Negative Voltage LDOs suit 200 mA applications.

Press Release Summary:



Available in 5-pin, SOT-23 package, TPS723xx low-dropout linear regulators (LDOs) incorporate ceramic capacitors and offer thermal shutdown and over-current protection. With 65 dB @ 1 kHz power supply rejection ratio and 60 µV(RMS) output noise, they support battery-powered applications as well as applications with noise-sensitive circuitry. Products have operating voltages from -10 to -2.7 V and support output voltages from -10 V to -1.2 V.



Original Press Release:



TI Negative Voltage LDOs Provide Industry's Highest PSRR for 200-mA Applications



New Low-Noise, Highly Accurate, Low-Power LDOs in SOT-23 Ease Design of Portable and Noise-Sensitive Applications

DALLAS (Jan. 12, 2004) - Texas Instruments Incorporated (TI) (NYSE: TXN) today 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. See: power.ti.com/sc04014.

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:

Ultra-low Noise: 60 µV(RMS) Typical

High PSRR: 65-dB Typical at 1 kHz

Low Dropout Voltage: 280 mV Typical at 200 mA, 2.5 V

Available in -2.5 V, and Adjustable (-1.2 V to -10 V) Versions

Stable with a 2.2-µF Ceramic Output Capacitor

Less than 2-µA Typical Quiescent Current in Shutdown Mode

One Percent Initial Accuracy, Two Percent Over Line, Load and Temperature

Thermal Shutdown and Over-current Protection

-40º to 125º C Operating Junction Temperature Range

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.

Texas Instruments Incorporated provides innovative DSP and analog technologies to meet our customers' real world signal processing requirements. In addition to Semiconductor, the company's businesses include Sensors & Controls, and Educational & Productivity Solutions. TI is headquartered in Dallas, Texas, and has manufacturing, design or sales operations in more than 25 countries.

Texas Instruments is traded on the New York Stock Exchange under the symbol TXN. More information is located on the World Wide Web at: www.ti.com

TI Developer Conference

System design engineers who design with TI's power management devices are welcome to attend the upcoming TI Developer Conference (TIDC), scheduled for Feb. 18-20 in Houston. The conference will focus on learning through peer-to-peer, hands-on interaction with the latest advancements in high-performance analog and digital signal processing technology for video, imaging, control, telecom, audio and security applications. Online registration for the TI Developer Conference is available through www.ti.com/tidc04mr, with an early registration $500 discount offered through Jan. 16.

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