DS2726EVKIT+ Maxim Integrated, DS2726EVKIT+ Datasheet - Page 2

• Manufacturer Part Number: DS2726EVKIT+
• Description: Power Management IC Development Tools
• Manufacturer: Maxim Integrated
• Series: DS2726r

Specifications of DS2726EVKIT+

• Rohs: yes

Figure 2. CELL CONNECTION DIAGRAM FOR LESS THAN 10 CELLS
CHARGER CONNECTION
The positive terminal of the charge supply should be connected to the PAC+ terminal of the EV board. The
negative terminal of the charge supply should be connected to the negative terminal of your battery pack. This is a
high current path therefore a heavy gauge wire should be used. Also, SLEEP will need to be pulled to VCC when
the charger is connected. The DS2726 does not regulate charge current. Current should be regulated by the
charge supply.
NOTE: The DC FET does not turn on below 2.8V per cell. When charging below 2.8V per cell the charge source
should charge at a lower rate to prevent damaging the DC FET. Once the per-cell voltage exceeds 2.8V, the DC
FET will enable and high current charge (fast charge) can begin.
CONFIGURATION
Overvoltage Threshold
The overvoltage threshold is set at the OVS1 and OVS2 pins through resistors R17, R18, R32, and R33. R17 and
R18 will pull OVS1 and OVS2 to VCC. R32 and R33 will pull OVS1 and OVS2 to VSS. V
the pin.
Table 1
Cell Balancing Voltage Threshold
The Cell Balancing Voltage Threshold is set at the CBS0 and CBS1 pins through resistors R15, R16, R30, and
R31. R15 and R16 will pull CBS0 and CBS1 to VCC. R30 and R31 will pull CBS0 and CBS1 to VSS. V
achieved by floating the pin.
V10
V8
V5
V3
V0
V9
V7
V6
V4
V2
V1
V10 = odd
9 Cell
OVS0
OVS1
V10
V8
V5
V3
V0
V9
V7
V6
V4
V2
V1
V10 = even
8 Cell
4.10
V
V
IL
IL
4.15
V
V
IM
IL
V10
V8
V5
V3
V0
V9
V7
V6
V4
V2
V1
4.20
V
V
Nominal VOV Threshold (V)
IH
IL
2 of 5
4.25
V10 = odd
V
V
IM
7 Cell
IL
4.30
V
V
IM
IM
4.35
V
V
V10
IM
V8
V5
V3
V0
IH
V9
V7
V6
V4
V2
V1
4.40
V
V
V10 = even
IL
IH
6 Cell
4.45
V
V
IM
IH
4.50
IM
V
V
IH
IH
is achieved by floating
V10
V8
V5
V3
V0
V9
V7
V6
V4
V2
V1
V10 = odd
5 Cell
IM
is