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Texas Instruments TPS7A14 1A Ultra-Low Dropout Voltage Regulator

Texas Instruments TPS7A14 1A Ultra-Low Dropout (LDO) Voltage Regulator is a small, ultra low-dropout regulator (LDO) with an excellent transient response. This device can source 1A with outstanding ac performance (load and line transient responses). The input voltage range is 0.7V to 2.2V, and the output range is 0.5V to 2.05V with very high accuracy of 1% over load, line, and temperature.

The primary power path is through the IN pin and can be connected to a power supply as low as 50mV above the output voltage. All electrical characteristics (including excellent output voltage tolerance, transient response, and PSRR) are specified for input voltages 100mV greater than the output voltage, thereby yielding high practical efficiency. This regulator supports very low input voltages with the use of a higher, externally supplied VBIAS rail that is used to power the internal circuitry of the LDO. For example, the supply voltage to the IN pin can be the output of a high-efficiency DC/DC step-down regulator, and the BIAS pin supply voltage can be a rechargeable battery.

The Texas Instruments TPS7A14 is equipped with an active pulldown circuit to discharge the output when disabled quickly and provides a known start-up state. The TPS7A14 is available in an ultra-small 0.71mm × 1.16mm, 6-bump DSBGA package, suitable for space-constrained applications.

Features

  • 0.7V to 2.2V ultra-low input voltage range
  • High efficiency
    • 70mV (max) dropout voltage at 1A
    • Specified for VIN = VOUT +100mV
  • Excellent load transient response
    • 20mV for ILOAD = 3mA to 600mA in 20µs
  • Accuracy over load, line, and temperature at 1%
  • High PSRR
    • 80dB at 1kHz (VOUT = 0.8V, IOUT = 500mA)
  • Available in fixed-output voltages
    • 0.5V to 2.05V (in 25mV steps)
  • VBIAS range
    • 2.2V to 5.5V
  • Package
    • 6-pin DSBGA: 0.71mm × 1.16mm
  • Active output discharge

Applications

  • Camera modules
  • Wireless headphones and earbuds
  • Smartwatch and fitness trackers
  • Smartphones and tablets
  • Portable medical devices
  • Solid-state drives (SSDs)

Functional Block Diagram

Block Diagram - Texas Instruments TPS7A14 1A Ultra-Low Dropout Voltage Regulator

Texas Instruments TPS7A14 1A Ultra-Low Dropout Voltage Regulator