Overview
The TPS73133DBVR is a low-dropout linear regulator from Texas Instruments, part of the TPS731xx family. This device operates with an input voltage as low as 1.7 V and supports output voltages down to 1.2 V, while sourcing up to 150 mA of load current. It features an NMOS pass element with an integrated 4-MHz charge pump, which provides a dropout voltage of less than 100 mV at full load current. This architecture allows for stable regulation over a wide range of output capacitors, and notably, no output capacitor is required for stability. The TPS73133DBVR is particularly suited for applications requiring low noise and high precision, such as powering VCOs or other noise-sensitive loads.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range | 1.7 | - | 5.5 | V |
| Output Voltage Range (Fixed) | 1.2 | - | 5.0 | V |
| Output Current | - | - | 150 | mA |
| Dropout Voltage | - | < 100 | - | mV |
| Output Noise Voltage (10 Hz to 100 kHz) | - | 30 | - | μVRMS |
| Accuracy Over Line, Load, and Temperature | -0.5% | - | 1% | % |
| Shutdown Current | 0.02 | 1 | - | μA |
| Thermal Shutdown Temperature | - | - | 160 | °C |
| Operating Junction Temperature | -40 | - | 125 | °C |
Key Features
- Low Dropout Voltage: Less than 100 mV at full load current.
- Low Noise: Typical output noise of 30 μVRMS (10 kHz to 100 kHz) with a 0.1-μF noise reduction capacitor.
- High Accuracy: 0.5% initial accuracy and 1% overall accuracy over line, load, and temperature.
- Low Shutdown Current: Less than 1 μA in shutdown mode.
- Thermal Protection: Thermal shutdown and foldback current limit protection.
- No Output Capacitor Required: Stable regulation without the need for an output capacitor.
- Adjustable and Fixed Output Versions: Available in fixed output voltages from 1.2 V to 5 V and adjustable outputs from 1.2 V to 5.5 V.
Applications
- Smart Grid and Energy: Suitable for energy metering and smart grid applications.
- Building Automation: Used in building automation systems for reliable power supply.
- Set-Top Boxes: Ideal for powering set-top boxes and other consumer electronics.
- Medical Equipment: Applicable in medical devices requiring low noise and high precision power supply.
- Test and Measurement: Used in test and measurement equipment for stable and accurate power supply.
- Point-of-Sale Terminals: Suitable for point-of-sale terminals and other retail applications.
- Wireless Infrastructure: Used in wireless infrastructure for reliable and low-noise power supply.
Q & A
- What is the input voltage range for the TPS73133DBVR?
The input voltage range is from 1.7 V to 5.5 V.
- What is the maximum output current of the TPS73133DBVR?
The maximum output current is 150 mA.
- Does the TPS73133DBVR require an output capacitor for stability?
No, the TPS73133DBVR does not require an output capacitor for stability.
- What is the typical output noise voltage of the TPS73133DBVR?
The typical output noise voltage is 30 μVRMS (10 kHz to 100 kHz).
- What is the shutdown current of the TPS73133DBVR?
The shutdown current is less than 1 μA.
- What are the thermal protection features of the TPS73133DBVR?
The device features thermal shutdown and foldback current limit protection.
- What are the available output voltage options for the TPS731xx family?
The family offers fixed output voltages from 1.2 V to 5 V and adjustable outputs from 1.2 V to 5.5 V.
- How does the noise reduction pin (NR) function in the TPS73133DBVR?
The NR pin allows for additional reduction of output noise by connecting an external noise reduction capacitor.
- What is the operating junction temperature range of the TPS73133DBVR?
The operating junction temperature range is from -40°C to 125°C.
- What are some common applications of the TPS73133DBVR?
Common applications include smart grid and energy, building automation, set-top boxes, medical equipment, test and measurement, point-of-sale terminals, and wireless infrastructure.
