LM3279TLE/NOPB Datasheet PDF - TI

●Description

●The LM3279 is a buck-boost DC/DC converter designed to generate output voltages above or below a given input voltage and is particularly suitable for Power Amplifiers operating from single-cell Li-Ion batteries in portable applications.

●Features

●• MIPI® RFFE Digital Control Interface

●• High-Efficiency PFM and PWM Modes with Internal Seamless Transition

●• Operates from a Single Li-Ion Cell: 2.7 V to 5.5 V

●• Adjustable Output Voltage:

●   – RFFE Digital Control: 0.4 V to 4.2 V

●   – Analog Control: 0.5 V to 4.2 V

●• 1-A Maximum Load Capability for VBATT ≥ 3.2 V, VOUT = 3.6 V

●• 2.4-MHz (typ.) Switching Frequency

●• Seamless Buck-Boost Mode Transition

●• Fast Output Voltage Transition: 0.8 V to 4 V in 20µs

●• High-Efficiency: 95% typ. at VBATT = 3.7 V, VOUT = 3.3 V, at 300 mA

●• Input Overcurrent Limit

●• Output Overvoltage Clamp

●• Internal Compensation

●Applications

●• 3G/4G Smartphones

●• RF PC Cards

●• Tablets, eBooks Readers

●• Battery-Powered RF Devices