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13 Sept 06
Battery Charger, Step down DC/DC Converter,
and LDO in one IC in a tiny 3x4mm package for tiny portables
from Analogic Tech.
Anlogic Tech’s AAT2554 integrates 500 mA battery
charger, 250 mA DC/DC Converter and 300mA Low Drop Out Voltage
Regulator in a single IC for low power poratable Li-ion
battery operated applications such as bluetooth headset,
and GPS devices.
Can charge efficiently a single Li Ion cell and power few
logic and analog ICs including a Microcontroller.
Battery charger can handle a input range of 4.0V
to 6.5 V while the step down converter and LDO can handle
2.7V to 5.5 V.
Battery charger has reverse blocking protection, charge
status, charge termination functions.
Quite small inductor of 1mm height is required for 250mA
output at step down converter. LDO has a low quiescent current
of 70 uA, featuring short circuit, over temperature and
current limit protection circuits.
The volume supply available now in a lead free 16 pin 3x4
mm TDFN package.
Cost: US$2.14 each in 1K quantities.
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