AN77L035

The AN77L035 is a low-dropout integrated linear voltage regulator designed for use in both new and legacy systems, providing improved performance and robustness over legacy designs. The device provides 3.3V or 5V (depending on operating voltage) output at up to 0.5A, and is ideal for moderately low or high power applications requiring up to 2A. It includes full over-current and over-temperature protection and an adjustable reference voltage. The AN77L035 is built on a standard 20-pin SSOP-style pinout, which allows easy integration into existing designs.

The AN77L035 operates by using a power MOSFET to regulate the voltage across its output. This is achieved by a PWM control loop that monitors the output voltage, and adjusts the duty cycle of the MOSFET accordingly. The reference voltage of the AN77L035 can be adjusted with an external resistor divider, providing additional flexibility in setting the output voltage.

The AN77L035 provides an effective and reliable solution for linear voltage regulation for a variety of low to mid-power applications that require high performance and robustness. Its integrated protection features provide protection from over-current, over-temperature, short circuits and power surges. Furthermore, the adjustable reference voltage allows users to optimize the output voltage to suit the application at hand.

The design of the AN77L035 combines the benefits of both linear and switching designs. It has a lower noise floor than comparable switch-mode regulators and provides good thermal performance, allowing it to be operated over extended periods of time without significant temperature rise. Additionally, it has low parts count and reduced physical size. This makes it a viable option for use in space constrained designs.