TPS7A05 Low-Dropout Regulator (LDO)

By Texas Instruments 59

TPS7A05 Low-Dropout Regulator (LDO)

Texas Instruments' TPS7A05 is an ultra-small, low quiescent current LDO that can source 200 mA with excellent transient performance. This device has an output range of 0.8 V to 3.3 V with a typical 1% accuracy.

The TPS7A05 with ultra-low IQ (1 µA) consumes very-low quiescent current for extending battery life in battery-powered applications. This LDO can be operated from rechargeable Li-ion batteries, Li-primary battery chemistries such as Li-SOCl2, Li-MnO2, as well as two- or three-cell alkaline batteries. It is available with an active pulldown circuit to quickly discharge the output when disabled.

The TPS7A05 is fully specified for TJ = -40°C to +125°C operation, and is available in standard X2SON (DQN), SOT-23 (DBV), and DSBGA (YKA) packages.

Features
  • Ultra-low IQ: 1 µA (typ.), 3 µA (max.)
    • IGND: 6 µA (typ.) at 200 mA
  • Excellent transient response
  • Packages:
    • 1.0 mm x 1.0 mm X2SON (4)
    • 0.65 mm x 0.65 mm DSBGA (4)
    • SOT-23
  • Input voltage range: 1.4 V to 5.5 V
  • Output accuracy: 1% typ., 3% max.
  • Available in fixed-output voltage:
    • 0.8 V to 3.3 V
  • Very low dropout:
    • 235 mV (max.) at 200 mA (3.3 VOUT)
  • Active output discharge
  • Foldback current limit
  • Stable with a 0.47 µF or larger capacitor
Applications
  • Wearable electronics
  • Ultrabooks, tablets, and eReaders
  • Always-on power supplies
  • Set-top boxes
  • Gaming controllers, remote controls, toys, and drones
  • Wireless handsets and smartphones
  • Portable and battery-powered equipment

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