DS2782K Maxim Integrated, DS2782K Datasheet - Page 2

• Manufacturer Part Number: DS2782K
• Description: Power Management IC Development Tools
• Manufacturer: Maxim Integrated
• Series: DS2782r

INTRODUCTION
The DS2782 evaluation kit (EV kit) makes performance evaluation, software development, and
prototyping with the DS2782 Standalone Fuel Gauge easy. The evaluation board interfaces to a PC
through a DS9123O USB Adapter and RJ-11 cable connection.
The DS2782 EV kit evaluation software gives the user complete control of all functions of the DS2782.
Separate control tabs allow the user access to all EEPROM and RAM memory locations, all control
registers, and real-time updates of all monitored parameters. The software also incorporates a data-
logging feature to monitor a cell over time.
The evaluation board circuit is designed to provide the DS2782 with accurate parameter measurements.
Kit demonstration boards will vary as they are improved upon over time. For information on the
demonstration board circuits refer to the individual board datasheets located online at www.maxim-
ic.com.
SETUP AND INSTALLATION
BOARD CONNECTIONS
Connections to the TSSOP demonstration board are best made either by soldering directly to the pads or
by using cables with mini-grabber clips. Communication to the TSSOP board can be accomplished either
through the RJ-11 jack by connecting the provided standard six conductor RJ-11 cord or by wiring
directly to the SDA, SCL and P- pads. In the latter case, the size of the board can be reduced by snapping
off the RJ-11 jack along the break line, see Figure 1. To utilize the demonstration software, the SDA,
SCL and PAC- lines must be connected to the DS9123O communication brick using either of the two
methods described.
Figures 2a and 2b show the recommended circuits to simulate charging and discharging. The Lithium-Ion
cell is connected between the B+ and B- pads. The battery charger/power supply or circuit load is
connected between the B+ and P- pads. The evaluation software can be run in either configuration as long
as a cell is connected between the B+ and B- terminals providing a minimum of 2.5 volts to power the
DS2782. Leaving the PIO pin unconnected does not interfere with the operation of the demonstration
board. Refer to the datasheet for the operation of this pin.
RJ-11
Figure 1: Communication Connections
Break Line
2 of 14
SCL
B+
SDA