Overview
The Texas Instruments TPS7A3301RGWT is a high-performance, adjustable negative single-output Low Dropout (LDO) linear voltage regulator. This device is designed to provide a stable and clean voltage supply, making it ideal for various high-precision analog applications. The TPS7A3301RGWT features an ultralow-noise output and a high power-supply rejection ratio (PSRR), ensuring minimal noise and high stability in the output voltage.
With its ability to source up to 1 A of current and operate over a wide input voltage range of -3 V to -36 V, this regulator is suitable for a variety of applications, including audio equipment, operational amplifiers, and high-precision instrumentation.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Maximum Output Current | 1 A |
| Regulator Type | Linear Voltage |
| Output Voltage Range | -1.18 V to -33 V |
| Number of Outputs | 1 |
| Line Regulation | 0.14 %V |
| Accuracy | ±2.5% |
| Load Regulation | 0.4 %V |
| Mounting Type | Surface Mount |
| Polarity | Negative |
| Package Type | VQFN |
| Pin Count | 20 |
| Reference Voltage | -1.192 V to -1.157 V |
| Output Type | Adjustable |
| Dimensions | 5.15 x 5.15 x 0.95 mm |
| Minimum Operating Temperature | -40 °C |
| Minimum Input Voltage | -3 V |
| Maximum Operating Temperature | +125 °C |
| Maximum Input Voltage | -36 V |
| Maximum Dropout Voltage | 0.8 V |
| Operating Temperature Range | -40 °C to +125 °C |
Key Features
- Ultralow Noise: The TPS7A3301RGWT features an ultralow noise output of 16 μVRMS (10 Hz to 100 kHz), making it suitable for high-precision analog applications.
- High PSRR: The device has a high power-supply rejection ratio of 72 dB at 10 kHz, ensuring minimal noise and high stability in the output voltage.
- Adjustable Output Voltage: The output voltage is adjustable from -1.18 V to -33 V, providing flexibility in various applications.
- Current Limit and Thermal Shutdown Protection: Built-in current limit and thermal shutdown features protect the device and system during fault conditions.
- CMOS Logic-Level-Compatible Enable Pin: The enable pin allows for user-customizable power management schemes.
- Surface Mount Package: The VQFN package is suitable for surface mount applications and offers a compact footprint.
- High Thermal Performance: The device is available in an external heatsink-capable package, ensuring high thermal performance.
Applications
- Audio Equipment: The ultralow noise and high PSRR make this regulator ideal for audio applications where clean voltage rails are critical.
- Operational Amplifiers, DACs, and ADCs: The TPS7A3301RGWT is suitable for powering operational amplifiers, digital-to-analog converters (DACs), and analog-to-digital converters (ADCs) due to its high accuracy and stability.
- High-Precision Instrumentation: This regulator is designed for high-precision instrumentation applications where clean and stable voltage supplies are essential.
- Post DC-DC Converter Regulation: The TPS7A3301RGWT can be used for post-regulation of DC-DC converters to further improve the output voltage quality.
Q & A
- What is the maximum output current of the TPS7A3301RGWT?
The maximum output current is 1 A.
- What is the input voltage range of the TPS7A3301RGWT?
The input voltage range is from -3 V to -36 V.
- What is the output voltage range of the TPS7A3301RGWT?
The output voltage is adjustable from -1.18 V to -33 V.
- What is the noise level of the TPS7A3301RGWT?
The device features an ultralow noise output of 16 μVRMS (10 Hz to 100 kHz).
- Does the TPS7A3301RGWT have built-in protection features?
Yes, it includes built-in current limit and thermal shutdown protection.
- What is the operating temperature range of the TPS7A3301RGWT?
The operating temperature range is from -40 °C to +125 °C.
- What package type does the TPS7A3301RGWT use?
The device is packaged in a 20-pin VQFN package.
- Is the TPS7A3301RGWT suitable for surface mount applications?
Yes, it is designed for surface mount applications.
- What is the power-supply rejection ratio (PSRR) of the TPS7A3301RGWT?
The PSRR is 72 dB at 10 kHz.
- Can the TPS7A3301RGWT be used in audio applications?
Yes, it is highly suitable for audio applications due to its ultralow noise and high PSRR.
