DESCRIPTION
Demonstration Circuit 1459B is an energy harvesting
power supply featuring the LTC3588-1/LTC3588-2.
The LTC3588 integrates a low-loss full-wave bridge
with a high efficiency buck converter to form a complete
energy harvesting solution optimized for high
output impedance energy sources such as piezoelectric
transducers. An ultralow quiescent current undervoltage
lockout mode with a wide hysteresis window
allows charge to accumulate on an input capacitor
until the buck converter can efficiently transfer a portion
of the stored charge to the output. Four output
voltages are pin selectable with up to 100mA of continuous
output current. A power good comparator
produces a logic high referenced to VOUT on the
PGOOD pin when the converter reaches the programmed
VOUT, signaling that the output is in regulation.
The LTC3588EMSE-1/LTC3588EMSE-2 are available
in a 10-lead (3mm × 3mm) MSE surface mount package
with exposed pad.