Micropower Regulated Charge Pump in 2 x 2 DFN

  
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The LTC3221 family are micropower charge pump DC/DC converters that produce a regulated output at up to 60mA. The input voltage range is 1. 8V to 5. 5V. Extremely low operating current (8 A typical at no load) and low external parts count (one fl ying capacitor and two small bypass capacitors at VIN and VOUT) make them ideally suited for small, bat
Micropower Regulated Charge Pump in 2 x 2 DFN - schematic

tery-powered applications. The LTC3221 family includes fi xed 5V and 3. 3V output versions plus an adjustable version. All parts operate as Burst Mode switched capacitor voltage doublers to achieve ultralow quiescent current. The chips use a controlled current to supply the output and will survive a continuous short-circuit from VOUT to GND. The FB pin of the adjustable LTC3221 can be used to program the desired output voltage. * The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor. Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer`s responsibility to verify proper and reliable operation in the actual end application.



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