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MAX77271 Datasheet Multimode Pa Step-down Converter

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: MAX77271 Multimode PA Step-Down Converter with Linear Bypass Mode.

General 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 driven by an external DAC to control the output voltage linearly for continuous PA power adjustment.

Key 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.

More Datasheets from Maxim Integrated (now Analog Devices)

Part Number Description
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MAX77271 Distributor