1 Features
1• Ultralow IQ: 1 μA (typ), 3 μA (max)
– IGND: 6 μA (typ) at 200 mA
• Excellent transient response
• Packages:
– 1.0-mm × 1.0-mm X2SON (4)
– 0.65-mm × 0.65-mm DSBGA (4)
– SOT-23 (5)
– SOT-23 (3)
• Input voltage range: 1.4 V to 5.5 V
• Output accuracy: 1% typical, 3% maximum
• 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

2 Applications
• Wearable electronics
• Ultrabooks, tablets, E-readers
• Always-on power supplies
• Set-top boxes
• Gaming controllers, remote controls, toys, drones
• Wireless handsets and smart phones
• Portable and battery-powered equipment

3 Description
The TPS7A05 is an ultra-small, low quiescent current
low-dropout regulator (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 ultralow IQ (1 μA), consumes
very-low quiescent current for extending battery life in
battery-powered applications. The device can be
operated from rechargeable Li-Ion batteries, Liprimary
battery chemistries such as Li-SOCl2, Li-
MnO2, as well as two- or three-cell alkaline batteries.
The TPS7A05 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 DBZ), and DSBGA
(YKA) packages.