LM3263

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3263 SNVS837B – JUNE 2013 – REVISED APRIL 2016 LM3263 High-Current Step-Down DC-DC Converter With MIPI® RF Front-End Control Interface for RF Power Amplifiers 1 Features 1 MIPI® RFFE Digital Control Interface Operates from a Single Li-Ion Cell: 2.7 V to 5.5 V Dynamically Adjustable Output Voltage: 0.4 V to 3.6 V (Typical) in PFM and PWM Modes High-Efficiency PFM and PWM Modes With Internal Seamless Transition 2.5-A Maximum Load Current in PWM Mode 2.7 MHz (Typical) Switching Frequency ACB (Reduces Inductor Requirements and Size) Internal Compensation Current and Thermal Overload Protection Very Small Solution Size: Approximately 9.1 mm2 2 Applications Smartphones RF PC Cards Tablets, eBook Readers Handheld Radios Battery-Powered RF Devices 3 Description The LM3263 is a DC-DC converter optimized for powering multi-mode multi-band RF power amplifiers (PAs) from a single lithium-ion cell. The LM3263 steps down an input voltage from 2.7 V to 5.5 V to a dynamically adjustable output voltage of 0.4 V to 3.6 V. The output voltage is externally programmed through the RFFE Digital Control Interface and is set to ensure efficient operation at all power levels of the RF PA. When operating in pulse width modulated (PWM) mode, the LM3263 produces a small and predictable amount of output voltage ripple thus meeting the power and stringent spectral-compliance needs of R...