Overview
The TPS7A4700RGWT is a part of the TPS7A47 family of positive voltage, ultralow-noise, low-dropout linear regulators (LDO) from Texas Instruments. This device is capable of sourcing a 1-A load and operates within an input voltage range of +3 V to +36 V. It is designed to provide high-accuracy and high-precision voltage regulation, making it ideal for various critical applications such as medical, radio frequency (RF), and test-and-measurement equipment.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage Range | +3 V to +36 V |
| Output Voltage Noise | 4 µV RMS (10 Hz, 100 kHz) |
| Power-Supply Ripple Rejection | 82 dB (100 Hz), > 55 dB (10 Hz, 10 MHz) |
| Output Voltage Range | +1.4 V to +20.5 V (ANY-OUT™ Version), +1.4 V to +34 V (Adjustable Version) |
| Output Current | 1 A |
| Dropout Voltage | 307 mV at 1 A |
| Package | 20-pin VQFN (5-mm × 5-mm) |
| Operating Temperature Range | -40°C to 125°C |
| Thermal Shutdown Temperature | 170°C |
Key Features
- User-programmable output voltage via PCB layout (ANY-OUT™ Version) without external feedback resistors or feed-forward capacitors.
- Adjustable output voltage version available (up to 34 V) with external feedback resistors.
- CMOS logic level-compatible enable pin.
- Built-in fixed current limit and thermal shutdown.
- High-performance thermal package: 5-mm × 5-mm QFN.
- Ultralow-noise operation: 4 µV RMS.
Applications
The TPS7A4700RGWT is designed for high-accuracy, high-precision instrumentation applications where clean voltage rails are critical. It is ideal for powering operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other high-performance analog circuitry. Additionally, it is suitable for post dc-dc converter regulation to filter out output voltage ripple in sensitive instrumentation, test-and-measurement, audio, and RF applications.
Q & A
- What is the input voltage range of the TPS7A4700RGWT?
The input voltage range is +3 V to +36 V. - What is the output voltage noise of the TPS7A4700RGWT?
The output voltage noise is 4 µV RMS (10 Hz, 100 kHz). - What is the maximum output current of the TPS7A4700RGWT?
The maximum output current is 1 A. - What is the dropout voltage of the TPS7A4700RGWT at 1 A?
The dropout voltage is 307 mV at 1 A. - What is the operating temperature range of the TPS7A4700RGWT?
The operating temperature range is -40°C to 125°C. - Does the TPS7A4700RGWT have thermal shutdown protection?
Yes, it has thermal shutdown protection with a shutdown temperature of 170°C. - What package type is the TPS7A4700RGWT available in?
The TPS7A4700RGWT is available in a 20-pin VQFN (5-mm × 5-mm) package. - Can the output voltage of the TPS7A4700RGWT be adjusted?
Yes, the output voltage can be adjusted using either the ANY-OUT™ Version via PCB layout or the adjustable version with external feedback resistors. - What are some typical applications for the TPS7A4700RGWT?
Typical applications include powering operational amplifiers, ADCs, DACs, and other high-performance analog circuitry in medical, RF, and test-and-measurement equipment. - Does the TPS7A4700RGWT have built-in current limit and thermal shutdown features?
Yes, it has built-in fixed current limit and thermal shutdown features.
