CAT661

13

Doc. No. 5003, Rev. J

PARALLEL OPERATION

Paralleling CAT661 devices will lower output resistance. As shown in figure 13, each device requires its own pump

capacitor, C2, but the output reservoir capacitor is shared with all devices. The value of C2 should be increased by

a factor of N, where N is the number of devices.

Figure 13: Reduce Output Resistance by Paralleling Devices

+

C2

2

3

4

8

5

CAT661

"1"

+

C1

+

CAT661

"N"

2

3

4

8

5

C1N

+VIN

ROUT =

ROUT (of CAT661)

N (NUMBER OF DEVICES)