Analog Devices MAX77857Q Manual

Evaluates: MAX77857 (FC2QFN)
General Description
The MAX77857Q evaluation kit (EV kit) is a fully
assembled and tested printed circuit board (PCB) that
demonstrates the MAX77857 in a FC2QFN package, a
high-efficiency, high-performance buck-boost regulator
with a switching current of 7A. The IC is capable of 2.5V to
16V input and dynamically adjustable 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-configured as internal feedback with default
startup output voltage at 5V. Other startup voltages can be
achieved with external feedback resistors. The output
voltage can be adjusted dynamically through the I
interface.
I/O pins are available to support the I
Enable function, and interrupt/Power-OK indicator. The
2
I C slave address, switching current limit, and feedback
configuration can be adjusted by changing the R
resistor value (R9). MAXUSB_INTERFACE# allows the
®
use of Windows -based software with a friendly graphical
user interface (GUI) as well as a detailed register-based
interface to exercise all features of the IC. The EV kit is
compatible with any version of the MAX77857 FC2QFN IC
(MAX77857BEFE+T is the default installed on the EV kit).
Check List
•
MAX77857Q IC Evaluation Board
•
MAXUSB_INTERFACE# (USB to I
•
USB Type-A to Micro-USB Cable
•
Windows-based Graphical User Interface (GUI) Software
• Can be downloaded from Maxim's website at
(under the Design Resources tab). Windows 7 or newer is required to use the EV kit GUI software.
EV Kit Specifications
SPECIFICATION
Input voltage
Output voltage
Default output voltage
Switching current limit
Peak efficiency
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2
C serial
2
C serial interface,
SEL
2
C Serial Interface)
https://www.maximintegrated.com/products/MAX77857QEVKIT
TEST CONDITION
Internal feedback
External feedback
Internal feedback
V = 4V, V = 5V, 700mA load
IN OUT
MAX77857Q Evaluation Kit
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
2
and I C Serial Interface SCL, SDA
•
MAXUSB_INTERFACE# Allows Easy Communication
with a Windows PC
•
GUI Software that Drives I
Optional Software Control
•
Startup Output Voltage Adjustable Through External
Feedback Resistors
•
Output Voltage Dynamically Adjustable Through I
Serial Interface
• 2
I C Slave Address, Switching Current Limit, and
Feedback Configuration Adjustable Using R
Ordering Information
MIN
2.5
4.5
3
2
C Serial Interface for
SEL
appears at end of data sheet.
TYP MAX UNIT
16
15
15
5
7
97.0
319-100952; Rev 0; 9/22
,
IO
2
C
(R9)
V
V
V
A
%