TI TPS7A1408PYBKR

TPS7A14 is a small ultra-low dropout regulator (LDO) with excellent transient response. The device delivers 1A of current with outstanding AC performance (load and line transient response). The input voltage range is 0.7V to 2.2V, the output range is 0.5V to 2.05V, with 1% ultra-high accuracy across load, line, and temperature ranges.

The main power path runs through the IN pin, which can be connected to a supply at least 50mV above the output voltage. All electrical characteristics — including excellent output voltage tolerance, transient response, and PSRR — are specified at an input voltage 100mV above the output voltage, enabling high efficiency. The regulator uses an external higher VBIAS voltage rail to power the LDO's internal circuitry, supporting very low input voltages. For example, the IN pin supply voltage can be the output of a high-efficiency DC/DC buck regulator, while the BIAS pin supply voltage can come from a rechargeable battery.

The TPS7A14 features an active pull-down circuit that rapidly discharges the output when it is disabled, providing a known startup state.

The TPS7A14 is available in an ultra-compact 0.71mm × 1.16mm, 6-bump DSBGA package, making it ideal for space-constrained applications.

• Ultra-low input voltage range: 0.7V to 2.2V
• High efficiency:
  • Dropout voltage at 1A: 70mV (maximum)
  • Suitable for VIN = VOUT + 100mV
• Excellent load transient response:
  • 20mV when ILOAD changes from 3mA to 600mA within 20μs
• Accuracy across load, line, and temperature range: 1%
• High PSRR:
  • 80dB at 1kHz (VOUT = 0.8V, IOUT = 500mA)
• Fixed output voltage options:
  • 0.5V to 2.05V (in 25mV steps)
• VBIAS range: 2.2V to 5.5V
• Active output discharge

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