MAX848ESE+T

Application Field and Working Principle

MAX848ESE Plus T, a voltage regulator from Texas Instruments (TI), is a special purpose device. It is designed for boosting mobile phone modem performance, such as improved ACPR, output power, and ISM frequency range. It features 100% over-current protection, over-voltage protection, power system fault protection, input/output transistor protection and active output current monitoring.

Operation

The MAX848ESE+T voltage regulator operates by controlling the switching frequency, operating voltage range, and output current. It generates more power with less current consumption by using a sophisticated switch control circuit. This device comprises multiple stages: the input stage, switch stage, and output stage. During the on-state, the power signal is switched on and current is allowed to flow. During the off-state, the current is blocked. The switch frequency is controlled to minimize the power dissipation while providing maximum output signal power.

Special features

The MAX848ESE+T voltage regulator has a variety of special features that enhance its performance:

• Dual-mode operation for low-noise and higher output signal power.
• High-impedance feedback ensures maximum damping ratio.
• Active output current monitoring.
• Over-voltage, over-current, power system fault, and input/output transistor protection.

Applications

The MAX848ESE+T voltage regulator is used in mobile phone modems. It provides improved ACPR, output power, and ISM frequency range. Other applications include GPS receivers, Wi-Fi routers, and automotive applications.