MAX1889EVKIT Maxim Integrated Products, MAX1889EVKIT Datasheet - Page 5

• Manufacturer Part Number: MAX1889EVKIT
• Description: Power Management Modules & Development Tools MAX1889 EVAL KIT MAX1889 EVAL KIT
• Manufacturer: Maxim Integrated Products

Specifications of MAX1889EVKIT

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX1889 EV kit’s positive linear-regulator output is
set to 20V by feedback resistors R13 and R14. To gen-
erate output voltages other than 20V (1.25V to 28V),
select different external voltage-divider resistors (R13,
R14). Refer to the Linear-Regulator Controllers, Output
Voltage Selection section in the MAX1889 data sheet
for instructions on selecting the resistors.
Table 5. JU6 Functions
Table 7. JU4 Functions
LOCATION
LOCATION
(Default)
SHUNT
SHUNT
None
1-2
1-3
1-4
1-2
1-3
1-4
NEGATIVE CHARGE
Connected to INPUT
charge-pump output
Connected to PGND
SECOND STAGE
previous stage
POSITIVE CHARGE
charge-pump output
Connected to INPUT
Connected to VBST
Connected to
_______________________________________________________________________________________
THIRD STAGE
Not used
previous stage
Connected to
PUMP
PUMP
Positive Linear-Regulator
First stage of a two-
stage charge pump
powered by INPUT
Second stage of a three-
stage charge pump
First stage of a two-
stage charge pump
powered by PGND
Not used for one-stage
charge pump
Output Voltage
OPERATING
One-stage charge
pump powered by
VBST
Last stage of a
two-stage or
three-stage
charge pump
One-stage charge
pump powered by
INPUT
OPERATING
MODE
MODE
MAX1889 Evaluation Kit
The MAX1889 EV kit’s negative linear-regulator output
is set to -7V by feedback resistors R10 and R11. To
generate output voltages other than -7V (0 to -22V),
select different external voltage-divider resistors (R10,
R11). Refer to the Linear-Regulator Controllers, Output
Voltage Selection section in the MAX1889 data sheet
for instructions on selecting the resistors.
Table 6. JU3 Functions
Table 8. JU5 Functions
LOCATION
LOCATION
(Default)
SHUNT
SHUNT
None
1-2
2-3
1-2
1-3
1-4
NEGATIVE CHARGE
Connected to INPUT
charge-pump output
Connected to PGND
NEGATIVE CHARGE
Connected to INPUT
Connected to PGND
THIRD STAGE
previous stage
Connected to
FIRST STAGE
Not used
PUMP
PUMP
Negative Linear-Regulator
One-stage charge pump
powered by INPUT
Last stage of a two-
stage or three-stage
charge pump
One-stage charge pump
powered by PGND
First stage of a three-
stage charge pump
powered by INPUT
First stage of a three-
stage charge pump
powered by PGND
Not used for one-
stage or two-stage
charge pump
Output Voltage
OPERATING
OPERATING
MODE
MODE
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