A step-down converter with a built-in linear bypass function that supplies power to the multimode PA of a portable handset.
A step-down converter with a built-in linear bypass function that supplies power to the multimode PA of a portable handset.
MAX8989 is a step-down converter optimized for power supply to multimode PA modules in mobile phones and smartphones.
This device reduces system costs by providing a single power supply for all PA modules in the system.
The MAX8989 is the industry's first PA DC-DC converter that supports various mobile phones and data communication protocols (LTE, WCDMA, GSM, EDGE), making it ideal for use in integrated (multimode) PAs.
Target applications include mobile handsets and other battery-powered devices where efficiency is important.
Maxim's new DC-DC converter extends battery life and talk time in portable handsets by providing the perfect power solution for multimode PA modules.
Maxim Integrated Products (NASDAQ: MXIM) has launched the MAX8989, a step-down converter designed to power power amplifier (PA) modules in mobile phones. As the industry's first DC-DC converter supporting power management for multiple communication protocols (LTE, WCDMA, GSM, EDGE), the MAX8989 is ideal for integrated (multimode) PAs. Powered by Infineon's proven SMARTi™ UE2 RF Engine platform, this solution delivers a new level of flexibility and efficiency to multi-standard mobile phone systems.
The MAX8989 integrates a high-efficiency switching regulator with a built-in parallel bypass LDO, maximizing efficiency under all conditions. This approach enables designers to minimize power dissipation within the PA by regulating the power supply voltage at the PA's output stage. Additionally, the PA power supply voltage is designed to meet transmission power requirements.














