Datasheet > MAX77840

MAX77840

更新时间： 2024-09-16 14:58:11

品牌	Logo	应用领域
亚德诺 - ADI		电池仪表
页数	文件大小	规格书
96页	923K
描述
3A降压充电器，具备ModelGauge m5电池电量计和USB BC1.2检测

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MAX77840 数据手册

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MAX77840

3A Buck Charger with ModelGauge m5 Fuel

Gauge and USB BC1.2 Detection

General Description

Benefits and Features

The MAX77840 is a 3.15A switched-mode charger and

ModelGauge™ m5 fuel gauge with integrated USB BC1.2

detection for Li-ion batteries and a SAFEOUT LDO.

● Single-Input Switch Mode Charger

● Up to 16V Protection

• Up to 13.4V Input Operating Range

• Up to 4.0A Input Current Limit with Adaptive Input

Current Limiting (AICL)

• Up to 3.15A Battery Charging Current Limit

• CC, CV, and Die Temperature Control

• Small Inductor: 0.47µH or 1µH Package

• High Efficiency

The charger integrates all switches and operates at either

4MHz or 2MHz (programmable) switching frequency, al-

lowing selection of the smallest external components or

achieving lowest heat dissipation. The MAX77840 is ideal-

ly suited for devices such as mobile point-of-sale devices,

portable medical electronics, or other handheld devices.

It includes the USB BC1.2 detection function to recognize

common USB adapters and set the input current limit au-

tomatically. The MAX77840 can supply up to 1.5A OTG

current with proprietary MAXOTG protection, that limits

the OTG output current to prevent system voltage from

collapsing under heavy OTG loads.

● Supports USB-OTG Reverse Boost, up to 1.5A

Current Limit (Programmable)

● Integrated Battery True-Disconnect FET

• R

= 12.8mΩ

DS(ON)

• Rated Up to 9A

, Discharge Current Limit

RMS

(Programmable, default 4.5A)

The ModelGauge m5 provides accurate battery fuel gaug-

ing and operates with extremely low battery current (25µA,

typ) during standby or sleep mode to extend battery life.

The interaction between the ModelGauge m5 and the

charger provides end users a superior charging experi-

ence in a single IC.

● Adapter Type Detection

• D+/D- Detection for USB port, USB DCP, and USB

HVDCP

• BC 1.2 Compliant

● ModelGauge m5 Battery Fuel Gauge

• ±1% SOC Accuracy, No Calibration Cycles, Very

Shipping mode is built into the MAX77840 to minimize bat-

tery drain when the device is not in use. The MAX77840

features an I C 3.0 compatible serial interface. It is offered

in a 3.87mm x 3.96mm, 9 x 9 bump array wafer-level pack-

age (WLP) with 0.4mm pitch.

Low I

• Time-to-Empty and Time-to-Full Prediction

● One Safeout LDO

● Control Functions

• Shipping Mode with ONKEY Pressing Clear

• True Hardware Reset with ONKEY

Applications

● Industrial PCs

● Portable Medical Devices

● Mobile Point-of-Sale Devices

● Wireless Speakers

● I C 3.0 Compatible Interface with Interrupt Output

● 3.87mm x 3.96mm, 9 x 9 Array WLP with 0.4mm Pitch

Ordering Information appears at end of data sheet.

● E-Cigarettes

● Smart Home Automation, Sensors

● Internet of Things (IoT)

ModelGauge is a trademark of Maxim Integrated Products, Inc.

Smart Power Selector is a trademark of Maxim Integrated Products, Inc.

Cycle+ is a trademark of Maxim Integrated Products, Inc.

19-7702; Rev 0; 7/21

12 3 4 5 6 7...96

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与MAX77840相关器件

型号	品牌	获取价格	描述	数据表
MAX77847	ADI	获取价格	5.5V 输入、4.5A 开关电流高效升降压转换器
MAX77857	ADI	获取价格	2.5V至16V输入、7A开关电流高效降压-升压转换器
MAX77859	ADI	获取价格	2.5V to 22V Input, 7.8A Switching Current High-Efficiency Buck-Boost Converter for USB-PD/
MAX77860	ADI	获取价格	USB Type-C、3A、开关模式Buck充电器，具有集成CC检测、反向升压和ADC
MAX77860EWG+	MAXIM	获取价格	Power Supply Management Circuit,
MAX77860EWG+T	MAXIM	获取价格	Power Supply Management Circuit,
MAX77863	MAXIM	获取价格	Complete System PMIC, Featuring 13 Regulators, 8 GPIOs, RTC, and Flexible Power Sequencing
MAX77863	ADI	获取价格	完备的系统PMIC，具有13个调节器、8路GPIO、RTCD和灵活电源排序，适用于多核心应
MAX77863AEWJ	MAXIM	获取价格	Complete System PMIC, Featuring 13 Regulators, 8 GPIOs, RTC, and Flexible Power Sequencing
MAX77863AEWJT	MAXIM	获取价格	Complete System PMIC, Featuring 13 Regulators, 8 GPIOs, RTC, and Flexible Power Sequencing

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