Overview
The TPS70919DBVR is a part of the TPS709 series of ultra-low quiescent current, low-dropout (LDO) linear regulators produced by Texas Instruments. These devices are designed for power-sensitive applications, particularly in battery-powered systems that require minimal idle-state power dissipation. The TPS70919DBVR offers a fixed output voltage of 1.9V, a maximum output current of 150mA, and an input voltage range of 2.7V to 30V. It features reverse current protection, thermal shutdown, and overcurrent protection, making it a reliable choice for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 1.9 | V |
| Output Current | 150 | mA |
| Input Voltage Range | 2.7 to 30 | V |
| Quiescent Current (IQ) | 1 | μA |
| Dropout Voltage (Typical) | 295 to 1400 | mV |
| Output Voltage Accuracy | ±2% (over temperature) | % |
| Operating Junction Temperature | -40 to 125 | °C |
| Package Type | SOT-23-5 (DBV) | |
| Thermal Shutdown Temperature | 158 (shutdown), 140 (reset) | °C |
Key Features
- Ultra-low Quiescent Current: 1 μA, making it ideal for battery-powered systems.
- Reverse Current Protection: Prevents discharge current from the output into the input.
- Thermal Shutdown and Overcurrent Protection: Ensures reliable operation by protecting against thermal and current faults.
- Enable Pin: Allows the device to be enabled or disabled with a high or low logic level, respectively. The pin can be left floating to enable the device.
- High Accuracy: ±2% output voltage accuracy over temperature.
- Low Dropout Voltage: Supports operation with minimal voltage drop between input and output.
Applications
- Smoke and Heat Detectors: Ideal for power-sensitive detection systems.
- Thermostats: Suitable for temperature control systems requiring low power consumption.
- Motion Detectors (PIR, uWave, etc.): Used in motion detection systems that need low quiescent current.
- Cordless Power Tools and Appliance Battery Packs: Optimizes battery life in portable power tools and appliances.
- Electricity and Water Meters: Applicable in metering devices that require low power consumption).
Q & A
- What is the output voltage of the TPS70919DBVR?
The output voltage of the TPS70919DBVR is 1.9V.
- What is the maximum output current of the TPS70919DBVR?
The maximum output current is 150mA.
- What is the input voltage range for the TPS70919DBVR?
The input voltage range is from 2.7V to 30V.
- What is the quiescent current (IQ) of the TPS70919DBVR?
The quiescent current is 1 μA.
- Does the TPS70919DBVR have thermal shutdown protection?
Yes, it has thermal shutdown protection that triggers at 158°C and resets at 140°C).
- How does the enable pin function on the TPS70919DBVR?
The enable pin can be driven high to enable the device, driven low to disable it, or left floating to enable it. The maximum voltage on the enable pin must not exceed 6.5V).
- What type of package does the TPS70919DBVR come in?
The TPS70919DBVR comes in a SOT-23-5 (DBV) package.
- What are some common applications for the TPS70919DBVR?
Common applications include smoke and heat detectors, thermostats, motion detectors, cordless power tools, and electricity and water meters).
- Does the TPS70919DBVR have reverse current protection?
Yes, it has integrated reverse current protection to prevent discharge current from the output into the input).
- What is the operating junction temperature range for the TPS70919DBVR?
The operating junction temperature range is from -40°C to 125°C.
