LM1085ISX-5.0/NOPB

The LM1085ISX-5.0/NOPB is a monolithic voltage regulatorintegrated circuit (IC) that provides the user with a logic-high enable and a voltage reference. The input voltage range is from 4.75V to 30V. The output voltage can be preset with two external resistors. The LM1085ISX-5.0/NOPB offers very low dropout performance, low quiescent current, and low noise performance. In addition, the integrated chip features overvoltage, overcurrent and overtemperature protection.

Applications

The LM1085ISX-5.0/NOPB is suitable for a wide range of applications including:

• High-efficiency, post-regulator for switched-mode power supplies (SMPS)
• Solar energy generation systems
• Battery powered systems
• General-purpose, low-dropout (LDO) regulator
• Automotive battery-powered devices

Working Principle

The LM1085ISX-5.0/NOPB has a two-transistor voltage reference that requires a logic-high enable signal and three resistors for voltage setting. The internal circuitry will ensure the output voltage is maintained within a +/- 2% accuracy. The integrated circuit features high ripple rejection, low dropout voltage (around 200mV) and low quiescent current (as low as 900uA). The output voltage is adjustable up to 5.0V with the external resistors. The IC also features a built-in overvoltage, current and temperature protection.

The integrated circuit is capable of providing up to 1A of output current with an output voltage ripple of 10mV. The operating temperature range is between -40 up to +135 degree Celsius. The chip is available in an 8-lead package and is designed to meet the needs of demanding applications in various industries.

Conclusion

The LM1085ISX-5.0/NOPB is an integrated voltage regulator that provides a logic-high enable and a voltage reference. The integrated circuit has wide input voltage range and excellent regulation accuracy. The device is suitable for a wide variety of applications such as high efficiency post-regulator for switched-mode power supplies and general-purpose low-dropout regulator. The chip features overvoltage, overcurrent and overtemperature protection and is available in an 8-lead package.