TI TPS7A1309PYCKR

TPS7A13 is a small low-dropout regulator (LDO) with excellent transient response. The device delivers 300mA output current with outstanding AC performance (load and line transient response). The input voltage range is 0.7V to 2.2V, the output voltage range is 0.5V to 2.05V, and it achieves 1% ultra-high accuracy over 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 TPS7A13 features an active pull-down circuit that rapidly discharges the output when it is disabled, providing a known startup state. The TPS7A13 is available in an ultra-compact 0.71mm × 1.0mm, 6-bump DSBGA package, making it ideal for space-constrained applications.

• Ultra-low input voltage range: 0.7V to 2.2V
• High efficiency:
  • Dropout at 300mA: 65mV (maximum)
  • Supports VIN = VOUT + 100mV
• Excellent load transient response:
  • 20mV for ILOAD stepping from 1mA to 250mA within 10µs
• Accuracy across load, line, and temperature range: 1%
• High PSRR: 80dB at 1kHz
• Available fixed output voltages:
  • 0.5V to 2.05V (in 25mV steps)
• VBIAS range:
  • 2.2V to 5.5V
• Package:
  • 6-pin 1mm × 0.71mm DSBGA
• Active output discharge

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