LM3263 - Texas Instruments

LM3263 Step-Down DC-DC Converter

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 ens.

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.