MAX4238ASA+

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

The MAX4238ASA+ is a low-dropout (LDO) linear regulator that features a low quiescent current of only 6.5mA, a wide operating input voltage range of 2.5V to 6V, and output currents up to 3A. The device offers a fast transient response time of typically 150us and a temperature range from -25 to +85°C. It also features a shutdown mode that has a low quiescent current of only 2µA.

Application Field of MAX4238ASA+

The MAX4238ASA+ conveys flexibility to a large range of tasks involving high current applications with low power dissipation, while conserving power and space. This integrated circuit has a wide range of applications given its low drop voltage of 160 mV and fast transient response. It is widely used in many industrial and scientific sectors such as power tools, battery chargers dental tools, health care equipment and wireless communication systems. The MAX4238ASA+ can also be used for in-vehicle systems, automotive electronics and microcontrollers.

Working Principle

The MAX4238ASA+ functions as a linear regulator which reduces voltage from the input to an appropriate level as set by the user. The working of the voltage regulator is based on the three-terminal structure of an operational amplifier (op amp) wherein the output is designed to have a linear relationship with the input. When the input voltage exceeds the set reference voltage the output voltage begins to decrease, thus maintaining the output voltage at a controllable level.

The MAX4238ASA+ also integrated with a voltage protection circuitry which disconnects the output voltage if certain conditions are met. This protection side incorporates two main components: a current-limiting circuitry and a thermal shutdown circuitry. The current-limiting circuitry restricts the output current by reducing the gain of the device until it reaches 0, thus preventing from any further over-current situations. The thermal shutdown circuit keeps the device from overheating by disconnecting the output voltage if the die temperature exceeds a certain limit.

Conclusion

The MAX4238ASA+ is a technologically superior low-dropout linear regulator. Its wide range of operating Voltage and currents, coupled with its fast transient response and wide temperature range, presents many opportunities for use in both industrial and scientific applications. Furthermore, the device integrates secondary protection circuitry which effectively guards against current surges and thermal damage.

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