MAX77972
AccuCharge + ModelGauge 1-Cell Fuel Gauge and 3A Charger with Integrated USB Type-C Detection
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Industry’s Highest Accuracy Fuel Gauge integrated with USB-C Charger
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特性
- 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 3.4V to 4.66V
- I2C Programmable JEITA zones – 9 Automatic Temperature Charge Control Region
- Prequal and Step-Charging Options
- Fuel Gauge-Assisted Charge Termination
- 6A Peak Discharge Current
- OTG/Reverse Boost up to 5.1V, 1.5A
- Adaptive Input Current Limit (AICL)
- ModelGauge™ m5 EZ Algorithm
- Percent, Capacity, Age
- Cycle+™
- Precision Measurement Without Calibration
- Current, Voltage, Time, Cycles
- Die Temperature and Thermistors
- Integrated USB Detection
- CC Detection for USB Type-C
- BC1.2 Detection for Legacy SDP, DCP, and CDP
- Automatic Input Current Limit Configuration
- OCV Keep-Out Region for Special Chemistry Cell
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The MAX77972 is an autonomous integrated FET charger with integrated fuel gauge, Universal Serial Bus (USB) Type-C and BC1.2 detection. The MAX77972 supports 4.5V to 13.7V inputs and up to 3.15A of charging current. Charge current and voltage are I2C and pin-configurable using resistors. The IC supports USB On-The-Go (OTG) reverse boost and includes a Smart Power Selector™ (SPS), which is best for using limited adapter and battery power.
The fuel gauge uses the ModelGauge™ m5 algorithm, which provides industry-leading accuracy by combining the short-term accuracy and linearity of a coulomb counter with the long-term stability of a voltage-based fuel gauge. ModelGauge m5 automatically compensates for cell aging, temperature, and discharge rate and provides accurate state-of-charge (SOC) over a wide range of operating conditions.
Charging is coordinated with the fuel gauge to provide 9-temperature-region JEITA charge control as well as step-charging. Other protection features include junction thermal regulation, over/under voltage protection, and short circuit protection.
The USB Type-C Configuration Channel (CC) detection pins on the MAX77972 enable automatic USB Type-C power source detection and input current limit configuration. To support a variety of legacy USB types as well as proprietary adapters, the IC also integrates BC1.2 detection using the D+ and D- pins. The IC runs the CC pin and BC1.2 detection automatically as soon as a USB plug is inserted without any software control.
The IC is available in a lead-free 3.208mm x 3.258mm 36-bump 0.5mm pitch Wafer-level packaging (WLP) package.
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MAX77972
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ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许，也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。
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| 产品型号 | 引脚/封装图-中文版 | 文档 | CAD 符号，脚注和 3D模型 |
|---|---|---|---|
| MAX77972EWX+ |
36-WLCSP-N/A
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| MAX77972EWX+T |
36-WLCSP-N/A
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- MAX77972EWX+
- 引脚/封装图-中文版
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36-WLCSP-N/A
- 文档
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD 符号，脚注和 3D模型
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Ultra Librarian
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SamacSys
- MAX77972EWX+T
- 引脚/封装图-中文版
-
36-WLCSP-N/A
- 文档
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD 符号，脚注和 3D模型
-
Ultra Librarian
-
SamacSys
软件和型号相关生态系统
| 部分模型 | 产品周期 | 描述 |
|---|---|---|
|
量产 |
双路输入、电源通路、3A开关模式充电器，带电量计 |
评估套件 1
MAX77972EVKIT
Evaluation Kit for MAX77972
特性和优点
- 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
产品详情
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.
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