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MAX831 Evaluation Kit
Other Output Voltages
The MAX831 can be replaced with a MAX830 to gener-
ate output voltages in the 2.5V to 25V range using
external resistors. Besides replacing the IC, the only
other modifications required are to cut the trace short-
ing resistor R1, add the output-voltage-divider resistors
R1 and R2 (located on the board's solder side), and
use low-ESR output capacitors with the proper volt-
age rating . The Pin Description section of the
MAX830–MAX833 data sheet gives instructions for cal-
culating the values of external feedback resistors R1
and R2.
BOARD DIAGRAM DRAWN TO REDUCED SCALE.
Figure 2. MAX831 EV Kit Component Placement Guide—
Component Side
BOARD DIAGRAM DRAWN TO REDUCED SCALE.
Figure 4. PC Board Layout—Component Side
Reducing Current Limit
To reduce the output current to below 1A, or to reduce
the peak current limit to below 1.3A, install the current-
limiting resistor, R3, onto the board's solder side. See
Note 7 in the MAX830–MAX833 data sheet for instruc-
tions on selecting the resistor value.
BOARD DIAGRAM DRAWN TO REDUCED SCALE.
Figure 3. MAX831 EV Kit Component Placement Guide—
Solder Side
BOARD DIAGRAM DRAWN TO REDUCED SCALE.
Figure 5. PC Board Layout—Solder Side
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
3 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600
? 1995 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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