1 Features

1• Optimized for Fast Transient Response

• Output Current: 1.5 A

• Dropout Voltage: 340 mV

• Low Noise: 40 μVRMS (10 Hz to 100 kHz)

• 1-mA Quiescent Current

• No Protection Diodes Needed

• Controlled Quiescent Current in Dropout

• Fixed Output Voltages: 1.5 V, 1.8 V, 2.5 V, 3.3 V

• Adjustable Output from 1.21 V to 20 V (TL1963A

Only)

• Less Than 1-μA Quiescent Current in Shutdown

• Stable With 10-μF Ceramic Output Capacitor

• Reverse-Battery Protection

• Reverse-Current Protection

2 Applications

• Industrial

• Wireless Infrastructure

• Radio-Frequency Systems

• 3.3-V to 2.5-V Logic Power Supplies

• Post Regulator for Switching Supplies

3 Description

The TL1963A-xx devices are low-dropout (LDO)

regulators optimized for fast transient response. The device can supply 1.5 A of output current with a

dropout voltage of 340 mV. Operating quiescent

current is 1 mA, dropping to less than 1 μA in

shutdown. Quiescent current is well controlled; it does not rise in dropout as with many other regulators. In

addition to fast transient response, the TL1963A-xx

regulators have very low output noise, which makes

them ideal for sensitive RF supply applications.