MAX77271 - Maxim Integrated

MAX77271 Multimode PA Step-Down Converter

The MAX77271 step-down converter is optimized for powering the power amplifier (PA) in multistandard handsets such as LTE, WCDMA, TD-SCDMA, GSM, and EDGE. The device integrates a high-efficiency PWM stepdown converter for medium- and low-power transmission with an 85mΩ (typ) low dropout (LDO) bypass regulator, in parallel with the step-down converter, enabli.

Features

● PA Step-Down Converter
• 7µs (typ) Settling Time for 0.7V to 3.4V Output Voltage Change
• Dynamic Output Voltage Setting from 0.5V to VIN
• 85mΩ PFET and 100% Duty Cycle for Low Dropout
• 3MHz Switching Frequency
• Low Output Voltage Ripple
• 2% Output Voltage Accuracy Over Load, Line, and Temperature
• Tiny External Components
● 2.5A Output Current Capability
● Simple Logic On/Off Control
● Low 0.1µA Shutdown Current
● 2.7V to 5.5V Supply Voltage Range
● Thermal Overload Protection
● 1.6mm x 1.6mm WLP Package (0.69mm max Height)
● Slot-to-Slot Average Power Tra.