Overview
The TPS7A0333DBVR, produced by Texas Instruments, is an ultra-low quiescent current (IQ) low-dropout linear voltage regulator (LDO) designed for battery-powered applications. This device is part of the TPS7A03 family and is optimized for excellent transient performance, making it ideal for applications requiring very low power consumption and high efficiency.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Quiescent Current (IQ) | 200 nA | nA |
| Shutdown IQ | 3 nA | nA |
| Output Current (IOUT) | 200 mA | mA |
| Output Voltage Range | 0.8 V to 5.0 V (in 50-mV steps) | V |
| Dropout Voltage (VDO) | Dependent on output current and temperature | mV |
| Operating Temperature Range | -40°C to +125°C | °C |
| Package Options | X2SON (4-pin), DSBGA (4-pin), SOT-23 (5-pin) |
Key Features
- Ultra-low quiescent current (IQ) of 200 nA, even in dropout mode, to extend battery life.
- Shutdown IQ of 3 nA to increase shelf life of the battery.
- Excellent transient response due to dynamic and adaptive biasing, ensuring a wide loop bandwidth during transients.
- Smart enable circuit with an internally controlled pulldown resistor to minimize current drawn through the external pulldown circuit.
- Active discharge feature (in some versions) to quickly discharge the output when the device is disabled.
- Thermal protection and foldback current limit for enhanced reliability.
- Undervoltage lockout (UVLO) with hysteresis to ensure controlled turn-on and turn-off of the output voltage.
Applications
- Smoke and heat detectors
- Gas, heat, and water meters
- Blood glucose monitors and pulse oximeters
- Residential circuit breakers and fault indicators
- Building automation systems
- Other battery-powered devices requiring low power consumption and high efficiency.
Q & A
- What is the typical quiescent current (IQ) of the TPS7A0333DBVR?
The typical quiescent current (IQ) is 200 nA. - What is the maximum output current of the TPS7A0333DBVR?
The maximum output current is 200 mA. - What is the output voltage range of the TPS7A0333DBVR?
The output voltage range is from 0.8 V to 5.0 V in 50-mV steps. - How does the smart enable circuit work?
The smart enable circuit features an internal pulldown resistor that keeps the LDO disabled when the enable pin is floating or driven low, and disconnects the resistor when the enable pin is driven high. - What is the operating temperature range of the TPS7A0333DBVR?
The operating temperature range is from -40°C to +125°C. - Does the TPS7A0333DBVR have thermal protection?
Yes, it includes thermal protection and foldback current limit features. - What is the purpose of the undervoltage lockout (UVLO) feature?
The UVLO feature ensures a controlled and consistent turn-on and turn-off of the output voltage by monitoring the input voltage with hysteresis. - How does the active discharge feature work?
The active discharge feature, available in some versions, uses an internal pulldown MOSFET to quickly discharge the output when the device is disabled. - What are the package options for the TPS7A0333DBVR?
The package options include X2SON (4-pin), DSBGA (4-pin), and SOT-23 (5-pin). - What are some typical applications of the TPS7A0333DBVR?
Typical applications include smoke and heat detectors, gas and water meters, blood glucose monitors, and residential circuit breakers.
