ANALOG DEVICES MAX77972 Evaluation Board User Guide

ANALOG DEVICES MAX77972 Evaluation Board

General Description

The MAX77972 evaluation kit (EV kit) is a fully assembled and tested surface- mount Printed Circuit Board (PCB) that evaluates the autonomous integrated FET charger with an integrated fuel gauge, Universal Serial Bus (USB) Type-C, and BC1.2 detection.

The EV kit includes the IC evaluation board with an integrated I2C interface and USB micro-B cable. Windows® based graphical user interface (GUI) software is available for use with the EV kit and can be downloaded from the https://www.analog.com/products/MAX77972 product page under the Design Resources tab. Windows 7 or newer Windows operating system is required to use with the EV kit GUI software.

MAX77972 EV Kit File

Features

• Stand-Alone AccuCharge™ Buck Charger
• 13.7V Input Operating Voltage, up to 16V protection
• I2C or Resistor Configured Fast Charge Current 100mA to 3150mA
• I2C or Resistor Configured Charge Termination Voltage 3.45V to 4.5V
• ModelGauge m5 EZ Algorithm
• Percent, Capacity, Time-to-Empty/Full, Age
• Cycle+™ Age Forecast
• Full Protection Solution On-Board for Evaluation
• Precision Measurement Without Calibration
• On-Board I2C Communication Interface with Built-In MAXUSB Interface
• Integrated USB Detection
• Windows 7 or Newer Compatible Software
• Proven PCB Layout
• Fully Assembled and Tested

Ordering Information appears at end of data sheet.

MAX77972 EV Kit Photo

Quick Start

Required Equipment

• MAX77972 Evaluation kit
• Lithium-ion/Polymer cell/Battery simulator
• Voltage source/Power supply
• Load circuit
• USB Micro-B cable
• PC with Windows 7 or newer Windows OS and USB port.

Procedure

Follow the steps to install the EV kit software, make the required hardware connections, and start operating the kits. The EV kit software can be launched without the hardware attached. When connections are made, it automatically recognizes the hardware. Note that after communication is established with the IC, it must be configured correctly for proper operation.

1. Visit the https://www.analog.com/products/MAX77972 page under the Design Resources tab to download the latest version of the MAX77972 EV kit software. Save the EV kit software to a temporary folder and unpack the ZIP file.
2. Install the EV kit software on the computer by running the MAX77972GUISetupX.X.X.exe program inside the temporary folder. This copies the program files and creates an icon in the Windows Start menu. The software requires the .NET Framework 4.5 or later. If connected to the internet, Windows automatically updates the .NET Framework as needed.
3. Follow the prompts to complete the installation. The evaluation software can be uninstalled in the Add/Remove Programs tool in the Control Panel.
4. The EV kit software launches automatically after installation, or alternatively, it can be launched by clicking on its icon in the Windows Start menu.
5. Make connections to the EV kit board based on Figure 1. The cell connects between the BATT/ BATTN pads. The charger or power supply can be connected between the CHGIN and GND pads at this time as well.
6. Connect the EV kit to a USB port on the PC using the USB cable. The GUI software establishes communication automatically. If the USB port is not powered through the USB cable, connect Pin 3 and Pin 4 of the J5 to avoid falsely entering ship mode.
7. At startup, the IC defaults to EZ Configuration. If a custom .INI file for the application is available, it should be loaded at this time.
8. To begin charging, connect a source at CHGIN/GND, and connect Pin 2 of J8 to Pin 1/Pin 3. The MAX77972 regulates the voltage and current based on the settings in the Charging Configuration.
9. To begin discharging, first disconnect the adapter or remove the power source from the CHGIN/GND. Then, connect a resistor or an E-Load on SYS/SYSN to begin discharging the battery.
10. If the USB cable is not connected from step#5 to the CHGEN pin, connect Pin 1 and Pin 2 to pull up the CHGEN to SYS or supply a separate 3.3V to the CHGEN pin. This will prevent the charging feature from being disabled.
    

Setup and Operation

The MAX77972 offers flexibility in power connections. See Table 2 for a detailed description.

Table 1. Power Options

and BATTN.
Connector J7| Connect 1-Cell Li+ battery with JST-PH-2P to connector J7.
Charger Input| CHGIN/GND| Connect external DC power supply to CHGIN and GND.
USB Type C connector J1| Connect the USB Type C cable with an external source to connector J1.
USB Micro B connector J2| Connect the USB Micro B cable with an external source to connector J2.
USB A connector J4| Connect the USB A cable with an external source to connector J4.

Detailed Description of Hardware

The MAX77972 EV kit board provides various features that highlight the functionality of the IC. The following sections detail the most important aspects of the EV kit board.

Table 2. Jumper Connection Guide

nChgConfig4.DATAMUX = 0x1. 3-4: Pull up DATAMUX through a 2.2kΩ resistor to SYS.
Only valid when nChgConfig4.DATAMUX = 0x0.
5-6: Pull up DATAMUX through a 2.2kΩ resistor to 3.3V from Micro-USB J3. Only valid when nChgConfig4.DATAMUX = 0x0
J6| Uninstalled| Connects to: INOKB STAT SCL SDA DATAMUX CHGEN GND
J8| 2-3| 1-2: Connects CHGEN to SYS voltage.
2-3: Connects CHGEN to 3P3V from I2C Communication USB Micro-B connector.
J9| Uninstalled| Connects different resistors to configure desired charging current.
J10| Uninstalled| Connects different resistors to configure desired charge termination voltage.
J11| 1-2| Connects to SCL from Micro USB J3.
J12| 1-2| Connects to SDA from Micro USB J3.

Communication Connections

The USB interface J3 on the PCB establishes I2C communication between the IC and the software GUI interface. When developing application code separately, connections to the communication lines can be made directly to the board’s SDA and SCL pins. When not using the built-in MAXUSB interface, the user must apply the appropriate external pullup resistors to the communication lines.

External I2C Interface

J6-3 and J6-4 are header pins that can be used to interface the MAX77972 I2C interface to a custom board or to interface a custom I2C controller to the MAX77972 on the EV kit. To interface to the MAX77972 IC on another PCB using www.analog.com the MAXUSB and EV kit GUI, use the USB Micro-B connector. To connect to a different I2C controller, use the pins J6-3/J6-4/J6-7 for the SCL/SDA/GND. An external pullup must be supplied on SDA and SCL when interfacing with a different controller.

Sense Resistor Options
The MAX77972 uses an internal sense resistor by default configuration. All EV kit boards are shipped with a 10mΩ 0805- size chip sense resistor installed and shorted with a copper pad. Oversized land pattern pads allow different sizes of sense resistors to be used if desired.

External Thermistor/Battery ID
The MAX77972 can be configured to use temperature measurements from an external thermistor. All EV kit boards have thermistors installed as surface- mount components R33, close to the battery cell.

Optional Data Mux
The MAX77972 EV kit equips an optional data mux that allows the MAX77972 to automatically borrow DP/DN data lines in case it is sharing them with an external device. Connect J5 1-2 on the MAX77972 EV kit to enable data mux. When a valid USB charging cable is inserted, and a valid power source is present, the data mux toggles output based on the USB selection.

Pushbutton Reset/Ship Mode (DATAMUX)
The MAX77972 DATAMUX pin can also be used to reset SYS power or enter ship mode. Connect J5 2-3 MAX77972 EV kit to disable USB data mux features and enable control of SYS power cycle or ship mode. Hold SW2 low to pull the DATAMUX pin of MAX77972 low. Holding SW2 for 6s cycles SYS power and holding SW2 for 12s to enter ship mode. When MAX77972 is in ship mode, with valid CHGIN voltage, hold SW2 low for 1s to exit ship mode. Charge Voltage

Options Configuration Resistors
Connecting J10 allows the selection of charge voltage options. See Table 3 for a detailed connection guide.

Table 3. Charge Voltage Options

Charge Current Options Configuration Resistors
Connecting J9 allows the selection of charge current options. See Table 4 for a detailed connection guide.

Table 4. Charge Current Options

EV Kit Package

This package contains useful documentation and links that serve as a guide for evaluation and development. The package includes examples and basic C code drivers. For further information, refer to the MAX77972 EV kit software user’s guide.

Detailed Description of Software

The MAX77972 EV kit software gives the user complete control of all MAX77972 functions and the ability to load a custom model into the IC. Separate control tabs allow the user access to view real-time updates of all monitored parameters. The software also incorporates a data-logging feature to monitor a cell over time.

After the installation is complete, open the Program Files (x86)\Maxim Integrated\MAX77972 folder and run MAX77972.exe or select it from the Program menu. Figure 2 shows a splash screen containing information about the EV kit that appears as the program is being loaded.

Figure 2. Splash Screen

Communication Port

The EV kit software needs to connect with the EV kit manually by clicking the Connect button on the left-hand side of the extra menu section shown in Figure 3. If the EV kit cannot be found, an I/O Error message box is displayed. If the EV Kit is found, then click the Read and Close button at the bottom of the displayed Synchronize window. Figure 4 shows that if the communication is valid, Connected is displayed on the right-bottom corner of the EV kit software.

Figure 3. Window of MAX77972 Software Connection

Figure 4. MAX77972 Software Main Window

Charger Section

All functions of the charger are distributed under various tabs in the Charger section. Click on the appropriate tab to move to the desired function page.

Interrupts/Status Tab

All the charger interrupts and statuses are displayed in the Interrupts/Status tab.

• The Charger Interrupts group box displays the status of each interrupt. Each interrupt can be cleared manually in this group box.
• The status of each mask for each interrupt is displayed in the Charger Interrupts Mask group box. Each mask can be enabled or disabled in this group box.
• The Charger Status group box displays the main information of the charger. This group box is read-only.

Chg/USB Details Tab

All the detailed information of the charger is displayed in the Details tab. All the group boxes in this tab are read-only.

• The Charger Details 0 group box displays the detailed information of the CHGIN pin.
• The Charger Details 1 group box displays detailed information about the charger, the battery, and the temperature regulation.
• The Charger Details 2 group box displays the detailed information of the Bypass Node.
• The USB Details 0 group box displays the USB input current limit, the detected constant current capability, the detected type of proprietary adaptor, and the detection of the BC1.2 standard adaptor.

Chg Config 0-2 Tab
The charger features can be configured in the Configuration 0-2 tab, which includes the Watchdog Timer, the Top Off state, the minimum system regulation voltage, overcurrent protection denounce time, etc.

Chg/USB Config 3-5 Tab

The charger and USB features can be configured in the Configuration 3-5 tab, which includes the CHGIN Current Limit, VByp target voltage, BC1.2 detection, Charger detection, DeepShip mode, CC pin detection, etc.

JEITA

The JEITA tab provides information on the step charging and the temperature zones.

• The Step Charging Mode group box displays the current temperature zone, discharging status or charging step. The JEITA step charging mode can be modified in this group box.
• The JEITA Region 0 group box shows the current setting of the room and cold temperature zones for step charging. Temperature zones can be modified in this group box.
• The JEITA Region 1 group box shows the current setting of the warm and hot temperature zones for step charging. Temperature zones can be modified in this group box.

Charging Voltage

The Charging Voltage tab provides information on the current JEITA step charging voltage setting. The charging voltage can be modified in this tab.

• The Charging Voltage group box displays the current charge voltage of the (Constant Voltage) CV state.
• The charge voltage of the CV state under different temperature zones can be modified in the Charge Voltage (Temperature Zones) group box.
• The charge voltage for each charging step can be modified in the Step-Charging Voltage group box.
• The result charge voltage for each charging step under each temperature zone is displayed in the Step-Charging Voltage (Warm/Hot1/Hot2/Cool/Cold1/Cold2).

Charging Current

The Charging Current tab provides information on the current JEITA step charging current setting. The charging current can be modified in this tab.

• The Charging Current group box displays the current charge voltage of the Constant Current (CC) state.
• The charge current of the CC state under different temperature zones can be modified in the Charge Current (Temperature Zones) group box.
• The charge current for each charging step can be modified in the Step-Charging Current group box.
• The result charge current for each charging step under each temperature zone is displayed in the Step-Charging Current (Warm/Hot1/Hot2/Cool/Cold1/Cold2).

ModelGauge Section

All functions of the fuel gauge are distributed under various tabs in the ModelGauge section. Click on the appropriate tab to move to the desired function page.

Figure 5 shows an extra function bar in the ModelGauge section that can be used to constantly read the fuel gauge registers by using the Read button and Every check box and log the registers to a file by checking the Log check box, which can be saved as an excel file to a specified folder by pressing the Save button.

Figure 5. Log Feature Function Bar

Custom Model

The Custom Model tab provides the model loading feature with a custom INI file. Pressing the Load button inside the group box to select a custom INI file, then programming starts automatically. If the loading process is successful, the custom parameters, including its Device, Register Address, Name, Hexadecimal(hex) value, translated Decimal Meaning, and Description of the register, are displayed in the group box after the programming is finished. A green status bar is also displayed under the group box if the fuel gauge successfully loaded the custom model shown in Figure 6.

Figure 6. Custom INI Loading Tab

Chart

Figure 7 shows the format of the Chart Tab. Graph information is grouped into two categories: VCell/Average Current and RepSOC/Temp. The software begins plotting after checking the Every box and pressing the Read button. The graph visible viewing area can be adjusted from 1 second to 27 hours. The plot can be zoomed in by scrolling the mouse wheel up and zoomed out by scrolling the mouse wheel down.

Figure 7. Chart Tab

Status

Figure 8 shows the format of the Status tab. This is similar to the Custom Model tab, and it also shows the bit fields of each status-related register. The battery status and the alerts’ status are displayed in the Status group box. Alerts can be cleared by double-clicking or right-clicking the corresponding bit field. The Max Min Temp, MaxMinCurr, and MaxMinVolt group boxes display the maximum and minimum values of the temperature, current, and voltage after the battery is detected.

Figure 8. Status Tab

Configuration

Figure 9 shows the format of the Configuration tab, which is the same with the Status tab. It contained several key fuel gauge configuration registers, which included the cell relaxation, hibernate mode, alert, servo mixing algorithm, and fuel gauge learning feature configurations. The bit fields of each configuration register can be modified separately.

Figure 9. Configuration Tab

Alerts

The Alerts tab has the same format as the Configuration tab. The upper and lower threshold of voltage, temperature, SOC and current alert thresholds can be modified separately in this tab.

All Registers

The All Registers tab has the same format as the Custom Model tab shown in Figure 10. Scrolling the tab up and down to view the registers. Each register displayed in this tab can be modified separately by double clicking or right clicking the register.

Figure 10. All Registers Tab

All NVM Registers

The All NVM Registers tab has the same format as the All Registers tab. Scroll the tab up and down to view the registers. Each register displayed in this tab can be modified separately by double-clicking or right-clicking the register.

GUI Setting

Inside the GUI Setting tab, the external sense resistor value can be selected in the Model Configurations group box, and displays the task period for the MAX77972 firmware running once. The standard register resolutions calculated from the selected sense resistor value are displayed in the Data Registers Unit/LSB group box. The Chart Properties group box shows the resolution of the time axis.

Ordering Information

#Denotes RoHS-compliant.

MAX77972 EV Kit Bill of Materials

ITEM| REF_DES| QTY| MFG PART #| VALUE| DESCRIPTION
---|---|---|---|---|---
1| 3P3V, ALRT, BATTS, BYPS, CC1, CC2, CHGEN, CHGINS, DATAMUX, DN, DNCHG, DP, DPCHG, GND1S, GNDS, ICHG, INOKB, PVL, SCL, SDA, STAT, SYSS, THM, VCHG, VDD| 25| 5000| N/A| TEST POINT; PIN DIA=0.1IN; TOTAL LENGTH=0.3IN; BOARD HOLE=0.04IN; RED; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
2| BATT, BATTN, BYP, CHGIN, GND2-GND5, SYS, SYSN| 10| 9020 BUSS| MAXIMPAD| EVK KIT PARTS; MAXIM PAD; WIRE; NATURAL; SOLID; WEICO WIRE; SOFT DRAWN BUS TYPE-S; 20AWG
3| C1, C8| 2| C1005X5R1A225K050BC| 2.2UF| CAP; SMT (0402); 2.2UF; 10%; 10V; X5R; CERAMIC
4| C2| 1| EMK105ABJ225MV; GRM155R61C225ME11| 2.2UF| CAP; SMT (0402); 2.2UF; 20%; 16V; X5R; CERAMIC
5| C3| 1| ANY| 22UF| CAPACITOR; SMT (0805); CERAMIC CHIP; 22UF; 16V; TOL=10%; MODEL=C SERIES; TG=-55 DEGC TO +85 DEGC; TC=X5R; FORMFACTOR
6| C4| 1| GRM155R61C104KA88| 0.1UF| CAP; SMT (0402); 0.1UF; 10%; 16V; X5R; CERAMIC
7| C5, C7, C9| 3| C1608X5R1A106K080AC| 10UF| CAP; SMT (0603); 10UF; 10%; 10V; X5R; CERAMIC
8| C10, C13| 2| C0402C0G500270JNP; GRM1555C1H270JA01| 27PF| CAP; SMT (0402); 27PF; 5%; 50V; C0G; CERAMIC
9| C11,C17, C19| 3| ZRB15XR61A475ME01; CL05A475MP5NRN; GRM155R61A475MEAA; C1005X5R1A475M050BC| 4.7UF| CAP; SMT (0402); 4.7UF; 20%; 10V; X5R; CERAMIC
10| C12, C14-C16, C18, C20-C26, C32| 13| GRM155R71A104JA01| 0.1UF| CAP; SMT (0402); 0.1UF; 5%; 10V; X7R; CERAMIC
11| C27-C31, C34| 6| C0402C105K8PAC; CC0402KRX5R6BB105| 1UF| CAP; SMT (0402); 1UF; 10%; 10V; X5R; CERAMIC
12| C33| 1| TMK105BJ105MV| 1UF| CAP; SMT (0402); 1UF; 20%; 25V; X5R; CERAMIC
13| C35| 1| ZRB157R61A225KE11; GRM155R61A225KE95; CL05A225KP5NSN; GRM155R61A225KE01| 2.2UF| CAP; SMT (0402); 2.2UF; 10%; 10V; X5R; CERAMIC
14| D2, D3| 2| RB751S40| RB751S40| DIODE; SCH; SMT (SOD-523F); PIV=40V; IF=0.03A
15| DS1, DS2, DS4| 3| LTST-C190GKT| LTST-C190GKT| DIODE; LED; WATER CLEAR GREEN; SMT (0603); VF=2.1V; IF=0.03A; -55 DEGC TO +85 DEGC
16| DS3, DS7| 2| LTST-C190YKT| LTST-C190YKT| DIODE; LED; STANDARD; YELLOW; SMT (0603); PIV=5.0V; IF=0.02A; -55 DEGC TO +85 DEGC
17| DS5| 1| LTST-C191TBKT| LTST-C191TBKT| DIODE; LED; ; SMT (0603); PIV=5V; IF=0.02A; BLUE
18| J1| 1| 12401598E4#2A| 12401598E4#2A| CONNECTOR; FEMALE; THROUGH HOLE; USB 3.1; GEN2; TYPE C RECEPTACLE; RIGHT ANGLE; 24PINS
19| J2, J3| 2| 10118193-0001LF| 10118193- 0001LF| CONNECTOR; FEMALE; SMT; MICRO USB B TYPE RECEPTACLE; RIGHT ANGLE; 5PINS
---|---|---|---|---|---
20| J4| 1| 87520-0010BLF| 87520-0010BLF| CONNECTOR; FEMALE; THROUGH HOLE; USB RECEPTACLE; RIGHT ANGLE; 4PINS
21| J5| 1| PBC03DAAN| PBC03DAAN| CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 6PINS; -65 DEGC TO +125 DEGC
22| J6| 1| PEC07SAAN| PEC07SAAN| CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 7PINS; -65 DEGC TO +125 DEGC
23| J7| 1| S2B-PH-K-S(LF)(SN)| S2B-PH-K- S(LF)(SN)| CONNECTOR; MALE; THROUGH HOLE; 2.0MM PITCH; DISCONNECTABLE CRIMP STYLE CONNECTOR; SIDE ENTRY TYPE; RIGHT ANGLE; 2PINS
24| J8| 1| TSW-103-07-T-S| TSW-103-07-T-S| CONNECTOR; THROUGH HOLE; TSW SERIES; SINGLE ROW; STRAIGHT; 3PINS
25| J9, J10| 2| PBC05DAAN| PBC05DAAN| CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 10PINS; -65 DEGC TO +125 DEGC
26| J11, J12| 2| PBC02SAAN| PBC02SAAN| CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 2PINS
27| L1| 1| HTGH25201T-R47MSR-68| HTGH25201T- R47MSR-68| EVKIT PART – INDUCTOR; SMT (2520); POWER CHOKE COIL; TOL=+/-20%; 5.6A
28| L2-L4| 3| BLM18AG601SN1| 600| INDUCTOR; SMT (0603); FERRITE-BEAD; 600; TOL=+/-; 0.5A
29| MH1-MH4| 4| 9032| 9032| MACHINE FABRICATED; ROUND-THRU HOLE SPACER; NO THREAD; M3.5; 5/8IN; NYLON
30| MISC1| 1| AK67421-2| AK67421-2| CABLE; MALE; USB; USB2.0 MICRO CONNECTION CABLE; USB B MICRO MALE TO USB A MALE; 2000 MILLIMETERS; 5PINS-4PINS
31| Q1| 1| BSS223PW| BSS223PW| TRAN; OPTIMOS SMALL-SIGNAL-TRANSISTOR; PCH; SOT323-3; PD-(0.25W); I-(-0.39A); V-(-20V)
32| R1, R2| 2| RC0402FR-0727RL| 27| RES; SMT (0402); 27; 1%; +/-100PPM/DEGC; 0.0630W
33| R3, R12, R13, R15, R21, R24, R34, R37-R39, R41, R51-R54, R56| 16| ERJ- 2GE0R00| 0| RES; SMT (0402); 0; JUMPER; JUMPER; 0.1000W
34| R4| 1| CR0402-16W-4421FT; D1004020B4421F| 4.42K| RES; SMT (0402); 4.42K; 1%; +/-100PPM/DEGC; 0.0630W
35| R5, R6, R11, R35| 4| CRCW0402470RFK| 470| RES; SMT (0402); 470; 1%; +/-100PPM/DEGC; 0.0630W
36| R7| 1| CRCW040212K0FK; MCR01MZPF1202| 12K| RES; SMT (0402); 12K; 1%; +/-100PPM/DEGC; 0.0630W
37| R8| 1| CRCW04021M00FK| 1M| RES; SMT (0402); 1M; 1%; +/-100PPM/DEGC; 0.0630W
38| R9| 1| RC0402FR-071KL; MCR01MZPF1001| 1K| RES; SMT (0402); 1K; 1%; +/-100PPM/DEGC; 0.0630W
---|---|---|---|---|---
39| R10| 1| CRCW04023K40FK| 3.4k| RES; SMT (0402); 3.4K; 1%; +/-100PPM/DEGC; 0.0630W
40| R14, R27, R30, R55, R59| 5| CRCW04022K20JN| 2.2K| RES; SMT (0402); 2.2K; 5%; +/-200PPM/DEGK; 0.0630W
41| R17, R18| 2| CRCW04024K70FK; MCR01MZPF4701| 4.7K| RES; SMT (0402); 4.7K; 1%; +/-100PPM/DEGC; 0.0630W
42| R19, R22, R48| 3| CRCW0402169KFK| 169K| RES; SMT (0402); 169K; 1%; +/-100PPM/DEGK; 0.0630W
43| R20, R23, R47| 3| CRCW0402100KFK; RC0402FR-07100KL| 100K| RES; SMT (0402); 100K; 1%; +/-100PPM/DEGC; 0.0630W
44| R26| 1| CRCW0402270RFK| 270| RES; SMT (0402); 270; 1%; +/-100PPM/DEGC; 0.0630W
45| R28| 1| CRCW0402976RFK| 976| RES; SMT (0402); 976; 1%; +/-100PPM/DEGC; 0.0630W
46| R29| 1| ERJ-2RKF5760| 576| RES; SMT (0402); 576; 1%; +/-100PPM/DEGC; 0.1000W
47| R31| 1| CRCW040275R0FK| 75| RES; SMT (0402); 75; 1%; +/-100PPM/DEGC; 0.0630W
48| R33| 1| NCP15XH103F03RC| 10K| THERMISTOR; SMT (0402); THICK FILM (NICKEL PLATED); 10K; TOL=+/-1%;
49| R36| 1| PF0603FRE7T0R01Z| 0.01| RES; SMT (0603); 0.01; 1%; +/-50PPM/DEGC; 0.3300W
50| R42| 1| CRCW04026K34FK| 6.34K| RES; SMT (0402); 6.34K; 1%; +/-100PPM/DEGK; 0.0630W
51| R43| 1| CRCW04023K83FK| 3.83K| RES; SMT (0402); 3.83K; 1%; +/-100PPM/DEGC; 0.0630W
52| R44| 1| CRCW04021K21FK| 1.21K| RES; SMT (0402); 1.21K; 1%; +/-100PPM/DEGK; 0.0630W
53| R46| 1| ERA-2AEB2611| 2.61K| RES; SMT (0402); 2.61K; 0.1%; +/-100PPM/DEGC; 0.0630W
54| R49, R58| 2| RC0402FR-0710KL; CR0402-FX-1002GLF| 10K| RES; SMT (0402); 10K; 1%; +/-100PPM/DEGC; 0.0630W
55| R50| 1| CRCW040210M0FK| 10M| RES; SMT (0402); 10M; 1%; +/-100PPM/DEGC; 0.0630W
56| SW2| 1| EVQ-Q2K03W| EVQ-Q2K03W| SWITCH; SPST; SMT; 15V; 0.02A; LIGHT TOUCH SWITCH; RCOIL= OHM; RINSULATION= OHM; PANASONIC
57| U1| 1| MAX77972EWX+| MAX77972EWX +| EVKIT PART – IC; CHGR; 3A STANDALONE CHARGER WITH FUEL GAUGE AND USB-C DETECTION; WLP36
58| U2| 1| FT2232HL| FT2232HL| IC; MMRY; DUAL HIGH SPEED USB TO MULTIPURPOSE UART/FIFO; LQFP64
59| U3| 1| MAX14611ETD+| MAX14611ETD+| IC; TRANS; QUAD BIDIRECTIONAL LOW- VOLTAGE LOGIC LEVEL TRANSLATOR; TDFN14-EP
---|---|---|---|---|---
60| U4| 1| MAX20334EWC+| MAX20334EWC+| EVKIT PART-IC; ASW; OVERVOLTAGE AND SURGE-PROTECTED; DUAL SPDT DATA LINE SWITCH; PACKAGE OUTLINE DRAWING: 21- 100286; PACKAGE CODE: W121C1+1; WLP12
61| U5, U6| 2| MAX8512EXK+| MAX8512EXK| IC, VREG, Ultra-Low-Noise, High PSRR, Adjustable Vout, SC70-5
62| U7| 1| MAX1616EUK+| MAX1616EUK| IC, VREG; HIGH-VOLTAGE; LOW-POWER LINEAR REGULATOR, SOT23-5
63| Y1| 1| 7M-12.000MAAJ| 12MHZ| CRYSTAL; SMT; 12MHZ; 18PF; TOL = +/-30PPM; STABILITY = +/-30PPM
64| PCB| 1| MAX77972| PCB| PCB:MAX77972
65| EV_KIT_BOX1| 6| NPC02SXON-RC| | CONNECTOR; FEMALE; MINI SHUNT; 0.100IN CC; OPEN TOP; JUMPER; STRAIGHT; 2PINS
66| R32, R45| 4| 0667-0-15-01-30-27-10-0| N/A| PIN RECEPTACLE; PIN DIA=0.025IN; TOTAL LENGTH=0.161IN; BOARD HOLE=0.057IN; GOLD OVER NICKEL PLATE FINISH
6| R32, R45| 0| N/A| OPEN| RES; THROUGH HOLE-RADIAL LEAD; OPEN; N/A; N/A; N/A
68| R57| 0| N/A| OPEN| RESISTOR; 0402; OPEN; FORMFACTOR
69| C6| 0| N/A| OPEN| CAPACITOR; SMT (0603); OPEN; FORMFACTOR

MAX77972 EV Kit Schematic

MAX77972 Charger Part

MAXUSB, USB to I2C Translator

MAX77972 EV Kit PCB Layout

• MAX77972 EV Kit Component Placement Guide—Top Silkscreen
  

• MAX77972 EV Kit PCB Layout—Layer 2
  

• MAX77972 EV Kit PCB Layout—Top View
  

• MAX77972 EV Kit PCB Layout—Layer 3
  

• MAX77972 EV Kit PCB Layout—Bottom View
  

• MAX77972 EV Kit Component Placement Guide—Bottom Silkscreen
  

ASSUMED BY ANALOG DEVICES FOR ITS USE, NOR FOR ANY INFRINGEMENTS OF PATENTS OR OTHER RIGHTS OF THIRD PARTIES THAT MAY RESULT FROM ITS USE. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE. NO LICENCE, EITHER EXPRESSED OR IMPLIED, IS GRANTED UNDER ANY ADI PATENT RIGHT, COPYRIGHT, MASK WORK RIGHT, OR ANY OTHER ADI INTELLECTUAL PROPERTY RIGHT RELATING TO ANY COMBINATION, MACHINE, OR PROCESS WHICH ADI PRODUCTS ALL INFORMATION CONTAINED HEREIN IS PROVIDED “AS IS” WITHOUT REPRESENTATION OR WARRANTY. NO RESPONSIBILITY IS OR SERVICES ARE USED. TRADEMARKS AND REGISTERED TRADEMARKS ARE THE PROPERTY OF THEIR RESPECTIVE OWNERS.

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References

• Mixed-signal and digital signal processing ICs | Analog Devices
• Document Feedback Form | Analog Devices
• Mixed-signal and digital signal processing ICs | Analog Devices

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