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MAX77640/MAX77641 Evaluation Kit
Evaluates: MAX77640/MAX77641
General Description
The MAX77640/MAX77641 evaluation kit (EV kit) is a
fully assembled and tested printed circuit board (PCB)
that demonstrates the MAX77640/MAX77641. The EV kit
allows for easy evaluation of the MAX77640/MAX77641
resources, including the SIMO, LDO, GPIO, current sinks,
and I
2
C interface.
Windows
®
-based software provides a user-friendly graph-
ical interface (GUI) as well as a detailed register-based
interface to exercise the features of the MAX77640/
MAX77641.
Ordering Information
appears at end of data sheet.
Benefits and Features
●
Easy to Use
• GUI Drives I
2
C Interface
• Red/Green/Blue LED
• Fully Assembled and Tested
●
Emulates System Loading
• On-Board Electronic Load for LDO and SIMO Buck
Boost Outputs
• Electronic Load has Steady-State, Transient, and
Random Modes
●
Evaluates Both Push-Button and Slider-Switch
On-Key Options
Figure 1. MAX77640/MAX77641 EV Kit Photo
Windows is a registered trademark and registered service mark of Microsoft Corporation.
319-100199; Rev 0; 5/18
MAX77640/MAX77641 Evaluation Kit
Evaluates: MAX77640/MAX77641
Table 1. Default Shunt Positions and Jumper Descriptions
REFERENCE
DESIGNATOR
J100
J101
J200
J201
J202
J203
J204
J205
J206
J207
J2
J3
J4
J5
J6
J8
DEFAULT
POSITION
N/A
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
N/A
1-2
1-2
2-3
N/A
1-2
Do not connect shunts to J100.
1-2:
Connects a V
IO
to the 1.8V EV kit logic rail.
3-4:
Connects a V
IO
to the 3.3V EV kit logic rail.
5-6:
Connects a V
IO
to the LDO output.
1-2:
Connects the U200 amplifier to the gate of the Q200 load FET.
1-2:
Connects SBB0 to load cell.
1-2:
Connects the U202 amplifier to the gate of the Q202 load FET.
1-2:
Connects SBB1 to load cell.
1-2:
Connects the U204 amplifier to the gate of the Q204 load FET.
1-2:
Connects SBB2 to load cell.
1-2:
Connects the U206 amplifier to the gate of the Q206 load FET.
1-2:
Connects LDO to load cell.
Do not connect shunts to J2.
1-2:
Connects GPIO to V
IO
.
2-3:
Connects GPIO to GND.
1-2:
Connects PWRHLD to V
IO
.
2-3:
Connects PWRHLD to GND.
1-2:
Connects nEN to SW2.
2-3:
Connects nEN to SW1.
USB-Micro adapter for communications to a user PC (and use the GUI).
1-2:
Connects nRST to PWRHLD through a 150Ω resistor.
FUNCTION
Quick Start
Procedure
1)
Follow this procedure to familiarize yourself with the EV kit.
Note:
In the following sections, software-related items are
identified by bolding. Text in
bold
refers to items directly
from the EV kit software. Text in
bold and underlined
refers to items from the Windows operating system.
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation:
Visit the product webpage at
www.maximintegrat-
ed.com/max77640evkit
and navigate to Design
Resources to download the latest version of the EV
kit software. Save the EV kit software to a temporary
folder and decompress the ZIP file.
Make sure shunts are installed on jumpers per
Figure 1.
Connect a Micro-B USB cable between the EV kit’s J6
and your Windows-based PC.
Apply a 3.7V supply (set for 100mA current limit)
through an ammeter (set for 10mA range) across
the SYS and GND2 terminals of the EV kit. Turn the
supply on.
Open the GUI and press the
Connect
button in the
upper left corner. Wait for the device to respond, and in
the
Synchronize
window, press the
Read and close
button.
Required Equipment
●
●
●
●
●
●
●
MAX77640/MAX77641 EV kit
Windows-based PC
Power supply
Ammeter
DVM
Micro-USB cable
GUI
2)
3)
4)
5)
www.maximintegrated.com
Maxim Integrated
│
5
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