DS2777K Maxim Integrated, DS2777K Datasheet - Page 2

• Manufacturer Part Number: DS2777K
• Description: Power Management IC Development Tools
• Manufacturer: Maxim Integrated
• Series: DS2775, DS2776, DS2777, DS2778r

DS2775–DS2778 Evaluation Kits
Figure 1. Communication Connections
Figure 2a. Charging Circuit
Figure 2b. Discharging Circuit
2
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EV BOARD
DS2775K
DS2776K
DS2777K
DS2778K
RJ11
EV BOARD
DS2775K
DS2776K
DS2777K
DS2778K
B1+
B2+
B1-
B2-
P+
P-
B1+
B2+
B1-
B2-
P+
P-
DQ
SCL
PIO
SDA
BATTERY
BATTERY
+
-
+
-
P+
BATTERY
BATTERY
+
-
+
-
P-
POWER
SUPPLY/
BATTERY
CHARGER
B1+
B1-
B2+
B2-
LOAD
Note: In the following sections, software-related items
are identified by bolding. Text in bold refers to items
directly from the EV kit software. Text in bold and
underlined refers to items from the Windows operating
system.
Connections to the TDFN demonstration board are best
made either by soldering directly to the pads or by
using cables with minigrabber clips. Communication to
the TDFN board can be accomplished either through
the RJ11 jack by connecting the provided standard six-
conductor RJ11 cord, by wiring directly to the DQ and
P- pads for the DS2775/DS2776, or by wiring directly to
the SDA, SCL, and P- pads for the DS2777/DS2778. To
use the demonstration software, the required communi-
cation lines must be connected to the DS9123O com-
munication brick using either of the two methods
described.
Figures 2a and 2b show the recommended circuits to
simulate charging and discharging. The Li+ cell is con-
nected between the B+ and B- pads. The battery
charger/power supply or circuit load is connected
between the P+ and P- pads. The evaluation software
can be run in either configuration as long as two cells
are connected between the B1+ and B1- terminals and
B2+ and B2- terminals, providing a minimum of +2.5V
to power the DS2775–DS2778.
The EV kit software can be found on our website at
www.maxim-ic.com/tools/evkit/. To install the
DS2775–DS2778 EV kit software, exit all programs cur-
rently running and unzip the downloaded file. Double-
click the SETUP.EXE icon and the installation process
begins. Follow the prompts to complete the installation.
The DS2775–DS2778 EV kit software can be uninstalled
with the Add/Remove Programs tool in the Control
Panel. After the installation is complete, open the
DS2775–DS2778 EV kit folder and run DS2775-8K.EXE
or select EV kits from the program menu. A splash
screen containing information about the evaluation kits
appears as the program is being loaded. The software
automatically detects if the DS2775/DS2776 are con-
nected and selects 1-Wire
selects the appropriate 1-Wire speed) or if the
DS2777/DS2778 are connected and selects 2-wire
communication.
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
Setup and Installation
®
Software Installation
communication (as well as
Board Connections