Overview
The TPS76333DBVT is a low-dropout (LDO) linear voltage regulator produced by Texas Instruments. This device is part of the TPS763xx family, which is designed to offer low-dropout voltage, low-power operation, and miniaturized packaging. The TPS76333DBVT is ideal for cost-sensitive designs and applications where board space is limited. It features a PMOS pass element, which significantly reduces dropout voltage and quiescent current compared to conventional PNP pass element LDO regulators. This makes it particularly suitable for battery-operated equipment and other portable systems, such as laptops and cellular phones, by extending battery life.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Output Current | Maximum output current | 150 mA |
| Dropout Voltage | Typical dropout voltage at 150 mA | 300 mV |
| Quiescent Current | Maximum quiescent current | 140 µA |
| Enable Current | Quiescent current in shutdown mode | < 2 µA |
| Operating Temperature | Operating junction temperature range | -40°C to 125°C |
| Package | Package type and size | 5-pin SOT-23 (DBV), 2.90 mm × 1.60 mm |
| Output Voltage | Fixed output voltage for TPS76333DBVT | 3.3 V |
| PSRR | Power Supply Rejection Ratio at 1 kHz | 60 dB |
| Thermal Protection | Junction temperature for thermal shutdown | 165°C |
Key Features
- Low Dropout Voltage: Typically 300 mV at 150 mA of load current, enhancing efficiency in power supply systems.
- Low Quiescent Current: Maximum of 140 µA, reducing power consumption and extending battery life in portable devices.
- Enable Functionality: Logic-enabled sleep mode to shut down the regulator, reducing quiescent current to less than 2 µA.
- Thermal and Overcurrent Protection: Internal current limiting and thermal protection to prevent device damage.
- Miniaturized Packaging: 5-pin SOT-23 package, ideal for space-constrained designs.
- Wide Operating Temperature Range: -40°C to 125°C, making it suitable for various environmental conditions.
Applications
- Battery-Operated Equipment: Laptops, cellular phones, and other portable systems where low power consumption is crucial.
- Electricity Meters: For precise voltage regulation in metering applications.
- Solar Inverters: To ensure stable voltage output in solar power systems.
- HVAC Systems: For reliable voltage regulation in heating, ventilation, and air conditioning systems.
- Servo Drives and Motion Control: To provide stable voltage for precise control in motion control systems.
- Sensor Transmitters: For accurate voltage supply in sensor-based applications.
Q & A
- What is the maximum output current of the TPS76333DBVT?
The maximum output current is 150 mA.
- What is the typical dropout voltage at 150 mA?
The typical dropout voltage is 300 mV.
- What is the maximum quiescent current of the TPS76333DBVT?
The maximum quiescent current is 140 µA.
- How does the enable function work on the TPS76333DBVT?
The enable function is an active-high digital control that shuts down the regulator when the enable voltage is below the falling threshold, reducing quiescent current to less than 2 µA.
- What is the operating junction temperature range of the TPS76333DBVT?
The operating junction temperature range is -40°C to 125°C.
- What type of package does the TPS76333DBVT come in?
The device comes in a 5-pin SOT-23 (DBV) package.
- What is the fixed output voltage of the TPS76333DBVT?
The fixed output voltage is 3.3 V.
- What is the Power Supply Rejection Ratio (PSRR) at 1 kHz?
The PSRR at 1 kHz is 60 dB.
- Does the TPS76333DBVT have thermal protection?
Yes, it features internal thermal protection that shuts down the regulator if the junction temperature exceeds 165°C.
- What are some common applications of the TPS76333DBVT?
Common applications include battery-operated equipment, electricity meters, solar inverters, HVAC systems, servo drives, and sensor transmitters.
