The switching voltage regulator is used when there is a need for an additional range in the external input voltage or when lower power consumption is desired. The input voltage range is from 8 V to 40 V.

Figure C-3shows typical power operating curves for both the linear regulator (BL1810 and BL1820) and the switching regulator (BL1800) for a nonloaded Jackrabbit operating at 14.74 MHz with the programming cable connected.

Current (mA)

125

Linear regulator

 

 

(BL1810 and BL1820 @ 14.7 MHz)

100

 

75

Switching regulator

 

(BL1800 @ 29.49 MHz)

50

 

25

0 5

10

15

20

25

30

35

40

DCIN (V)

Figure C-3. Typical Jackrabbit Current Consumption

User’s Manual

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Image 85
Digi BL1800 user manual Current mA