LT1965IDD-3.3#TRPBF

The Analog Devices LT1965IDD-3.3#TRPBF is a high-performance low-dropout (LDO) linear voltage regulator designed to provide a stable output voltage of 3.3V. This device is particularly well-suited for applications requiring low noise and high power supply rejection, making it ideal for sensitive analog and RF applications. Below is a detailed overview of its specifications and features.

### Key Features:

1. Output Voltage: The LT1965IDD-3.3 provides a fixed output voltage of 3.3V, which is commonly used in various electronic circuits.

2. Low Dropout Voltage: The device features a low dropout voltage of approximately 300mV at a load current of 1A. This allows for efficient operation even when the input voltage is close to the output voltage.

3. High Output Current: The LT1965 can deliver up to 1.5A of output current, making it suitable for powering a wide range of devices.

4. Low Noise: The regulator has a low output noise of 20µVRMS (from 10Hz to 100kHz), which is critical for applications that require clean power supply, such as RF and precision analog circuits.

5. Power Supply Rejection Ratio (PSRR): The device exhibits excellent PSRR performance, with a typical value of 80dB at low frequencies, ensuring that variations in the input voltage do not significantly affect the output voltage.

6. Thermal Protection: The LT1965IDD-3.3 includes built-in thermal protection, which prevents the device from overheating and ensures reliable operation under varying load conditions.

7. Wide Operating Temperature Range: The device operates over a temperature range of -40°C to +125°C, making it suitable for industrial and automotive applications.

8. Package Type: The LT1965IDD-3.3 is available in a compact 8-lead MSOP package, which is ideal for space-constrained applications.

### Electrical Specifications:

- Input Voltage Range: 1.8V to 20V
- Output Voltage: 3.3V (fixed)
- Dropout Voltage: 300mV (at 1A load)
- Output Current: Up to 1.5A
- Quiescent Current: 50µA (typical)
- Load Regulation: 0.01%/mA (typical)
- Line Regulation: 0.01%/V (typical)
- Output Noise: 20µVRMS (10Hz to 100kHz)
- PSRR: 80dB (typical at 100Hz)
- Thermal Resistance (Junction to Ambient): 50°C/W (typical)

### Applications:

The LT1965IDD-3.3 is suitable for a variety of applications, including:

- RF and analog circuits
- Precision instrumentation
- Battery-powered devices
- Automotive electronics
- Communication systems

### Conclusion:

The Analog Devices LT1965IDD-3.3#TRPBF is a robust and efficient LDO voltage regulator that offers a combination of low noise, high PSRR, and low dropout voltage. Its ability to deliver up to 1.5A of output current while maintaining a stable 3.3V output makes it an excellent choice for a wide range of applications, particularly in environments where power supply stability is critical. With its compact package and wide operating temperature range, it is well-suited for both consumer and industrial applications.