Overview
The TPS7A8300RGRT, produced by Texas Instruments, is a high-performance, low-noise, low-dropout voltage regulator (LDO) designed to power high-current, low-voltage devices. This regulator is capable of sourcing a 2-A load with a maximum dropout voltage of 125 mV, making it ideal for applications involving high-end microprocessors and field-programmable gate arrays (FPGAs). The TPS7A8300 features very high accuracy (1% over line, load, and temperature), remote sensing, and programmable soft-start capabilities to reduce inrush current. Its low-noise output and high power-supply ripple rejection (40 dB at 1 MHz) make it suitable for noise-sensitive components in high-speed communication applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 20-pin VQFN (RGR) |
| Operating Temperature Range | -40°C to 125°C |
| Maximum Dropout Voltage | 125 mV at 2 A |
| Output Voltage Noise | 6 µV RMS |
| Power-Supply Ripple Rejection | 40 dB at 1 MHz |
| Input Voltage Range | Without BIAS: 1.4 V to 6.5 V, With BIAS: 1.1 V to 6.5 V |
| Output Voltage Range | ANY-OUT™ Version: 0.8 V to 3.95 V, Adjustable Version: 0.8 V to 5.0 V |
| Accuracy Over Line, Load, and Temperature | 1.0% |
| Output Capacitor Stability | Stable with a 22-µF Output Ceramic Capacitor |
| Soft-Start and Power-Good Output | Programmable Soft-Start Output, Power-Good (PG) Output |
Key Features
- Ultralow Dropout: 125 mV Maximum at 2 A
- Low Noise: 6 µV RMS output voltage noise
- High Power-Supply Ripple Rejection: 40 dB at 1 MHz
- User-Programmable Output Voltage: ANY-OUT™ Version via PCB layout without external resistors, adjustable version up to 5.0 V
- High Accuracy: 1.0% accuracy over line, load, and temperature
- Programmable Soft-Start Output: Reduces inrush current
- Power-Good (PG) Output: Indicates the status of the output voltage
- Compact Packaging: Available in 5-mm × 5-mm and 3.5-mm × 3.5-mm VQFN-20 packages
Applications
- High-End Microprocessors and FPGAs: Ideal for powering high-current, low-voltage devices
- RF and IF Components: Suitable for VCO, ADC, DAC, and LVDS applications
- Wireless Infrastructure: Used in SerDes, FPGA, and DSP applications
- Test and Measurement: Applicable in various test and measurement equipment
- Instrumentation, Medical, and Audio Devices: Used in noise-sensitive applications requiring low-noise power supply
Q & A
- What is the maximum dropout voltage of the TPS7A8300?
The maximum dropout voltage is 125 mV at a 2-A load. - What is the output voltage noise of the TPS7A8300?
The output voltage noise is 6 µV RMS. - What is the power-supply ripple rejection of the TPS7A8300?
The power-supply ripple rejection is 40 dB at 1 MHz. - What are the input voltage ranges for the TPS7A8300?
The input voltage ranges are 1.4 V to 6.5 V without BIAS and 1.1 V to 6.5 V with BIAS. - How can the output voltage be adjusted on the TPS7A8300?
The output voltage can be adjusted using the ANY-OUT™ Version via PCB layout without external resistors or using the adjustable version up to 5.0 V. - What is the accuracy of the TPS7A8300 over line, load, and temperature?
The accuracy is 1.0% over line, load, and temperature. - Does the TPS7A8300 have a soft-start feature?
Yes, it has a programmable soft-start output to reduce inrush current. - What type of packages is the TPS7A8300 available in?
The TPS7A8300 is available in 5-mm × 5-mm and 3.5-mm × 3.5-mm VQFN-20 packages. - What is the operating temperature range of the TPS7A8300?
The operating temperature range is -40°C to 125°C. - What are some typical applications of the TPS7A8300?
Typical applications include high-end microprocessors, FPGAs, RF and IF components, wireless infrastructure, test and measurement, and instrumentation, medical, and audio devices.
