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.