Click here for production status of specific part numbers. MAX20345 PMIC with Ultra-Low IQ Voltage Regulators,
Buck-Boost for Optical Sensing and
Charger for Small Lithium Ion Systems General Description The MAX20345 is a power management solution featuring ultra-low IQ voltage regulators, ideal for low-power
wearable applications. The device includes a linear battery
charger with a smart power selector and several poweroptimized peripherals. The device features three buck
regulators, three low-dropout (LDO) linear regulators, and
a Buck-Boost regulator, providing up to seven regulated
voltages, each with an ultra-low quiescent current. Two
load switches allow disconnecting system peripherals to
minimize the total quiescent load of the system. MAX20345
allows system designers to minimize power consumption
and extend battery life in 24/7 operation devices, such as
those in the wearable market.
The three synchronous, high-efficiency buck regulators
use a pulse frequency modulated (PFM) control scheme
for increased efficiency during light-load operation. The
output voltage of these regulators can be programmed
through I2C down to voltages as low as 0.7V. Additionally,
the buck regulators support dynamic voltage scaling
(DVS) allowing the system designer to further improve
system power consumption when using devices that can
take advantage of DVS.
Each of the three LDO regulators output voltage can be …
