Overview
The TPS76350DBVT is a low-power, 150-mA, low-dropout linear regulator from Texas Instruments. This device is part of the TPS763xx family, which offers the benefits of low-dropout voltage, low-power operation, and miniaturized packaging. The TPS76350DBVT is ideal for cost-sensitive designs and applications where board space is limited. It features a PMOS pass element that reduces dropout voltage and supply current compared to conventional PNP pass element LDO designs. This regulator is suitable for portable systems such as laptops and cellular phones, significantly increasing system battery operating life due to its low-dropout voltage and low-power operation.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage | VI = 3.25 V, IO = 1 mA to 150 mA, TJ = 25°C | 1.56 | 1.6 | 1.64 | V |
| Dropout Voltage | IO = 150 mA, TJ = 25°C | 180 | 225 | 300 | mV |
| Quiescent Current | EN = IN, IO = 0 mA, TJ = 25°C | - | 140 | - | µA |
| Operating Junction Temperature | - | -40 | - | 125 | °C |
| Package | - | - | - | 5-pin SOT-23 (DBV) | - |
Key Features
- 150-mA, low-dropout regulator
- Output voltage options: 1.6 V, 1.8 V, 2.5 V, 2.7 V, 2.8 V, 3 V, 3.3 V, 3.8 V, 5 V, and variable (programmable over the range of 1.5 V to 6.5 V)
- Typically 300 mV dropout voltage at 150 mA
- Thermal protection and overcurrent limitation
- Less than 2-µA quiescent current in shutdown mode
- Logic-enabled sleep mode to shut down the regulator
- Miniaturized 5-pin SOT-23 package
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 TPS76350DBVT at 150 mA?
The typical dropout voltage is 300 mV at 150 mA.
- What are the available output voltage options for the TPS763xx family?
The output voltage options include 1.6 V, 1.8 V, 2.5 V, 2.7 V, 2.8 V, 3 V, 3.3 V, 3.8 V, 5 V, and a variable option programmable over the range of 1.5 V to 6.5 V.
- What is the quiescent current in shutdown mode?
The quiescent current in shutdown mode is less than 2 µA.
- What type of protection does the TPS76350DBVT have?
The device features thermal protection and overcurrent limitation.
- What is the operating junction temperature range of the TPS76350DBVT?
The operating junction temperature range is -40°C to 125°C.
- What is the package type of the TPS76350DBVT?
The package type is a 5-pin SOT-23 (DBV).
- How does the enable input (EN) function?
A logic high on the enable input (EN) enables the regulator, while a logic low disables it and reduces the supply current to less than 2 µA.
- What happens when the junction temperature exceeds 165°C?
When the junction temperature exceeds 165°C, the thermal protection circuitry shuts down the device. Operation resumes automatically when the junction temperature drops below 140°C.
- What is the current limiting behavior of the TPS76350DBVT?
The device limits output current to approximately 800 mA. When current limiting engages, the output voltage scales back linearly until the overcurrent condition ends.
- What are some typical applications of the TPS76350DBVT?
Typical applications include electricity meters, solar inverters, HVAC systems, servo drives and motion control, sensor transmitters, and portable systems like laptops and cellular phones.
