Overview
The TPS76333DBVR is a low-power, 150-mA, low-dropout linear voltage regulator produced by Texas Instruments. This regulator is part of the TPS763xx family, which offers low-dropout voltage, low-power operation, and miniaturized packaging. It is ideal for cost-sensitive designs and applications where board space is limited. The TPS76333DBVR features a PMOS pass element, which reduces dropout voltage and quiescent current, making it suitable for portable systems such as laptops and cellular phones to extend battery life.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | 150 | mA |
| Dropout Voltage | Typically 300 mV at 150 mA | mV |
| Quiescent Current | 140 µA (maximum) | µA |
| Operating Junction Temperature | –40 to 125 | °C |
| Package | 5-pin SOT-23 (DBV) | |
| Input Voltage Range | –0.3 to 10 | V |
| Output Voltage | 3.3 V (fixed) | V |
| Enable Input Voltage | –0.3 to VI + 0.3 | V |
| Peak Output Current | Internally limited | |
| Thermal Protection | Shuts off at TJ > 165°C, recovers at TJ < 140°C |
Key Features
- Low dropout voltage: Typically 300 mV at 150 mA of load current.
- Low quiescent current: 140 µA maximum.
- Logic-enabled sleep mode: Reduces quiescent current to less than 2 µA in shutdown mode.
- Internal current limiting and thermal protection.
- Miniaturized 5-pin SOT-23 package.
- PMOS pass element for low-value resistance and stable quiescent current over the entire load range.
- Back diode for safe reverse current conduction.
Applications
- Electricity meters.
- Solar inverters.
- HVAC systems.
- Servo drives and motion control.
- Sensor transmitters.
- Portable systems such as laptops and cellular phones.
Q & A
- What is the typical dropout voltage of the TPS76333DBVR? The typical dropout voltage is 300 mV at 150 mA of load current.
- What is the quiescent current of the TPS76333DBVR? The quiescent current is 140 µA maximum.
- What is the operating junction temperature range of the TPS76333DBVR? The operating junction temperature range is –40°C to 125°C.
- What package type is the TPS76333DBVR available in? The TPS76333DBVR is available in a 5-pin SOT-23 (DBV) package.
- How does the thermal protection work in the TPS76333DBVR? The thermal protection shuts off the regulator if the junction temperature rises above 165°C and recovers automatically when the junction temperature drops below 140°C.
- What is the purpose of the enable input (EN) in the TPS76333DBVR? The enable input (EN) allows the regulator to be shut down, reducing the quiescent current to less than 2 µA.
- What are some common applications of the TPS76333DBVR? Common applications include electricity meters, solar inverters, HVAC systems, servo drives and motion control, sensor transmitters, and portable systems like laptops and cellular phones.
- How does the PMOS pass element benefit the TPS76333DBVR? The PMOS pass element acts as a low-value resistor, reducing dropout voltage and maintaining stable quiescent current over the entire load range.
- What is the peak output current limitation of the TPS76333DBVR? The peak output current is internally limited.
- Does the TPS76333DBVR have reverse current protection? Yes, the PMOS pass element includes a back diode that safely conducts reverse current when the input voltage level drops below the output voltage level.
