MAX1538 Power-Source Selector For Dual-Battery Systems

The MAX1538 selector provides power-source control for dual-battery systems. The device selects between an AC adapter and dual batteries based on the presence of the three power sources and the state of charge of each battery. The MAX1538 includes Analog Comparators to detect AC/airline-adapter presence and determine battery undervoltage. Fast Analog circuitry allows the device to Switch between power sources to implement a break-before-make time, which allows hot swapping of battery packs. The MAX1538 independently performs power-source monitoring and selection, freeing the system power-management P for other tasks. This simplifies the development of P power-management firmware and allows the P to enter standby, reducing system power consumption.
The MAX1538 supports relearn mode, which allows the system to measure and fully utilize battery capacity. In this state, the part allows the selected battery to be discharged even when an AC adapter is present. The MAX1538 CAN also be used to power the system in an aircraft. On detecting an airline adapter, the MAX1538 automatically disables charging or discharging of battery packs and only allows the system to be powered from the adapter.
The MAX1538 is available in a space-saving 28-pin thin QFN package with a maximum footprint of 5mm x 5mm.
By Maxim Integrated Products
MAX1538 's PackagesMAX1538 's pdf datasheet
MAX1538ETI QFN
MAX1538ETI-T QFN
MAX1538ETIT QFN




MAX1538 Pinout, Pinouts
MAX1538 pinout,Pin out
This is one package pinout of MAX1538,If you need more pinouts please download MAX1538's pdf datasheet.

MAX1538 Application circuits
MAX1538 circuits
This is one application circuit of MAX1538,If you need more circuits,please download MAX1538's pdf datasheet.


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