AN77L04M

The AN77L04M is a three-terminal positive-voltage linear regulator that is designed to provide regulated supply voltages up to 8 V. It is a low cost, high-performance, power conversion device with excellent load/line transient response characteristics. The AN77L04M is effective in applications with minimal electrical noise. Its output noise is often well below the microprocessor noise requirement, eliminating the need for additional filtering. It is ideal for a wide range of applications, from reverse current protection to overload protection and remote diagnostics.

Features of AN77L04M

The AN77L04M is a three-terminal positive-voltage linear regulator with a maximum output current of 30 mA. It is designed to provide a regulated supply voltage up to 8V and is well suited for both DC and AC applications. It features an output enable control pin, an output enable status pin, and a power control enable pin. It also features low dropout voltage, fast transient response, and stability with ceramic output capacitors. It is rated to operate over a wide temperature range of -40 °C to 125 °C without derating.

Applications of AN77L04M

The AN77L04M can be used for a number of applications. It can be used to provide a regulated supply voltage in power supply systems, to provide voltage regulation for microprocessors and digital signal processors, to protect against reverse current flow, in overload protection circuits, and in remote diagnostics. It is ideal for a wide range of applications, including portable systems and board level voltage regulation. Additionally, it can be used in systems requiring higher current capabilities, or for applications that require a high level of stability.

Working Principle of AN77L04M

The AN77L04M is a three-terminal positive-voltage linear regulator that provides a regulated output voltage. It operates on a voltage drop principle, where the input voltage is dropped across a series of pass transistors to provide the output voltage. The pass transistors, along with the current limiting resistors, form a voltage divider network. The output voltage is determined by the ratio between the two resistors, which, in turn, is determined by the values of the resistors. The current limiting resistors also serve to limit the output current of the regulator.

The AN77L04M also includes a dedicated feedback pin that is connected to the output voltage. This feedback pin is used to provide the regulator with a reference voltage that varies with the output voltage. This reference voltage is then compared to a reference voltage generated by the regulator and any mismatch between the two is used to adjust the current flow through the pass transistors. This, in turn, adjusts the output voltage to maintain stability and regulate the output voltage of the regulator.

Conclusion

The AN77L04M is a three-terminal positive-voltage linear regulator designed to provide regulated supply voltages up to 8V. It can be used for a number of applications, from reverse current protection to overload protection and remote diagnostics. It is rated to operate over a wide temperature range of -40 °C to 125 °C without derating. The AN77L04M operates on a voltage drop principle, where the input voltage is dropped across a series of pass transistors to provide the output voltage, and includes a dedicated feedback pin that is used to provide the regulator with a reference voltage that varies with the output voltage.