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TI buck-boost converter cuts power in half for 3G, 4G LTE power amplifiers

New 1-A buck-boost converter extends battery life, reduces heat in smartphones and tablets; supports full RF output power range

Sep 25, 2012

DALLAS, Sept. 25, 2012 /PRNewswire/ -- Texas Instruments Incorporated (TI) (NASDAQ:TXN) today introduced a seamless-transition buck-boost voltage regulator for  RF power amplifiers used in 3G and 4G LTE smartphones, tablets and datacards. TI's new LM3269 1-A buck-boost converter improves battery life by cutting current consumption as much as 50 percent and decreases heat generation in the amplifier by up to 30 degrees C. For more information, samples and evaluation boards, visit: www.ti.com/lm3269-pr.  

New 4G phones have higher data upload requirements, such as "real-time," on-and-off use of applications, which require higher RF power amplifier output levels to support LTE operation, even at lower battery voltages. The LM3269 saves energy and extends battery run-time by dynamically adjusting the power delivered to power amplifiers based on how much power is needed. The converter allows the amplifier to operate across the full battery voltage range to meet these requirements with the highest efficiency and lowest noise possible.

Key features and benefits of LM3269:

  • Meets power requirements of 3G and 4G LTE amplifiers: Supports full spectrum of RF output power -- even at lower battery voltages.
  • Extends battery run-time:  Up to 95-percent power efficiency (input of 3.7 V and output of 3.3 V at 300 mA); cuts battery current consumption in half; and reduces heat dissipation by 30 degrees C.
  • Smallest solution: The 2.4-MHz converter comes in a tiny microSMD package with 0.6- mm height and 18.8-mm2 total solution size.  

Expanding line of RF power management ICs

TI provides the industry's most comprehensive line of DC/DC adaptive power supply circuits for RF power amplifiers. Earlier this year, the company introduced the LM3242 and LM3243 step-down regulators for 2G, 3G and 4G LTE power amplifiers.

Availability and pricing

The LM3269 comes in a 2-mm x 2.5-mm x 0.6-mm, 12-bump lead-free mircoSMD package, and is priced at US$1.20 in 1,000-unit quantities.

Find out more about TI's power portfolio by visiting the below links:

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SOURCE Texas Instruments Incorporated