Overview
The TPS7A8300RGWR, produced by Texas Instruments, is a low-noise, low-dropout voltage regulator (LDO) designed to source a 2-A load with a maximum dropout voltage of 125 mV. This device is particularly suited for powering high-current, low-voltage devices such as high-end microprocessors and field-programmable gate arrays (FPGAs). It features high accuracy (1% over line, load, and temperature), remote sensing, and soft-start capabilities to reduce inrush current. The TPS7A8300 is also optimized for noise-sensitive applications in high-speed communication systems, minimizing phase noise and clock jitter in high-frequency signals.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Maximum Dropout Voltage | 125 mV | - |
| Output Current | 0 to 2 A | 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 | V |
| Input Voltage Range (With BIAS) | 1.1 V to 6.5 V | V |
| Output Voltage Range (ANY-OUT™ Version) | 0.8 V to 3.95 V | V |
| Output Voltage Range (Adjustable Version) | 0.8 V to 5.0 V | V |
| Accuracy Over Line, Load, and Temperature | 1% | - |
| Operating Temperature Range | -40°C to 125°C | °C |
| Package Type | 5-mm × 5-mm VQFN-20, 3.5-mm × 3.5-mm VQFN-20 | - |
Key Features
- Ultralow Dropout: 125 mV maximum at 2 A.
- Low Noise: 6 µV RMS output voltage noise.
- High PSRR: 40 dB at 1 MHz.
- User-Programmable Output Voltage: ANY-OUT™ version allows user-programmable output via PCB layout without external resistors.
- Adjustable Output Voltage: Up to 5 V with external resistors.
- High Accuracy: 1% accuracy over line, load, and temperature.
- Programmable Soft-Start Output: Reduces inrush current.
- Power-Good (PG) Output: Indicates the status of the output voltage.
- Stable with Ceramic Capacitor: Stable with a 22-µF output ceramic capacitor.
Applications
- High-End Microprocessors and FPGAs: Ideal for powering high-current, low-voltage devices.
- High-Speed Communication Applications: Powers noise-sensitive components, minimizing phase noise and clock jitter in high-frequency signals.
- RF, IF Components: Suitable for applications involving VCO, ADC, DAC, and LVDS.
- Wireless Infrastructure: Used in SerDes, FPGA, and DSP applications.
- Test and Measurement, Instrumentation, Medical, and Audio Devices: Applicable due to its low noise and high accuracy characteristics).
Q & A
- What is the maximum dropout voltage of the TPS7A8300?
The maximum dropout voltage is 125 mV at 2 A).
- What is the output voltage noise of the TPS7A8300?
The output voltage noise is 6 µV RMS).
- What is the power-supply ripple rejection (PSRR) of the TPS7A8300?
The PSRR is 40 dB at 1 MHz).
- What are the input voltage ranges for the TPS7A8300?
The input voltage range is 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 up to 5 V with external resistors).
- What is the accuracy of the TPS7A8300 over line, load, and temperature?
The accuracy is 1% over line, load, and temperature).
- Does the TPS7A8300 support soft-start and power-good features?
Yes, it supports programmable soft-start output and power-good (PG) output).
- What type of capacitor is recommended for stability with the TPS7A8300?
A 22-µF output ceramic capacitor is recommended for stability).
- What are the typical applications of the TPS7A8300?
Typical applications include high-end microprocessors, FPGAs, RF and IF components, wireless infrastructure, and test and measurement devices).
- What are the available package types for the TPS7A8300?
The available package types are 5-mm × 5-mm VQFN-20 and 3.5-mm × 3.5-mm VQFN-20).
