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Description for the TL1963A
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.
Output voltage range is from 1.21 V to 20 V. The TL1963A-xx regulators are stable with output capacitance as low as 10 µF. Small ceramic capacitors can be used without the necessary addition of ESR as is common with other regulators. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting, and reverse-current protection. The devices are available in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V, and as an adjustable device with a 1.21-V reference voltage.
Features for the TL1963A
- 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
- APPLICATIONS
- Industrial
- Wireless Infrastructure
- Radio-Frequency Systems
- 3.3-V to 2.5-V Logic Power Supplies
- Post Regulator for Switching Supplies
