TI Offers Highest PSRR for 200-mA Applications with Negative Voltage LDOs

1/13/2004 - Texas Instruments Incorporated (TI) (NYSE: TXN) unveiled a family of low-dropout linear regulators (LDOs) that feature the industry´s highest power supply rejection ratio (PSRR) and ultra-low noise for 200-mA, noise-sensitive applications with negative voltages. The highly accurate, low-power LDOs support battery-powered applications including portable charge-coupled device (CCD) cameras and PDA displays, and applications with noise-sensitive circuitry such as optical drives, optical networking and video amplifiers.

The new TPS723xx high performance regulators exhibit 60 µV(RMS) of output noise, and provide a PSRR of 65 dB at 1 kHz to prevent noise coupling from the power supply. The devices are capable of operating with input voltages of -10 V to -2.7 V, and support output voltages ranging from -10 V to -1.2 V. The TPS723xx LDOs are stable with small, low-cost ceramic capacitors, and include enable (EN) and noise reduction (NR) functions. In addition, the highly accurate devices use a precision voltage reference to achieve one percent initial accuracy, and two percent over load, line and temperature variations.

Key Features of the TPS723xx LDOs:

Availability, Packaging and Pricing
The TPS723xx LDOs are available today in a five-pin, small SOT-23 package from TI and its authorized distributors. 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 power.ti.com.

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