LTC3221EDC-5#TRMPBF

LTC3221-5 is a micropower charge pump DC/DC converter. This device includes fixed 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 device can be used to program the desired output voltage. It is widely used in application such as low power 2 AA cell to 3.3V supply, memory backup supplies, tire pressure sensors, general purpose low power Li-Ion to 5V supply, RF transmitters, glucose meters etc.

• Ultralow power quiescent current is 8µA typical
• Input voltage range is 2.7V to 5.5V
• Output current upto 60mA
• Burst mode control, short-circuit protected
• No inductors needed, shutdown disconnects load from VIN
• Very low shutdown current is 1µA maximum
• Switching frequency is 600KHz typical
• Efficiency is 82% typical, output ripple is 45mVP-P typical at (VIN = 3V)
• Operating temperature is -40°C to 85°C
• Package style is 6-lead plastic DFN

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