High-Side Power Supply

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3

50

150

100

250

200

350

300

400

13

4

2

56789

10

MAX1822

SUPPLY CURRENT

vs. C3 CAPACITOR VALUE

C3 CAPACITOR VALUE (

µF)

°C

C1 = C2 = C*

C* = 0.01

µF

C* = 0.1

µF

C* = 0.033

µF

C* = 0.047

µF

C* =

0.022

µF

50

150

100

200

250

350

300

400

14

5

23

6789

10

C3 CAPACITOR VALUE (

µF)

MAX1822

SUPPLY CURRENT

vs. C3 CAPACITOR VALUE

°C

C1 = C2 = 0.01

µF

0

0.2

0.6

0.4

1.0

1.2

0.8

1.4

26

8

4

1012141618

MAX1822

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

C1 = C2 = 0.01

µF

C3 = 1

µF

°C

C1 = C2 = 0.47

µF

12

13

14

15

16

17

0

0.8 1.0

0.4 0.6

0.2

1.2 1.4 1.6 1.8 2.0

MAX1822

OUTPUT VOLTAGE

vs. OUTPUT CURRENT

C1 = C2 = 0.01

µF

C3 = 10

µF

°C

C1 = C2 = 0.22

µF

C1 = C2 = 0.47

µF

0

200

100

400

300

600

500

700

900

800

1000

0.01

0.1

C1 = C2 CAPACITANCE VALUE (

µF)

MAX1822

MAXIMUM OUTPUT CURRENT

vs. C1 = C2 CAPACITOR VALUE

C3 = 10

µF

°C

CURRENT AT THE POINT

LOSE REGULATION.

18

21

20

19

22

23

24

04

3

12

56789

10

MAX1822

OUTPUT VOLTAGE

vs. OUTPUT CURRENT

C1 = C2

0.047

µF

C1 = C2

0.022

µF

C1 = C2

0.01

µF

C3 = 10

µF

°C

__________________________________________Typical Operating Characteristics