Overview
The TPS70930DBVR, part of the TPS709 series from Texas Instruments, is an ultra-low quiescent current, low-dropout (LDO) linear voltage regulator. This device is designed for power-sensitive applications, particularly in battery-powered systems that require minimal idle-state power dissipation. The TPS70930DBVR offers a fixed output voltage of 3.0 V and supports a peak output current of up to 200 mA. It features a precision band-gap and error amplifier, ensuring 2% accuracy over temperature. The regulator includes thermal shutdown, overcurrent protection, and reverse current protection for enhanced reliability and safety.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 to 30 | V |
| Output Voltage | 3.0 | V |
| Output Current (Continuous) | 150 | mA |
| Output Current (Peak) | 200 | mA |
| Quiescent Current (IQ) | 1 | μA |
| Shutdown Current | 150 | nA |
| Dropout Voltage (IOUT = 50 mA) | 295 to 650 | mV |
| Dropout Voltage (IOUT = 150 mA) | 960 to 1400 | mV |
| Line Regulation | 3 to 10 | mV |
| Load Regulation | 20 to 50 | mV |
| Thermal Shutdown Temperature | 158 | °C |
| Operating Junction Temperature | -55 to 150 | °C |
| Storage Temperature | -55 to 150 | °C |
Key Features
- Ultra-low quiescent current of 1 μA, ideal for battery-powered systems.
- Reverse current protection to prevent discharge from the output to the input.
- Internal current limit and thermal shutdown for reliable operation.
- Low dropout voltage using a PMOS pass transistor.
- Undervoltage lockout (UVLO) circuit to ensure proper operation.
- Enable pin with a high-level input voltage of 0.9 V and low-level input voltage of 0.4 V.
- Available in SOT-23-5 and WSON-6 packages.
Applications
- Smoke and heat detectors.
- Thermostats.
- Motion detectors (PIR, uWave, etc.).
- Cordless power tools.
- Appliance battery packs.
- Electricity meters.
- Water meters.
Q & A
- What is the input voltage range of the TPS70930DBVR?
The input voltage range is from 2.7 V to 30 V. - What is the fixed output voltage of the TPS70930DBVR?
The fixed output voltage is 3.0 V. - What is the maximum continuous output current of the TPS70930DBVR?
The maximum continuous output current is 150 mA. - What is the quiescent current (IQ) of the TPS70930DBVR?
The quiescent current is 1 μA. - Does the TPS70930DBVR have thermal shutdown protection?
Yes, it has thermal shutdown protection with a shutdown temperature of 158°C. - What packages are available for the TPS70930DBVR?
The device is available in SOT-23-5 and WSON-6 packages. - How does the enable pin function on the TPS70930DBVR?
The enable pin is high when above 0.9 V and low when below 0.4 V. It can be left floating to enable the device. - What is the dropout voltage for the TPS70930DBVR at 50 mA and 150 mA output current?
The dropout voltage is approximately 295 to 650 mV at 50 mA and 960 to 1400 mV at 150 mA. - Does the TPS70930DBVR have reverse current protection?
Yes, it has integrated reverse current protection to prevent current flow from the output to the input when the output voltage is higher than the input voltage. - What are some typical applications for the TPS70930DBVR?
Typical applications include smoke and heat detectors, thermostats, motion detectors, cordless power tools, appliance battery packs, electricity meters, and water meters.
