MAX17501GTEVKIT# Maxim Integrated, MAX17501GTEVKIT# Datasheet - Page 3

• Manufacturer Part Number: MAX17501GTEVKIT#
• Description: Power Management IC Development Tools MAX17501G Eval Kit
• Manufacturer: Maxim Integrated
• Type: DC/DC Converters, Regulators & Controllersr
• Series: MAX17501r

Specifications of MAX17501GTEVKIT#

• Rohs: yes
• Product: Evaluation Kits
• Tool Is For Evaluation Of: MAX17501G
• Input Voltage: 14 V to 60 V
• Output Voltage: 12 V
• Output Current: 500 mA
• For Use With: MAX17501G

Table 1. Regulator Enable (EN/UVLO) Jumper JU1 Settings
*Default position.
Maxim Integrated
The MAX17501B/MAX17501F EV kits provide proven
designs to evaluate the MAX17501B/MAX17501F high-
efficiency, high-voltage, synchronous step-down DC-DC
converters. The EV kits generate a fixed 5V, at load cur-
rents up to 500mA, from a 6V to 60V input supply. The
EV kits feature a 600kHz fixed switching frequency for
optimum efficiency and component size. The MAX17501B
EV kit supports a PFM control scheme with high light-load
efficiency, while the MAX17501F EV kit features a forced-
PWM control scheme that provides constant switching-
frequency operation at all load and line conditions.
The EV kits include an EN/UVLO PCB pad and jumper
JU1 to enable control of the converter output. An
additional RESET PCB pad is available for monitor-
ing the converter output. The VCC PCB pad helps
measure the internal LDO voltage.
The devices utilize an adjustable soft-start function to
limit inrush current during startup. The soft-start time is
adjusted by the value of C3, the external capacitor from
SS to GND. To adjust the soft-start time, determine C3
using the following formula:
where t
and C3 is in nanofarads.
Detailed Description of Hardware
SS
is the required soft-start time in milliseconds
SHUNT POSITION
Not installed
1-2*
2-3
C3 = 5.55 x t
MAX17501B/ MAX17501F Evaluation Kits
Soft-Start Input (SS)
SS
Evaluate: MAX17501B/MAX17501F
Connected to the center node of
resistor-divider R1 and R2
Connected to GND
Connected to IN
EN/UVLO PIN
The devices feature an EN/UVLO input. For normal
operation, a shunt should be installed across pins 1-2 on
jumper JU1. To disable the output, install a shunt across
pins 2-3 on JU1 and the EN/UVLO pin is pulled to GND.
See Table 1 for JU1 settings.
The devices offer an adjustable input undervoltage-
lockout level. Set the voltage at which the device turns
on with a resistive voltage-divider connected from VIN
to GND. Connect the center node of the divider to EN/
UVLO.
Choose R1 to be 3.3MI and then calculate R2 as
follows:
where V
turn on.
Setting the Undervoltage-Lockout Level
INU
is the voltage at which the IC is required to
in TDFN Packages
Regulator Enable/Undervoltage-
R2
=
Enabled, UVLO level set through
the R1 and R2 resistor-divider
(V
Lockout Level (EN/UVLO)
INU
R1 1.218
MAX17501_ OUTPUT
×
−
1.218)
Disabled
Enabled
3