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.