| Output options | Adjustable Output, Fixed Output |
| Iout (Max) (A) | 1.5 |
| Vin (Max) (V) | 20 |
| Vin (Min) (V) | 2.1 |
| Vout (Max) (V) | 20 |
| Vout (Min) (V) | 1.2 |
| Fixed output options (V) | 1.5, 1.8, 2.5, 3.3 |
| Noise (uVrms) | 40 |
| Iq (Typ) (mA) | 1 |
| Thermal resistance θJA (°C/W) | 33 |
| Rating | Catalog |
| Load capacitance (Min) (μF) | 10 |
| Regulated outputs (#) | 1 |
| Features | Enable, Reverse current protection, Reverse voltage protection |
| Accuracy (%) | 3 |
| PSRR @ 100 KHz (dB) | 45 |
| Dropout voltage (Vdo) (Typ) (mV) | 340 |
| Operating temperature range (C) | -40 to 125 |
- 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: 1.5V, 1.8V, 2.5V, 3.3V
- 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
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The TL1963A-xx devices are low-dropout (LDO) regulators optimized for fast transient response. The device can supply 1.5A of output current with a dropout voltage of 340mV. Operating quiescent current is 1mA, dropping to less than 1μA 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 1.21V to 20V. The TL1963A-xx regulators are stable with output capacitance as low as 10μF. 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 1.5V, 1.8V, 2.5V, 3.3V, and as an adjustable device with a 1.21-V reference voltage.
