DESCRIPTION
The LTC®3204-3.3/LTC3204-5/LTC3204B-3.3/LTC3204B-5 are low noise, constant frequency (1.2MHz) switched capacitor voltage doublers. The LTC3204-3.3/LTC3204B-3.3 can produce a regulated output voltage of 3.3V from a minimum input voltage of 1.8V (2 alkaline cells) whereas the LTC3204-5/LTC3204B-5 can produce 5V from a minimum of 2.7V (Li-Ion battery) input.

FEATURES
■ Fixed 3.3V or 5V Outputs
■ VIN Range:
    1.8V to 4.5V (LTC3204-3.3/LTC3204B-3.3)
    2.7V to 5.5V (LTC3204-5/LTC3204B-5)
■ Output Current:
    Up to 150mA (LTC3204-5/LTC3204B-5)
    Up to 50mA (LTC3204-3.3/LTC3204B-3.3)
■ Automatic Burst Mode® Operation with IQ = 48µA (LTC3204-3.3/LTC3204-5)
■ Constant Frequency Operation at All Loads (LTC3204B-3.3/LTC3204B-5)
■ Low Noise Constant Frequency (1.2MHz) Operation*
■ Built-In Soft-Start Reduces Inrush Current
■ Shutdown Disconnects Load from Input
■ Shutdown Current <1µA
■ Short-Circuit/Thermal Protection
■ Available in Low Profile 6-Lead DFN Package

APPLICATIONS
■ 2 AA Cell to 3.3V
■ Li-Ion to 5V
■ USB On-The-Go Devices
■ White LED Drivers
■ Handheld Devices