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3PEAK unveils TPL8033, a next-generation linear regulator featuring ultra-low noise and ultra-high PSRR


3PEAK (stock code: 688536), a semiconductor company focusing on high-performance analog chips and embedded processors unveils TPL8033, a next-generation linear regulator featuring ultra-low noise and ultra-high PSRR.The product supports a wide voltage input range (2.5 V to 20 V), ultra-low output voltage noise (1 μVRMS), and ultra-high PSRR (110 dB@1 kHz, 80 dB@1 MHz). By virtue of its outstanding performance, TPL8033 is widely used in VCO, PLL, ADC, and other scenarios requiring low-noise power supplies.

Highlights of TPL8033
• Operating Voltage Range: 2.5 V to 20 V
• Output Voltage Range: 1.2 V to 15 V, Adjustable Output
• Output Current: 200 mA
• Dropout Voltage Difference: 400 mV at a 200 mA Full Load
• High-accuracy Output within the Full Temperature Range: ±2%
• Ultra-high Power Supply Ripple Rejection
        • 110 dB@1 kHz
        • 80 dB@1 MHz
• Ultra-low Output Voltage Noise of 1 μVRMS
• Excellent Output Transient Response
• Supported Output Capacitance: 4.7 μF to 100 μF
• Adjustable Power-good Voltage Threshold
• Adjustable Overcurrent Protection Threshold
• Packaged with Exposed Pad: DFN3X3-10
• Wide Operating Temperature Range: -40°C to +125°C

Advantages of TPL8033

1、Ultra-high Power Supply Ripple Rejection

Power Supply Ripple Rejection (PSRR) is used to evaluate the impact of a power supply on the output of a circuit. A higher PSRR value means that the power supply has less impact on the circuit output, leading to better stability and reliability of the circuit. The PSRR of TPL8033 is 110 dB at 1 kHz and 80 dB at 1 MHz.


PSRR Curve of TPL8033

2、Ultra-low Output Voltage Noise

The optimized internal reference source, error amplifier, and power transistors of TPL8033 improve the noise performance and achieve an ultra-low noise output capability of 1 μVRMS.


Noise Spectral Density Curve of TPL8033

Typical Application of TPL8033

TPL8033 supports voltage inputs from 2.5 V to 20 V and guarantees a current output of 200 mA at a dropout voltage of 400 mV. In addition, its power-good voltage threshold and overcurrent protection threshold are configurable. Below is the circuit diagram of a typical application for TPL8033. SET is connected to a 4.7-μF capacitor to ground to further improve the PSRR and transient response of TPL8033 while reducing the output voltage noise.


Typical Application of TPL8033