说明

The TPS723xx family of low-dropout (LDO) negative voltage regulators offers an ideal combination of features to support low noise applications. These devices are capable of operating with input voltages from -10V to -2.7V, and support outputs from -10V to -1.2V. These regulators are stable with small, low-cost ceramic capacitors, and include enable (EN) and noise reduction (NR) functions. Thermal short-circuit and over-current protections are provided by internal detection and shutdown logic. High PSRR (65dB at 1kHz) and low noise (60µV_RMS) make the TPS723xx ideal for low-noise applications.

The TPS723xx uses a precision voltage reference to achieve 2% overall accuracy over load, line, and temperature variations.

特性

• Ultralow Noise: 60µV_RMS Typical
• High PSRR: 65dB Typical at 1kHz
• Low Dropout Voltage: 280mV Typical at200mA, 2.5V
• Available in -2.5V and Adjustable (-1.2V to -10V) Versions
• Stable With a 2.2µF Ceramic Output Capacitor
• Less Than 2µA Typical Quiescent Current in Shutdown Mode
• 2% Overall Accuracy
  (Line, Load, Temperature)
• Thermal and Over-Current Protection
• SOT23-5 (DBV) Package
• Operating Junction Temperature Range: -40°C to +125°C
• APPLICATIONS
  • Optical Drives
  • Optical Networking
  • Noise Sensitive Circuitry
  • GaAs FET Gate Bias
  • Video Amplifiers