.3V |
| Current - Output (Max) | 1.5A |
| Operating Temperature Range | -40°C ~ 125°C |
| Package / Case | SOT-223-6 |
| Number of Regulators | 1 |
| Quiescent Current (Iq) | 0.26 mA |
| Noise | 48 uVrms |
| PSRR @ 100KHz | 32 dB |
| Special Features | Enable, Soft Start |
| Protection Features | Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO) |
| RoHS Status | Compliant |
Key Features
- Ultralow Noise: The TPS78633DCQRG4 features an output noise of 48 uVrms, making it suitable for noise-sensitive applications.
- High PSRR: High power-supply rejection ratio (PSRR) of up to 59 dB at 100 Hz and 32 dB at 100 kHz.
- Fast Start-Up Time: Approximately 50 μs start-up time with a 0.001-μF bypass capacitor.
- Low Dropout Voltage: Typical dropout voltage of 0.34V at 1.5A.
- Stable with Small Capacitor: Stable operation with a small 1-μF ceramic capacitor on the output.
- Enable and Soft Start Features: Includes enable and soft start features for controlled power-up.
- Protection Features: Over current, over temperature, reverse polarity, and under voltage lockout (UVLO) protection.
Applications
- RF Electronics: Suitable for RF applications such as VCOs, receivers, and ADCs due to its high PSRR and low noise.
- Audio Systems: Ideal for audio applications requiring low noise and high stability.
- Bluetooth and Wireless LAN: Used in Bluetooth, Wireless LAN, and other wireless communication devices.
- Cellular and Cordless Telephones: Applicable in cellular and cordless telephone systems.
- Handheld Devices: Suitable for handheld organizers, PDAs, and other portable devices.
Q & A
- What is the output voltage of the TPS78633DCQRG4?
The output voltage is fixed at 3.3V.
- What is the maximum input voltage for the TPS78633DCQRG4?
The maximum input voltage is 5.5V.
- What is the typical dropout voltage of the TPS78633DCQRG4?
The typical dropout voltage is 0.34V at 1.5A.
- What is the quiescent current of the TPS78633DCQRG4?
The quiescent current is 0.26 mA.
- Is the TPS78633DCQRG4 RoHS compliant?
- What are the protection features of the TPS78633DCQRG4?
The device includes over current, over temperature, reverse polarity, and under voltage lockout (UVLO) protection.
- What is the operating temperature range of the TPS78633DCQRG4?
The operating temperature range is -40°C to 125°C.
- What is the package type of the TPS78633DCQRG4?
The package type is SOT-223-6.
- What are the special features of the TPS78633DCQRG4?
The device features an enable pin and soft start capability.
- What is the typical noise level of the TPS78633DCQRG4?
The typical noise level is 48 uVrms.
