4
AN1260.1
January 26, 2010
Board Design
TABLE 1. JUMPER SETTING SUMMARY
JUMPER
POSITION
FUNCTION
JP1
Shunt installed
Connects input source at J1 to CRDL pin
JP2
Shunt installed
Connects input source from USB port connector to USB pin
JP3
Shunt on Disable
Charger disabled
Shunt on Enable
Charger enabled
Shunt not installed
Charger enabled
Shunt on USB OFF
Turns off USB charge
JP4
Shunt on USB ON
Turns on USB charge
Shunt not installed
Turns off USB charge
JP5
Shunt installed
Sets CRDL and USB EOC current to 93mA
JP6
Shunt installed
Connects BAT to J3
JP7
Shunt installed
Sets CRDL charging current to 0.575A, if shunt on JP7 is not
installed
JP8
Shunt installed
Sets CRDL charging current to 1.04A, if shunt on JP7 is also
installed
R
5
23.7k
CRDL
1
USB
2
PPR
3
CHG
4
EN
5
IMIN 6
USBON 7
GND 8
ICDL 9
BAT 10
U1
ISL9214
C
3
1µF
C
2
4.7µF, 35V
C
1
4.7µF, 35V
C
5
0.1µF
C
6
0.1µF
C
4
0.1µF
R
1
3.3k
R
2
470
R
3
470
R
6
23.7k
R
7
11.8k
R
4
11.8k
R
8
14.7k
Q
1
D
3
4.1V
D
1
D
2
D
4
D
5
1
2
J2
1
2
J3
1
2
JP3
JP6
JP7
JP8
JP4
JP5
C
7
10µF
C
8
47µF
JP1
JP2
C
10
0.1µF
C
9
0.1µF
R
9
1
CRDL
USB
VBAT
PPR
CHG
IMIN
ICDL
EN
GND
USBON
FIGURE 2. SCHEMATIC
Application Note 1260
