UC3500

UNISONIC TECHNOLOGIES CO., LTD UC3500 HIGH EFFICIENCY VFM CONTROLLED STEP-UP DC/DC CONVERTER  DESCRIPTION The UTC UC3500 Step-up DC/DC converters are optimized for applications that prioritize high efficiency and high frequency. The efficiency is greatly improved by utilizing an internal VFM controlled scheme that switches with fixed frequency and is adjustable up to more than 150 KHz depending on the load. The UTC UC3500 requires only three external components to realize the conversion from the battery voltage to the selected output voltage in the range of 2.5V ~ 5.5V. The start-up voltage of UTC UC3500 is guaranteed at 0.8V and the device is operating down to 0.5V. The Output current is guaranteed up to 150mA, while quiescent current is only 18μA.  FEATURES * 0.8V start-up voltage * 0.5V hold-on voltage * Output current up to 150mA * Low supply current of 18μA * Wide output voltage range of 2.5V~5.5V * High efficiency up to 88% * Low profile and minimum external components  ORDERING INFORMATION Ordering Number Lead Free Halogen Free UC3500L-xx-AB3-R UC3500G-xx-AB3-R UC3500L-xx-AE3-R UC3500G-xx-AE3-R UC3500L-xx-AF5-R UC3500G-xx-AF5-R Package SOT-89 SOT-23 SOT-25 CMOS IC Packing Tape Reel Tape Reel Tape Reel www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 10 QW-R502-072.I UC3500  MARKING INFORMATION PACKAGE VOLTAGE CODE SOT-25 SOT-23 SOT-89 25:2.5V 27:2.7V 28:2.8V 30:3.0V 33:3.3V 36:3.6V 40:4.0V 50:5.0V  PIN CONFIGURATION N...