MAX77818EVKIT MAXIM | Alldatasheet
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Evaluates: MAX77818MAX77818 EV System General Description The MAX77818 evaluation system (EV system) consists of a MAX77818 evaluation kit (EV kit) and a companion Maxim MINIQUSB interface board. The MAX77818 EV kit is an assembled and tested PC board that demonstrates the MAX77818. The IC contains 12V input and 3A output switching mode charger. The Maxim MINIQUSB interface board allows an IBM- compatible PC to use its USB port to emulate an I 2C 2-wire interface. Windows XP ®/Windows® 7 software provides a user-friendly interface to exercise the features of the MAX77818. The menu-driven program offers a graphical user interface with control buttons.
Applications
- Smartphones and Tablets
- Other Handheld Devices Benefits and Features
- Demonstrates 12VCHGIN, 3A Charge
- Demonstrates m5 Fuel Gauge Performance
- Demonstrates Dual Input Charge
- Demonstrates OTG Mode
- Evaluates MAX77818 Detail Performances Ordering Information appears at end of data sheet. Windows and Windows XP are registered trademarks and registered service marks of Microsoft Corporation. 19-7687; Rev 1; 8/16 Required Equipment
- IBM PC-compatible computer capable of running Windows XP/Windows 7
- PC with an unused USB port
- Standard Mini-USB cable to connect the computer’s USB port to the Maxim MINIQUSB interface board
- DC power supply capable of supplying 15.0V/3A Initial Test Setup Do not turn on the DC power supplies until all connections are made. 1) Carefully connect the boards by aligning the 20-pin connector of the MAX77818 EV kit with the 20-pin header of the MINIQUSB interface board. Gently press them together. The two boards should be flush against each other. 2) Connect a cable from the computer’s USB port to the MINIQUSB interface board. Use the USB cable that Maxim provides. 3) Install the MAXIM MINIQUSB driver when PC prompts USB device detection. 4) Connect a single cell Li-Ion battery to the pads labeled BATT+ and BATT-. 5) Connect the DC power supply capable of supplying 15V ±0.2V/3A to the pads labeled VBUS and GND on the MAX77818 EV board. 6) Turn on the 5V DC power supply. 7) Start the MAX77818 program by opening its icon in the Start menu. The MAX77818.EXE software pro- gram can be run from the hard drive using Windows. If desired, use the INSTALL.EXE program to copy the files and create icons for them in the Windows XP/ Window 7 Start menu. An uninstall program is included with the software. Click on the UNINSTALL icon to remove the EV kit software from the hard drive. 8) Observe as the program automatically detects the ad- dress of the MAX77818 and starts the main program.
method to exercise all of the features of the MAX77818. Figure 1. MAX77818 EV Kit GUI Screen
and current limit to 5.0V with 3.0A current limited. tings adequate to your system. Figure 2. MAX77818 EV Kit Fuel Gauge GUI Screen Table 1. Jumper Settings
1) Close MAX77818 EV kit GUI. Fuel gauge uses a separate GUI. 2) Open FG section software screen and see if FG reads proper OCV and SOC while charging. 3) Open FG section software screen and see if FG reads proper OCV and SOC while discharging. Figure 3. Schematic Diagram
Maxim Integrated │ 5 www.maximintegrated.com Evaluates: MAX77818MAX77818 EV System Note: All resistors are 0402 size. MAX77818 EV System Component List MAX77818 EV Kit Component List PART QTY DESCRIPTION MAX77818EVKIT 1 MAX77818 evaluation kit MAXIM MINIQUSB 1 MINIQUSB interface board DESIGNATION QTY DESCRIPTION C1 1 0.1µF, 35V or 50V, 0402 ceramic capacitor Taiyo Yuden GMK105BJ104MV C2, C4 2 2.2µF, 16V, 0603, ceramic capacitor Taiyo Yuden EMK107BJ225MA C3 1 4.7µF, 10V, 0603, ceramic capacitor Taiyo Yuden LMK107BJ475MA C5, C6 2 1µF, 10V, X5R, 0402, ceramic capacitor Taiyo Yuden LMK105BJ105MV C8, C12–C14 4 10µF, 10V, X5R, 0603, ceramic capacitor Taiyo Yuden LMK107BBJ106MAL C9, C10 2 10µF, 16V, X5R, 0603, ceramic capacitor Taiyo Yuden EMK107BBJ106MAL C11, C15 2 0.1µF, 16V or higher, X5R, 0402, ceramic capacitor Taiyo Yuden EMK105BJ104MP C16 1 N.C. C17 1 10nF, 6.3V or higher, X5R, 0402 Taiyo Yuden TMK105BJ103MP L1 1 0.47µH, 2016, TOKO DFE201610P-H-R47M 1µH, 2520, TOKO, DFE252012C 1239AS-H-1R0M CON1 1 2x 10 right-angle female receptacle VBUS, CHGIN, WCIN, VSYS, BATT, BATTGND, CHGPG, GND
11 MAXIM LOOP
DESIGNATION QTY DESCRIPTION BYPS, ENB, VBUS_DET, SYSS, BATTS, SCL, SDA, INOKB, INTB, WCINOKB, SAFEOUT1, SAFEOUT2, TP1, CHGINS, WCINS, CHGPGS, CHGLXS, DETBATB, THM, VIO
20 Test point, small
R1 1 100kΩ, 1%, resistor, 0402 R2, R7 2 10kΩ, 1%, resistor, 0402 R3, R5, R6, R14 4 0Ω, 0402 R12, R13 2 2.2kΩ, 5%, resistor, 0402 R15–R17 3 200kΩ, 5%, resistor, 0402 R9 1 470kΩ, 5%, resistor, 0402 R10 1 47kΩ, 5%, resistor, 0402 R4, R11 2 N.C. U1 1 MAX77818EWZ+ 72-bump WLP, 0.4mm pitch U2 1 MAX14681 THM 1 10Ω, 1%, NTC, 0402 JU1 1 Two-pin header JU2–JU11 (socket board only)
10 Two-pin header
J7 1 Micro B receptacle SMD type Panasonic, AXJ53312G
Figure 4. PCB Layout
Figure 5. PCB Layout—Top Layer
Figure 6. PCB Layout—Inner Layer 2
Figure 7. PCB Layout—Inner Layer 3
Figure 8. PCB Layout—Bottom Layer
Figure 9. PCB Layout—Assembly Top
Maxim Integrated │ 12 www.maximintegrated.com Evaluates: MAX77818MAX77818 EV System #Denotes RoHS compliant.
Ordering Information
MAX77818EVSYS# EV System
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2016 Maxim Integrated Products, Inc. │ 13 Evaluates: MAX77818MAX77818 EV System
Revision History
0 6/15 Initial release — 1 8/16 Updated m5 designation, Detailed Description of Software, Figure 3, and Ordering Information 1, 2, 4, 12 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.