The MAX17005B evaluation kit (EV kit) is a complete and fully assembled and tested surface-mount PCB that features the MAX17005B highly integrated, multichemistry battery charger control IC. The MAX17005B EV kit utilizes two single-package n-channel MOSFETs for high-side and low-side switching for the MAX17005B internal synchronous step-down converter, and two n-channel MOSFETs and one p-channel MOSFET for the main power-source selection.
The MAX17005B EV kit is capable of supplying power to a system load while simultaneously charging 3- or 4-cell Li+ battery packs. During normal operation, the EV kit circuit automatically selects the ADAPTER input or the battery as the main power source for supplying power to the system load. If the ADAPTER input is selected as the main source and the EV kit's input-current limit is exceeded, the charge current is reduced automatically to give priority to the system load.
The EV kit's input-source-current limit is set to 4A while the maximum battery-charge voltage and charge-current thresholds can be configured up to 17.4V and 3.5A, respectively. The thresholds can be adjusted by using on-board circuitry or by connecting analog signals to the respective test points on the EV kit. A digital output signal (active-low ACOK) indicates the presence of a valid AC adapter voltage at the ADAPTER input source. The MAX17005B EV kit PCB is rated for 0°C to +70°C; however, the MAX17005B IC is rated for -40°C to +85°C.
Analog/PWM Input Charge-Current Setting
Up to 1.2MHz Switching Frequency
Programmable Charge Current Up to 3.5A
Analog Input Charge-Current-Setting Voltage
AC Adapter Input Current
AC Adapter Presence
Automatic System Power-Source Selection
Up to 17.4V (max) Battery Voltage
10V to 25V Adapter-Input Operation
Demonstrates the MAX17005B IC Internal Boost Diode
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