DS2715: NiMH Battery Pack Charge Controller
Figure 7. Switching Circuit with Example Layout
+ Charge
Source
- Side
- Charge
Source
+ Side
Control
R1
D2
Q1
C1
Loop1
C2
D1
L1
Loop2
C3
Loop Areas
Minimized
C
1
C2
D1
C3
R Q1
L1
1
+
Battery
- Side
-
Battery
Side
+
D2
Control
Backside
Ground Plane
Another important layout detail is the connection of the sense resistor. Proper Kelvin connection layout should be
used to ensure the signal quality viewed by the sensing circuit inside the DS2715 is adequate. Figure 8 shows a
recommended connection of the sense lines to the resistor footprint.
Figure 8. Sense Resistor Connection Layout
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
PACKAGE TYPE
PACKAGE CODE
DOCUMENT NO.
16 SO
—
21-0041
16 of 17