FAN1539BMPX

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The FAN1539BMPX is a linear voltage regulator from FANUC which can provide an output current of up to 1.5A. It is designed for applications where a high accuracy and low noise output voltage are required. This device features a low dropout voltage of typically 0.5V and an integrated reverse current protection.

Features

• Input voltage range from 2.5V to 6V
• Output voltage range from 1V to 5.5V
• Output current up to 1.5A
• Low dropout voltage of 0.5V
• High peak output current capability
• Integrated reverse current protection
• Low output voltage noise
• Integrated load switch
• Output current monitor

Application

The FAN1539BMPX is primarily used in handheld and battery-powered devices. It can be used for battery charging, power management, and other regulation applications. It can support a wide range of input and output voltages and is suitable for low power applications that require high accuracy and low output voltage noise.

Working Principle

The FAN1539BMPX utilizes an internally compensated voltage regulator building-block to yield a regulated output voltage. This voltage regulator includes a current limit circuit providing high peak current that is internally limited. During normal operation, the load current is dependent on the input voltage and output voltage. The output voltage is adjusted by varying the control voltage of the voltage regulator building-block.

The FAN1539BMPX also integrates a reverse current protection circuit to shutoff the device when the output voltage exceeds the input voltage. This feature prevents the power source from being damaged due to reverse current. In addition, the device includes a load switch which can be controlled through the SCP (smart current processing) pin. This pin provides a low-current path for controlling the load switch thereby reducing the power loss.

The FAN1539BMPX also features output current monitors which are used to measure the output current. These current monitors allow current monitoring at both the output and the load. The current monitors can be used to monitor either current or voltage, and they can be used to detect short circuits or over-loads.

Conclusion

The FAN1539BMPX is a linear voltage regulator from FANUC which provides an output current of up to 1.5A. It has a low dropout voltage of only 0.5V and can support a wide range of input and output voltages. Moreover, it features integrated reverse current protection and an output current monitor. These features make it suitable for a variety of applications, including power management and battery charging.

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