FEATURES
• Input Voltage Range: +3 V to +36 V• Output Voltage Noise – 4.17 µV RMS (10 Hz, 100 kHz)
• Power-Supply Ripple Rejection: – 82 dB (100 Hz) – ≥ 55 dB (10 Hz, 10 MHz)
• ANY-OUT™ (User-Adjustable Output via PCB Layout):
– No External Resistors or Feed-Forward Capacitors Required
– Output Voltage Range: +1.4 V to +20.5 V
• Output Current: 1 A
• Dropout Voltage: 307 mV at 1 A
• CMOS Logic Level-Compatible Enable Pin
• Built-In Fixed Current Limit and Thermal Shutdown
• Available in High Thermal Performance Package: – 5-mm × 5-mm QFN
• Operating Temperature Range: –40°C to +125°C
- Voltage-Controlled Oscillators (VCO)
- Frequency Synthesizers
- Test and Measurement Applications
- Medical Applications
- RX, TX, and PA Circuitry
- Supply Rails for Operational Amplifiers,
DACs, ADCs, and Other High-Precision Analog Circuitry
- Audio Applications
- Post DC/DC Converter Regulation and
Ripple Filtering
- Industrial Instrumentation
- Base Stations and Telecom Infrastructure
- +12-V and +24-V Industrial Buses
The TPS7A47 is a positive voltage (+36 V), ultralow-noise (4.17 µV) linear regulator capable of sourcing a -A load. In addition, the TPS7A47 output voltage is fully user- adjustable via a printed circuit board (PCB) layout without the need of external resistors or feed-forward capacitors, thus reducing overall component count.
The TPS7A47 is designed with bipolar technology primarily for high-accuracy, high-precision instrumentation applications where clean voltage rails are critical to maximize system performance. This
feature makes the device ideal for powering operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other high-performance analog circuitry in critical applications (such as medical, RF, and test-and-measurement).
In addition, the TPS7A47 is ideal for post dc/dc converter regulation. By filtering out the output voltage ripple inherent to dc/dc switching conversions, maximum system performance is ensured in sensitive instrumentation, test-and measurement, audio, and RF applications.
For applications where positive and negative low regulators.
noise rails are required, consider TI's TPS7A33 family of negative high-voltage, ultralow-noise linear