MAX8891EXK45+

MAX8891EXK45+ voltage regulator is a linear regulator device designed for mobile applications and other cost-sensitive applications. It features extremely low quiescent current and low dropout voltage, ideal for battery-powered and load transient-sensitive systems. The device is designed specifically to provide a regulated supply voltage to RF transceivers, such as Bluetooth and WLAN, in mobile and portable applications.

MAX8891EXK45+ Application Fields

The MAX8891EXK45+ is suitable for cost-sensitive, power sensitive applications such as cellular phones and other portable equipment, Bluetooth and WLAN systems, SSD modules, interfacing between DC-DC converter and low voltage designs and other applications requiring RF power control. It is capable of providing up to 350 mA of continuous output current and it operates over a wide input voltage range from 2.7V to 14V.

MAX8891EXK45+ Working Principle

The MAX8891EXK45+ employs a linear regulator to deliver a regulated output voltage with a very low dropout voltage (typically 35 mV at 250mA). The device uses a P-channel and an N-channel MOSFET connected in parallel to regulate the output voltage. The two MOSFETs are connected in series with a voltage drop across the two series connected MOSFETs forming the voltage drop that is proportional to the output current. The control circuit ( P- Channel MOSFET ) and the sense circuit (N-channel MOSFET) are also included in the circuitry and are used in the voltage regulation process of the device.

Conclusion

The MAX8891EXK45+ is a linear regulator with extremely low quiescent current and low dropout voltage. It is the ideal solution for power sensitive applications requiring RF power control. The device is designed specifically to provide a regulated supply voltage to RF transceivers, such as Bluetooth and WLAN, in mobile and portable applications, and it operates over a wide input voltage range from 2.7V to 14V.