LP2985IM5-4.5/NOPB

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Linear regulators are a type of voltage regulator which regulates the output voltage to a preset level. The \'LP2985IM5-4.5/NOPB\' is a low-cost, high efficiency, CMOS linear voltage regulator from Texas Instruments. It offers low output voltage noise and low power consumption, making it an ideal solution for applications requiring precision, low noise and low-power dissipation. This Linear Voltage Regulator includes a power-save mode which conserves energy by reducing the quiescent current to 0.1µA during the standby state and a shutdown mode which further reduces power consumption to less than 0.1µA.

Features

• The device offers a maximum output current of 250mA and a maximum dropout voltage of 1.25 V.
• The output voltage of this device is programmable and can range from 0.800 V to 5.050 V with full load.
• This regulator includes an integrated thermal shutdown to protect against device failure due to excessive junction temperatures.
• The device is available in the space-saving SOT-23 package for surface-mount applications.
• The device is RoHS compliant.

Applications

The \'LP2985IM5-4.5/NOPB\' can be used in a wide range of applications such as computers, portable equipment, and industrial and instrumentation applications. It can be used to regulate the DC supply to power microcontrollers, processors, GPS receivers and FPGAs. The device can be used to power gate drivers and other power circuits.

Working Principle

The \'LP2985IM5-4.5/NOPB\' is a linear voltage regulator. This device regulates the output voltage to a preset level. A linear regulator utilizes a pass transistor to control the output voltage. The output voltage of the device is determined by the feedback voltage, which is the voltage on the output pin. The regulator senses the voltage on the output pin and adjusts the current flow through the pass transistor in order to maintain the output voltage at the desired level.

The regulator also includes an internal voltage reference. The internal voltage reference produces a reference voltage which is then compared with the feedback voltage. If the feedback voltage is higher than the reference voltage, then the regulator decreases the current flow through the pass transistor. Conversely, if the feedback voltage is lower than the reference voltage, then the regulator increases the current flow through the pass transistor. This process is repeated constantly to maintain the output voltage at the desired level.

This regulator also includes a power-save mode which conserves power by reducing the quiescent current to 0.1µA during the standby state, and a shutdown mode which further reduces power consumption to less than 0.1µA. This ensures that the device consumes minimal power while in its standby state, extending the life of the device.

Conclusion

The \'LP2985IM5-4.5/NOPB\' is a low-cost, high efficiency, CMOS linear voltage regulator from Texas Instruments. It offers low output voltage noise and low power consumption, making it an ideal solution for applications requiring precision, low noise and low-power dissipation. The device includes an integrated thermal shutdown to protect against device failure due to excessive junction temperatures, and is available in the space-saving SOT-23 package for surface-mount applications. The device is suitable for a wide range of applications including computers, portable equipment, industrial and instrumentation applications, and can be used to power microcontrollers, processors, GPS receivers and FPGAs.

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