The LM3269TLX from Texas Instruments is a state-of-the-art, high-efficiency, adaptive power supply for RF power amplifiers.

• Description: integrated with a current-mode synchronous buck regulator and an analog bypass LDO
• Input voltage range: 2.7V to 5.5V
• Feature: adaptively provide the lowest supply voltage required by the RF power amplifier
• Feature: high-frequency operation @ a frequency of 6 MHz
• Feature: MODE pin that allows the user to force the device into a fixed-frequency PWM mode during high-power operation, or into ECO mode during low-power operation
• Load current capability: 1.5A
• Features: automatic transition between buck and bypass modes, and a built-in thermal shutdown and short-circuit protection
• Feature: low-ripple bypass mode
• Feature: VCON analog control interface
• Package: micro SMD package
• Compliance: RoHS compliant and is compatible with the Pb-free reflow temperature profile