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Texas Instruments TPS7A11 Ultra-Low Dropout Linear Regulators

Texas Instruments TPS7A11 Ultra-Low Dropout Linear Regulators (LDOs) can source 500mA with an outstanding ac performance (load and line transient responses). This device has an input range of 0.75V to 3.3V and an output range of 0.5V to 3.0V with a very high accuracy of 1.5% over load, line, and temperature. This performance is ideal for supplying power to the lower core voltages of modern microcontrollers (MCUs) and analog sensors.

The primary power path is through the IN pin and can be connected to a power supply as low as 140mV above the output voltage. This device supports very low input voltages with the use of an additional VBIAS rail that is used to power the internal circuitry of the LDO. The IN and BIAS pins consume a very low quiescent current of 1.6µA and 6µA, respectively. The low IQ and ultra-low dropout features help increase the solution's efficiency in power-sensitive applications.

Features

  • 0.75V to 3.3V Ultra-low input voltage range
  • Ultra-low dropout for minimum power loss
    • 140mV (Maximum) at 500mA DRV package
    • 110mV (Maximum) at 500mA YKA package
  • Low quiescent current
    • VIN IQ = 1.6µA (Typical)
    • VBIAS IQ = 6µA (Typical)
  • 1.5% Accuracy over load, line, and temperature
  • 64dB at 1kHz High PSRR
  • Available in fixed-output voltages
    • 0.5V to 3.0V (in 50mV Steps)
  • 1.7V to 5.5V VBIAS Range
  • Packages
    • 2.0mm × 2.0mm WSON (6)
    • 0.74mm × 1.09mm DSBGA (5)
  • Active output discharge

Applications

  • SmartWatch, fitness trackers
  • Wireless headphones and earbuds
  • Camera modules
  • Smartphones and tablets
  • Portable medical devices
  • Solid State Drives (SSDs)

Functional Block Diagram

Block Diagram - Texas Instruments TPS7A11 Ultra-Low Dropout Linear Regulators
Đã phát hành: 2018-10-31 | Đã cập nhật: 2023-07-18