MAX8672 Complete Backup Management IC For NiMH Batteries

The MAX8672 complete power manager for backup batteries in smart devices offers feature-programmable battery charging and main-system backup. The device includes a charger for 1- or 2-cell NiMH backup batteries.A low-quiescent current synchronous-rectified boost converter and LDO supply up to 20mA during system backup conditions. The BST output is internally set to regulate at 3.05V. The MAX8672 LDO is powered from the boost converter output and is adjustable from 1.5V to 3.05V. The MAX8672 features programmable charge current, undervoltage lockout (UVLO), and maximum cell voltage. Charging is controlled by both a Timer and thermistor monitor. Battery UVLO prevents excessive battery discharge and keeps inactive-battery drain current below 50nA. In addition, both LDO and boost converter outputs block reverse current so that Diodes are not needed when connecting these outputs directly to system supplies. The MAX8672 requires that a valid system supply be present before system backup operation CAN occur. Charging is managed by a current source that charges until the battery reaches the programmed voltage limit, or the charge Timer expires. The MAX8672 is available in a 14-pin, 3mm x 3mm TDFN package and is rated for -40C to +85C operation.
By Maxim Integrated Products
MAX8672 's PackagesMAX8672 's pdf datasheet
MAX8672ETD QFN
MAX8672ETDT QFN




MAX8672 Pinout, Pinouts
MAX8672 pinout,Pin out
This is one package pinout of MAX8672,If you need more pinouts please download MAX8672's pdf datasheet.

MAX8672 Application circuits
MAX8672 circuits
This is one application circuit of MAX8672,If you need more circuits,please download MAX8672's pdf datasheet.


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