Overview
The TPS73230DBVR is a low-dropout (LDO) voltage regulator produced by Texas Instruments. This device is part of the TPS732 series, which features an NMOS pass transistor in a voltage-follower configuration. It is designed to operate with input voltages ranging from 1.7V to 5.5V and can source up to 250mA of load current. The TPS73230DBVR is notable for its ultra-low dropout voltage of 40mV typical at 250mA, making it suitable for applications requiring high efficiency and low voltage drop.
The regulator is stable with or without an output capacitor, which makes it versatile for various load conditions. It also includes features such as thermal shutdown, foldback current limit, and low noise output, making it ideal for noise-sensitive and high-precision applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 1.7 | 5.5 | V | |
| Output Voltage | 1.2 | 5.0 | V | |
| Output Current | 250 | mA | ||
| Dropout Voltage | 40 | 150 | mV | |
| Line Regulation | 0.01 | %/V | ||
| Load Regulation | 0.002 | %/mA | ||
| Output Noise Voltage | 30 | μVRMS | ||
| Thermal Shutdown Temperature | 160 | °C | ||
| Operating Junction Temperature | -40 | 125 | °C | |
| Shutdown Current | 0.02 | 1 | μA |
Key Features
- Stable Operation Without Output Capacitor: The TPS73230DBVR is stable with or without an output capacitor, making it highly versatile for different load conditions.
- Ultra-Low Dropout Voltage: The device features an ultra-low dropout voltage of 40mV typical at 250mA, enhancing efficiency in low-voltage applications.
- Low Noise Output: With an output noise voltage of 30μVRMS (10kHz to 100kHz), it is suitable for noise-sensitive circuitry such as VCOs.
- Thermal and Current Protection: Includes thermal shutdown and foldback current limit protection to ensure safe operation.
- High Precision and Low Ground Pin Current: Uses an advanced BiCMOS process to achieve high precision and very low ground pin current.
- Enable/Shutdown Functionality: The enable pin allows the regulator to be turned on or off, with a shutdown current of less than 1μA.
- Noise Reduction Pin: The noise reduction (NR) pin can be used to further reduce output noise by connecting an external capacitor.
Applications
- Portable and Battery-Powered Equipment: Ideal for devices requiring low power consumption and high efficiency.
- Post-Regulation for Switching Supplies: Can be used to clean up the output of switching regulators.
- Noise-Sensitive Circuitry: Suitable for powering VCOs and other noise-sensitive components.
- Point of Load Regulation: Used for regulating power to DSPs, FPGAs, ASICs, and microprocessors.
Q & A
- What is the input voltage range of the TPS73230DBVR?
The input voltage range is from 1.7V to 5.5V.
- What is the maximum output current of the TPS73230DBVR?
The maximum output current is 250mA.
- Does the TPS73230DBVR require an output capacitor for stability?
No, the TPS73230DBVR is stable with or without an output capacitor.
- What is the typical dropout voltage of the TPS73230DBVR at 250mA?
The typical dropout voltage is 40mV.
- How does the noise reduction pin (NR) function?
The noise reduction pin allows for additional reduction of output noise by connecting an external capacitor.
- What are the thermal protection features of the TPS73230DBVR?
The device includes thermal shutdown and foldback current limit protection.
- What is the shutdown current of the TPS73230DBVR?
The shutdown current is less than 1μA.
- What are some common applications of the TPS73230DBVR?
Common applications include portable and battery-powered equipment, post-regulation for switching supplies, noise-sensitive circuitry, and point of load regulation for DSPs, FPGAs, ASICs, and microprocessors.
- What is the operating junction temperature range of the TPS73230DBVR?
The operating junction temperature range is from -40°C to 125°C.
- How does the enable pin function on the TPS73230DBVR?
The enable pin allows the regulator to be turned on or off; driving the pin high turns on the regulator, and driving it low puts the regulator into shutdown mode.
