LT1964ES5-SD#TRMPBF

The LT1964ES5-SD#TRMPBF is a precision low-dropout (LDO) linear voltage regulator manufactured by Analog Devices Inc., previously known as Linear Technology. This component is designed to provide a stable output voltage with minimal noise and high power supply rejection, making it suitable for sensitive analog applications.

Key Features:

1. Output Voltage: The LT1964 is available in fixed output voltage options, typically around 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V, depending on the specific variant. The fixed output voltage ensures that the device can deliver a consistent voltage level for various applications.

2. Low Dropout Voltage: The LDO features a low dropout voltage, typically around 300mV at full load, which allows it to maintain regulation even when the input voltage is only slightly above the output voltage. This characteristic is particularly beneficial in battery-powered applications where maximizing battery life is crucial.

3. High Output Current: The LT1964 can provide a maximum output current of up to 1A, making it suitable for powering a range of devices, from microcontrollers to more demanding analog circuits.

4. Low Noise: The device is designed to minimize output noise, with a typical noise level of around 20µVRMS (from 10Hz to 100kHz). This low noise performance is essential for applications in audio, RF, and precision measurement systems.

5. Power Supply Rejection Ratio (PSRR): The LT1964 exhibits excellent PSRR, typically around 80dB at low frequencies, which helps to filter out noise from the input power supply, ensuring a clean output voltage.

6. Thermal Performance: The LDO is housed in a compact 5-lead SOT-23 package, which aids in thermal dissipation. It is designed to operate over a wide temperature range, typically from -40°C to +125°C, ensuring reliability in various environmental conditions.

7. Protection Features: The LT1964 includes built-in protection features such as thermal shutdown and current limiting, which safeguard the device and the load from damage due to overheating or excessive current draw.

8. Application Areas: This LDO is ideal for applications in portable devices, RF and wireless systems, precision analog circuits, and any application requiring a low-noise, stable power supply.

Pin Configuration:

The LT1964ES5-SD#TRMPBF typically features a 5-pin configuration, including:

• Input (VIN): The pin where the input voltage is applied.
• Ground (GND): The common ground connection.
• Output (VOUT): The regulated output voltage pin.
• Bypass (BP): A pin for connecting a bypass capacitor to improve transient response and noise performance.
• NC (No Connect): A pin that is not internally connected and can be left floating.

Conclusion:

The LT1964ES5-SD#TRMPBF from Analog Devices Inc. is a highly reliable and efficient LDO voltage regulator that excels in providing low-noise, stable output voltages for a variety of sensitive electronic applications. Its combination of low dropout voltage, high PSRR, and robust protection features makes it a preferred choice for engineers designing precision power supply circuits.