Evaluates: MAX77831
MAX77831 Evaluation Kit
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General Description
The MAX77831 evaluation kit (EV kit) provides a proven
design to evaluate the MAX77831, a 7A switching current,
high-efficiency, high-performance buck-boost regulator
that only operates in forced-PWM (FPWM) mode. The IC
is capable of 2.5V to 16V input and dynamically adjust
-
able output between 4.5V to 15V when using internal
feedback resistors, or between 3V to 15V when using
external feedback resistors. The EV kit is factory-config
-
ured as internal feedback with the default startup output
voltage at 5V. Other startup voltage can be achieved
with external feedback resistors. Output voltage can be
adjusted dynamically through the I
2
C serial interface.
The I/O pins are available to support the I
2
C serial inter
-
face, Enable function, and Interrupt/Power-OK indicator.
The I
2
C slave address, switching current limit, and feed
-
back configuration can be adjusted by changing the R
SEL
resistor value (R9). The MAXUSB_INTERFACE# allows
the use of Windows
®
-based software with a friendly
graphical user interface (GUI) as well as a detailed regis
-
ter-based interface to exercise all the features of the IC.
The IC installed on the EV kit is the MAX77T.
Benefits and Features
● Proven PCB Reference Design and Layout Benefit
● Fully Assembled and Tested
● Sense Points for High-Accuracy Measurements
● Accessible Test Point Pins for EN, POKB/INTB, V
IO
,
and the I
2
C Serial Interface SCL, SDA
● MAXUSB_INTERFACE# Allows Easy Communication
with a Windows PC
● GUI Software that Drives the I
2
C Serial Interface for
Optional Software Control
● Startup Output Voltage Adjustable Through External
Feedback Resistors
● Output Voltage Dynamically Adjustable Through the
I
2
C Serial Interface
● I
2
C Slave Address, Switching Current Limit, and
Feedback Configuration Adjustable Using R
SEL
(R9)
319-100600; Rev 1; 9/21
Windows is a registered trademark of Microsoft Corp.
SPECIFICATION
TEST CONDITION
MIN
TYP
MAX
UNIT
Input Voltage
2.5
16
V
Output Voltage
Internal Feedback
4.5
15
V
External Feedback
3
15
V
Default Output Voltage
Internal Feedback
5
V
Switching Current Limit
7
A
Peak Efficiency
V
IN
= 4V, V
OUT
= 5V, 700mA Load
97.0
%
MAX77831 EV Kit Specifications
