LM1085ISX-3.3/NOPB

The LM1085ISX-3.3/NOPB is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. It is designed to provide a stable output voltage of 3.3V with a maximum output current of 3A. This device is particularly useful in applications where space is limited and efficiency is critical, such as in portable electronics, telecommunications, and automotive systems.

Key Features:

1. Output Voltage: The LM1085ISX-3.3 provides a fixed output voltage of 3.3V, making it suitable for powering microcontrollers, sensors, and other digital devices that require a stable voltage supply.

2. Current Rating: It can deliver up to 3A of output current, which is sufficient for many applications, including powering multiple components or devices simultaneously.

3. Low Dropout Voltage: The LDO has a low dropout voltage, typically around 1.3V at full load, which allows it to maintain regulation even when the input voltage is only slightly above the output voltage. This feature is particularly beneficial in battery-powered applications where maximizing battery life is essential.

4. Thermal Protection: The LM1085ISX-3.3 includes built-in thermal shutdown protection, which prevents the device from overheating and potentially damaging itself or the connected load.

5. Short-Circuit Protection: It also features short-circuit protection, ensuring that the device can withstand fault conditions without sustaining damage.

6. Package Type: The device comes in a TO-220 package, which provides good thermal performance and allows for easy mounting on a heat sink if necessary.

7. Operating Temperature Range: The LM1085ISX-3.3 is rated for operation over a wide temperature range, typically from -40°C to +125°C, making it suitable for use in harsh environments.

8. Input Voltage Range: The input voltage range for the LM1085ISX-3.3 is typically from 4.5V to 15V, allowing it to be used in various power supply configurations.

9. Capacitor Requirements: The device requires a minimum output capacitor for stability, and it is compatible with a range of capacitor types, including tantalum and aluminum electrolytic capacitors.

Applications:

• Microcontroller Power Supplies: Ideal for powering microcontrollers and digital signal processors that require a stable 3.3V supply.
• Telecommunications Equipment: Suitable for use in telecom devices where reliable voltage regulation is critical.
• Automotive Electronics: Can be used in automotive applications due to its wide operating temperature range and robust protection features.
• Consumer Electronics: Commonly found in portable devices, such as smartphones and tablets, where space and efficiency are paramount.

Conclusion:

The LM1085ISX-3.3/NOPB from Texas Instruments is a versatile and reliable LDO voltage regulator that provides a fixed output voltage of 3.3V with a high current capacity and low dropout voltage. Its built-in protection features and wide operating range make it an excellent choice for a variety of applications in both consumer and industrial electronics.