MAX77271 Description
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, enabling highpower transmission. The IC uses an analog input...
MAX77271 Key Features
- PA Step-Down Converter
- 7µs (typ) Settling Time for 0.7V to 3.4V Output
- Dynamic Output Voltage Setting from 0.5V to VIN
- 85mΩ PFET and 100% Duty Cycle for Low
- 3MHz Switching Frequency
- Low Output Voltage Ripple
- 2% Output Voltage Accuracy Over Load, Line
- Tiny External ponents
- 2.5A Output Current Capability
- Simple Logic On/Off Control