Overview
The LT1963AEST-3.3#TRPBF is a low dropout (LDO) voltage regulator produced by Analog Devices Inc. This device is part of the LT1963A series, which is optimized for fast transient response and low noise, making it ideal for sensitive applications such as RF supply systems. The LT1963AEST-3.3#TRPBF is specifically configured to provide a fixed output voltage of 3.3V and can supply up to 1.5A of output current.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Output Voltage | 3.3V | V |
| Output Current | 1.5A | A |
| Dropout Voltage | 340mV | mV |
| Quiescent Current | 1mA | mA |
| Quiescent Current in Shutdown | <1µA | µA |
| Noise (10Hz to 100kHz) | 40µVRMS | µVRMS |
| Operating Temperature Range | –40°C to 125°C | °C |
| Package Type | 3-Lead SOT-223 |
Key Features
- Optimized for fast transient response
- Low noise: 40µVRMS (10Hz to 100kHz)
- No protection diodes needed
- Controlled quiescent current in dropout
- Stable with 10µF output capacitor (ceramic, tantalum, or aluminum electrolytic)
- Reverse battery protection and no reverse current
- Thermal limiting and current limiting
- Shutdown current less than 1µA
Applications
- RF supply systems due to low noise characteristics
- Post-regulation for switching supplies
- Logic power supplies (e.g., 3.3V to 2.5V)
- General-purpose voltage regulation in systems requiring high current and low dropout voltage
Q & A
- What is the output voltage of the LT1963AEST-3.3#TRPBF?
The output voltage is fixed at 3.3V.
- What is the maximum output current of the LT1963AEST-3.3#TRPBF?
The maximum output current is 1.5A.
- What is the dropout voltage of the LT1963AEST-3.3#TRPBF?
The dropout voltage is 340mV.
- What is the quiescent current of the LT1963AEST-3.3#TRPBF?
The quiescent current is 1mA, dropping to less than 1µA in shutdown.
- Is the LT1963AEST-3.3#TRPBF stable with ceramic capacitors?
Yes, it is stable with ceramic capacitors as low as 10µF.
- Does the LT1963AEST-3.3#TRPBF have built-in protection features?
Yes, it includes reverse battery protection, current limiting, thermal limiting, and no reverse current protection.
- What is the operating temperature range of the LT1963AEST-3.3#TRPBF?
The operating temperature range is –40°C to 125°C.
- In what package is the LT1963AEST-3.3#TRPBF available?
The device is available in a 3-Lead SOT-223 package.
- Is the LT1963AEST-3.3#TRPBF suitable for RF applications?
Yes, it is suitable due to its low noise characteristics.
- How does the LT1963AEST-3.3#TRPBF handle transient responses?
The device is optimized for fast transient response, making it suitable for applications requiring quick voltage adjustments.
