TI Launches Buck-Boost Converter That Cuts Power Consumption of 3G and 4G LTE Power Amplifiers in Half
Published2012.09.27 11:16
September 27, 2012 – TI (CEO Kent Tran) has released a seamless-transition buck-boost regulator for RF power amplifiers used in 3G and 4G LTE smartphones, tablets, and data cards. The LM3269 1A buck-boost converter reduces current consumption by up to 50% to improve battery life while lowering amplifier heat generation by up to 30°C. (For more information on the product, samples, and evaluation board orders, please visit www.ti.com/lm3269-pr )
4G mobile phones require higher data uploads, such as for “real-time” on/off usage of applications. Therefore, high RF power amplifier output is required even under low battery voltage conditions to support LTE. The LM3269 saves energy and extends battery life by dynamically adjusting the power delivered to the power amplifier according to the required power amount. Through this converter, the amplifier can operate across the entire battery voltage range, achieving maximum efficiency and lowest noise.
Key Features and Advantages of LM3269
• Meets power requirements for 3G and 4G LTE amplifiers: Supports the full RF output power range even under relatively low battery voltage conditions.
• Extended battery life: Supports up to 95% power efficiency (3.7V input and 3.3V output under 300mA conditions), reduces battery current consumption by half, and lowers heat dissipation to 30℃
• Ultra-small solution: The 2.4MHz converter is available in an ultra-small microSMD package with a height of 0.6mm and an overall solution size of 18.8mm².
RF Power Management IC Line Expansion
TI provides the industry's most comprehensive line of DC/DC adaptive power supply circuits for RF power amplifiers. Earlier this year, TI released the LM3242 and LM3243 step-down regulators for 2G, 3G, and 4G LTE power amplifiers.
Price and Supply Time
The LM3269 is available in a 2mm x 2.5mm x 0.6mm, 12-bump lead-free microSMD package, and the price per unit is $1.20 based on 1,000 units.
More details on TI's power portfolio
• For more information on TI's battery management, low-power DC/DC converters, highly integrated PMICs, and more: www.ti.com/power-pr
• Questions and troubleshooting on the TI E2E™ Community Power Forum: www.ti.com/powerforum-pr
• Download TI's Power Management Guide: www.ti.com/powerguide-pr
• TI's PowerLab resources for reference designs: www.ti.com/powerlab-pr
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