Overview
The TPS7A8300RGWT is a high-performance, low-dropout (LDO) voltage regulator manufactured by Texas Instruments. This device is designed to provide a stable and low-noise output voltage, making it ideal for powering high-current, low-voltage devices such as high-end microprocessors, field-programmable gate arrays (FPGAs), and other noise-sensitive components in high-speed communication applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range (Without BIAS) | 1.4 | 6.5 | V | |
| Input Voltage Range (With BIAS) | 1.1 | 6.5 | V | |
| Output Current | 0 | 2 | A | |
| Maximum Dropout Voltage | 125 | mV | ||
| Output Voltage Noise | 6 | µVRMS | ||
| Power-Supply Ripple Rejection (PSRR) at 1 MHz | 40 | dB | ||
| Output Voltage Accuracy | 1% | |||
| Operating Junction Temperature | -40 | 125 | °C | |
| Package Types | 5-mm × 5-mm VQFN-20, 3.5-mm × 3.5-mm VQFN-20 |
Key Features
- Ultralow Dropout Voltage: Maximum dropout voltage of 125 mV at 2 A load.
- Low Noise: Output voltage noise of 6 µVRMS.
- High PSRR: Power-supply ripple rejection of 40 dB at 1 MHz.
- Adjustable Output Voltage: Output voltage is fully user-adjustable up to 3.95 V using PCB layout without external resistors.
- High Accuracy: 1% accuracy over line, load, and temperature.
- Remote Sensing and Soft-Start: Capabilities to reduce inrush current and improve startup behavior.
- Power-Good (PG) Output: Indicates the status of the output voltage.
- Thermal Stability: Stable with a 22-µF output ceramic capacitor.
Applications
- RF and IF Components: Suitable for voltage-controlled oscillators (VCOs), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and low-voltage differential signaling (LVDS).
- Wireless Infrastructure: Used in SerDes, FPGAs, and digital signal processors (DSPs).
- Test and Measurement: Ideal for precision measurement instruments.
- Instrumentation, Medical, and Audio Devices: Suitable for applications requiring low noise and high accuracy.
Q & A
- What is the maximum output current of the TPS7A8300RGWT?
The maximum output current is 2 A.
- What is the minimum input voltage required for the TPS7A8300RGWT without a BIAS supply?
The minimum input voltage without a BIAS supply is 1.4 V.
- What is the output voltage noise of the TPS7A8300RGWT?
The output voltage noise is 6 µVRMS.
- How is the output voltage adjusted in the TPS7A8300RGWT?
The output voltage is fully user-adjustable up to 3.95 V using PCB layout without external resistors.
- What is the power-supply ripple rejection (PSRR) of the TPS7A8300RGWT at 1 MHz?
The PSRR at 1 MHz is 40 dB.
- What is the operating junction temperature range of the TPS7A8300RGWT?
The operating junction temperature range is -40°C to 125°C.
- What types of packages are available for the TPS7A8300RGWT?
The device is available in 5-mm × 5-mm VQFN-20 and 3.5-mm × 3.5-mm VQFN-20 packages.
- Does the TPS7A8300RGWT support remote sensing and soft-start?
Yes, it supports remote sensing and soft-start to reduce inrush current.
- What is the purpose of the Power-Good (PG) output in the TPS7A8300RGWT?
The PG output indicates the status of the output voltage.
- What type of capacitor is recommended for output stability in the TPS7A8300RGWT?
A 22-µF output ceramic capacitor is recommended for stability.
