Texas Instruments Inc. (TI, Dallas, TX) unveiled a family of low-dropout linear regulators (LDOs) that claim the industry’s highest power supply rejection ratio (PSRR) and ultra-low noise for 200mA, noise-sensitive applications with negative voltages. The accurate, low-power LDOs support battery-powered applications, including portable charge-coupled device cameras and personal digital assistant displays, and applications with noise-sensitive circuitry such as optical drives, optical networking and video amplifiers.
The new TPS723xx high-performance regulators exhibit 60µV(RMS) of output noise, and provide a PSRR of 65dB at 1kHz to prevent noise coupling from the power supply. The devices are capable of operating with input voltages of -10V to -2.7V, and support output voltages ranging from -10V to -1.2V.
The TPS723xx LDOs are available now in a five-pin, small SOT-23 package. Suggested resale pricing in quantities of 1,000 units is $1.05. Development tools for the TPS723xx devices are available in less than 24 hours through the company's website.
