FAN1086M5

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

FAN1086M5 is a negative voltage regulator, it has been widely used in portable products due to its wide input voltage range and low quiescent current. Its design is enhanced to operate accurately within the rated output current and temperature. It can be used to regulate voltage within the range of ±1.5V with a peak transient output of ±2A.

Application Field

FAN1086M5 is suitable for low voltage and low power applications, such as cellular phones, digital audio players and portable medical equipment, etc. It can be used in circuits that required a precise output voltage with low power consumption.

Due to its wide range of input voltage and output current, it is also suitable for use in distributed power systems, such as automotive electric systems. It can be used in combination with other voltage regulation modules, such as high-side switches, power MOSFETs, etc.

Working Principle

FAN1086M5 operates in two different modes, depending on the input to output voltage difference. In normal mode, the current flow from the input to output is regulated, if the input to output voltage difference is high, the device operates in fold back mode.

In normal operation, the power is transferred from the input to output through an internal transistor and the output voltage is regulated with an internal error amplifier. The output voltage is also compared to the feedback voltage divided by the temperature coefficient resistors to produce a temperature-compensated voltage. The error amplifier compares the output voltage to the feedback voltage to regulate the output voltage.

In fold back mode, the current flow is regulated by the current limit comparator, which compares the voltage on a sense resistor to the current limit threshold voltage. When the output current reaches the current limit, the current flow is regulated to maintain the current limit.

To protect the device from sudden power failure, an under-voltage lockout circuit is also implemented, which will shut down the device if it detects a low voltage.

Conclusion

FAN1086M5 is a negative voltage regulator which has been used in many portable applications. Its wide input voltage range and low quiescent current has made it a popular choice in distributed power systems, such as automotive electric systems. Its two operating modes provide precise voltage regulation and protection against sudden power failure.

The specific data is subject to PDF, and the above content is for reference