Overview
The TPS73230DBVT is a low-dropout (LDO) voltage regulator produced by Texas Instruments. This device utilizes an advanced BiCMOS process to achieve high precision and very low dropout voltages. It features an NMOS pass transistor in a voltage-follower configuration, which ensures stability with or without an output capacitor. The TPS73230DBVT is designed for applications requiring low noise and high accuracy, making it suitable for powering sensitive components such as voltage-controlled oscillators (VCOs). The regulator is also protected by thermal shutdown and foldback current limit, enhancing its reliability and safety in various operating conditions.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range | 1.7 | - | 5.5 | V |
| Output Voltage | - | 3.0 | - | V |
| Output Current | - | - | 250 | mA |
| Dropout Voltage | - | 40 | 150 | mV |
| Output Voltage Accuracy | -0.5% | - | 0.5% | % |
| Line Regulation | - | - | 0.01 %/V | %/V |
| Load Regulation | - | - | 0.002 %/mA | %/mA |
| Output Noise (10kHz to 100kHz) | - | 30 | - | µVRMS |
| Shutdown Current | - | - | 1 | µA |
| Operating Temperature Range | -40 | - | 125 | °C |
| Package Type | - | - | SOT-23 (DBV) | - |
Key Features
- Stable with no output capacitor or any value or type of capacitor.
- Ultra-low dropout voltage: 40mV typical at 250mA.
- Excellent load transient response—with or without optional output capacitor.
- NMOS topology provides low reverse leakage current.
- Low noise: 30µVRMS typical (10kHz to 100kHz).
- 0.5% initial accuracy and 1% overall accuracy (line, load, and temperature).
- Less than 1µA maximum IQ in shutdown mode.
- Thermal shutdown and specified min and max current limit protection.
- Available in fixed and adjustable output voltage versions.
Applications
The TPS73230DBVT is suitable for a variety of applications, including:
- Portable electronics due to its low current consumption in shutdown mode.
- Powering voltage-controlled oscillators (VCOs) and other noise-sensitive components.
- General-purpose voltage regulation in embedded systems and industrial equipment.
- Battery-powered devices where low dropout voltage and high efficiency are crucial.
Q & A
- What is the input voltage range of the TPS73230DBVT?
The input voltage range is from 1.7V to 5.5V.
- What is the typical dropout voltage of the TPS73230DBVT?
The typical dropout voltage is 40mV at 250mA.
- Does the TPS73230DBVT require an output capacitor for stability?
No, the TPS73230DBVT is stable with or without an output capacitor.
- What is the output noise level of the TPS73230DBVT?
The output noise level is typically 30µVRMS from 10kHz to 100kHz.
- What is the shutdown current of the TPS73230DBVT?
The shutdown current is less than 1µA.
- What are the protection features of the TPS73230DBVT?
The device features thermal shutdown and foldback current limit protection.
- What are the available output voltage versions for the TPS732?
The TPS732 is available in fixed outputs from 1.2V to 5V and adjustable outputs from 1.2V to 5.5V.
- What is the operating temperature range of the TPS73230DBVT?
The operating temperature range is from -40°C to 125°C.
- What package types are available for the TPS73230DBVT?
The device is available in SOT-23 (DBV) package among others.
- What is the typical ground pin current of the TPS73230DBVT?
The ground pin current is nearly constant over all values of output current, typically around 400-950 µA depending on the output current.
