MAX1747EVKIT Maxim Integrated Products, MAX1747EVKIT Datasheet - Page 3

• Manufacturer Part Number: MAX1747EVKIT
• Description: Power Management Modules & Development Tools MAX1747 EVAL KIT MAX1747 EVAL KIT
• Manufacturer: Maxim Integrated Products

Specifications of MAX1747EVKIT

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

Table 2. Jumper JU2 Functions
The MAX1747 EV kit features an option to improve the
low-current positive charge pump efficiency for low out-
put voltages at VP. Jumper JU3 selects the voltage
source for the maximum pump voltage, and thus, maxi-
mum efficiency. Table 3 lists the options.
Table 3. Jumper JU3 Functions
The MAX1747 EV kit’s high-current step-up DC-DC
converter output is set to +5V by feedback resistors
(R1, R2). To generate output voltages other than +5V,
select different external voltage-divider resistors (R1,
R2). Refer to Output Voltage Selection in the MAX1747
data sheet for instructions on selecting the resistors.
The MAX1747 EV kit’s low-current negative charge-
pump output is set to -7V by feedback resistors (R5,
R6). To generate output voltages other than -7V, select
different external voltage-divider resistors (R5, R6).
Refer to Output Voltage Selection in the MAX1747 data
sheet for instructions on selecting the resistors. See
Table 2 for the jumper selection of input voltage
ranges.
LOCATION
LOCATION
SHUNT
SHUNT
1, 2
2, 3
1, 2
2, 3
High-Current Step-Up DC-DC Converter
Low-Current Negative Charge-Pump
Connected to VOUT V P > 10V ; V O U T feed s D 1
Connected to VIN
Low-Current Positive Voltage Efficiency
Connected to
Connected to
DIODE D1
SUPN PIN
_______________________________________________________________________________________
VOUT
VIN
Output Voltages (VOUT)
Output Voltages (VN)
Evaluating Other
Output Voltages
VP < 10V; VIN feeds D1
VIN feeds low-current
VOUT voltage source
Input voltage source,
feeds low-current
negative input
negative input
OPERATING
OPERATING
MODE
MODE
MAX1747 Evaluation Kit
The MAX1747 EV kit’s low-current positive charge-
pump output is set to +12V by feedback resistors (R3,
R4). To generate output voltages other than +12V,
select different external voltage-divider resistors (R3,
R4). Refer to Output Voltage Selection in the MAX1747
data sheet for instructions on selecting the resistors.
Jumper JU4 is provided to improve the efficiency of the
low-current positive charge pump for output voltages
under 10V. See Table 3 for the jumper selection of out-
put voltage ranges.
Low-Current Positive Charge-Pump
Output Voltages (VP)
3