The MAX8903A evaluation kit (EV kit) is a fully assembled and tested circuit board for evaluating the 2A, 1-cell Li+ DC-DC battery charger. The EV kit charges a single-cell lithium-ion (Li+) battery from a DC input (AC adaptor) or a USB* 100mA/500mA source and provides system power from the DC input, USB input, or battery. Battery charge current and SYS current limit are independently set. Charge current and DC converter output current limit can be set up to 2A, respectively. The USB input current can be set to 100mA or 500mA and USB suspend mode is also supported. Power not used by the system is available to charge the battery.
The MAX8903A EV kit comes standard with the MAX8903A installed. However, the EV kit can also be used to evaluate the MAX8903C and MAX8903D by replacing the MAX8903A (U1) with either the MAX8903C or the MAX8903D IC.
Key Features
Applications/Uses
DC-DC Converter Output Current-Limit Adjustment Range of 0.5A to 2A (EV Kit Standard Configuration: 2A)
Battery Charger Current-Limit Adjustment Range of 0.5A to 2A (EV Kit Standard Configuration: 1A)
USB Current Limit of 100mA or 500mA
Efficient 4MHz Switching DC-DC Converter Powers System Load and Charger
Instant On—Works with No Battery or Low Battery
28-Pin, 4mm x 4mm Thin QFN Package with Exposed Pad
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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