Overview
The TL1963ADCQR is a low-dropout (LDO) voltage regulator produced by Texas Instruments. This device is optimized for fast transient response and is capable of supplying up to 1.5 A of output current with a dropout voltage of 340 mV. It features a low operating quiescent current of 1 mA, which drops to less than 1 μA in shutdown. The regulator is designed for use in various applications requiring stable and low-noise power supply, particularly in sensitive RF supply applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | 1.5 A | A |
| Dropout Voltage | 340 mV | mV |
| Quiescent Current | 1 mA (typ), < 1 μA in shutdown | mA/μA |
| Output Noise | 40 μVRMS (10 Hz to 100 kHz) | μVRMS |
| Output Voltage Range | 1.21 V to 20 V (adjustable), fixed options: 1.5 V, 1.8 V, 2.5 V, 3.3 V | V |
| Minimum Output Capacitance | 10 μF | μF |
| Package Types | SOT-223 (DCQ, DCY), TO-263 (KTT) | |
| Operating Temperature Range | -40°C to 125°C | °C |
Key Features
- Fast transient response
- Low output noise (40 μVRMS from 10 Hz to 100 kHz)
- Stable with ceramic output capacitors as low as 10 μF
- No protection diodes needed
- Reverse-battery protection
- Reverse-current protection
- Thermal limiting
- Low quiescent current in shutdown (< 1 μA)
- Adjustable output voltage from 1.21 V to 20 V
Applications
- 3.3-V to 2.5-V logic power supplies
- Post regulator for switching supplies
- Battery-powered systems
- Battery-backup applications
- Dual-supply applications
- Industrial and wireless infrastructure applications
Q & A
- What is the maximum output current of the TL1963ADCQR? The maximum output current is 1.5 A.
- What is the dropout voltage of the TL1963ADCQR? The dropout voltage is 340 mV.
- What is the quiescent current of the TL1963ADCQR in normal operation and in shutdown? The quiescent current is 1 mA in normal operation and less than 1 μA in shutdown.
- What is the output noise level of the TL1963ADCQR? The output noise level is 40 μVRMS from 10 Hz to 100 kHz.
- What are the available output voltage options for the TL1963ADCQR? The device is available in fixed output voltages of 1.5 V, 1.8 V, 2.5 V, and 3.3 V, and as an adjustable device with a range from 1.21 V to 20 V.
- What is the minimum required output capacitance for the TL1963ADCQR? The minimum required output capacitance is 10 μF.
- Does the TL1963ADCQR require external protection diodes? No, the TL1963ADCQR does not require external protection diodes.
- What protection features are included in the TL1963ADCQR? The device includes reverse-battery protection, reverse-current protection, and thermal limiting.
- In what package types is the TL1963ADCQR available? The device is available in SOT-223 (DCQ, DCY) and TO-263 (KTT) packages.
- What is the operating temperature range of the TL1963ADCQR? The operating temperature range is -40°C to 125°C.
