MAX77596EVKIT Datasheet, PDF (1/7 Pages) Maxim Integrated Products – 300mA Maximum Load

MAX77596 Evaluation Kit
Evaluates: MAX77596
General Description
The MAX77596 evaluation kit (EV kit) demonstrates the
MAX77596 synchronous step-down converter IC with
integrated switches. The EV kit operates over a wide
input range of 3.5V to 24V and can support loads up to
300mA. The EV kit comes standard with the 3.3V fixed
output voltage version of the IC. It can be easily modified
to evaluate the 5V fixed output version or the adjustable
output voltage version.
The EV kit includes jumpers to enable or disable the
device, as well as to select either forced-PWM mode
(FPWM) or skip-mode operation. A RESETB test point is
available to monitor the voltage quality of the converter’s
output.
Features
●● Evaluates Both Fixed-Output and Adjustable-Output
Versions (3.3V Version Is Preinstalled)
●● 3.5V to 24V Input Voltage Range
●● 300mA Maximum Load
●● Demonstrates 1.1µA Quiescent Current at 14V Input
●● RESET Output Test Point
●● Simple Two-Layer Board Serves as a Reference
Design
●● Proven PCB Layout
●● Fully Assembled and Tested
Ordering Information appears at end of data sheet.
Quick Start
Required Equipment
●● MAX77596 EV kit
●● DC power supply capable of supplying 24V, 300mA
●● Variable load capable of sinking 300mA_DC at 3.3V
●● Two voltmeters
Procedure
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation. Read all the steps before
proceeding with step 1.
1) Verify that the IC is enabled by installing a shunt on
pins 1-2 on jumper J1.
2) Verify that IC is operating in skip mode by installing a
shunt on pins 2-3 on jumper J2.
3) Set the DC power supply to 0V.
4) Set the variable load to 0mA.
5) Connect the positive and negative terminals of
the power supply to the VIN and GND1 test pads,
respectively.
6) Connect terminals of the variable load to the VOUT
and GND2 test pads. Observe the positive and
negative polarity requirements of the variable load,
if there are any (VOUT is positive and GND2 is
negative).
7) Attach a voltmeter across the VOUT and GND2 test
pads.
8) Attach a voltmeter across the RESETB and GND2
test pads.
9) Ramp the DC power-supply voltage from 0 to 12V.
10) Verify that the voltmeter connected to VOUT
measures approximately 3.3V.
11) Verify that the voltmeter connected to RESETB
measures approximately 5V.
12) Enable the variable load and ramp the load current
from 0mA to 300mA.
13) Repeat steps 10 and 11.
19-7752; Rev 1; 3/16