电子工程世界电子工程世界电子工程世界

关键词

搜索

型号

搜索

MAX77301EWA-TCDS

产品描述Battery Management Li-Ion Chargers with Smart Power Selector, Adapter Type Detection, USB Enumeration, with Advanced Ba
产品类别半导体    电源管理   
文件大小3MB,共70页
制造商Maxim(美信半导体)
官网地址https://www.maximintegrated.com/en.html
下载文档 详细参数 全文预览

MAX77301EWA-TCDS在线购买

供应商 器件名称 价格 最低购买 库存  
MAX77301EWA-TCDS - - 点击查看 点击购买

MAX77301EWA-TCDS概述

Battery Management Li-Ion Chargers with Smart Power Selector, Adapter Type Detection, USB Enumeration, with Advanced Ba

MAX77301EWA-TCDS规格参数

参数名称属性值
产品种类
Product Category
Battery Management
制造商
Manufacturer
Maxim(美信半导体)

文档预览

下载PDF文档
EVALUATION KIT AVAILABLE
MAX77301
JEITA-Compliant, Li+ Charger with Smart Power
Selector, Automatic Detection, and USB Enumeration
General Description
The MAX77301 is a JEITA-compliant* lithium-ion linear
battery charger that operates from a USB port, a dedi-
cated charger, or universal adapter. The IC provides
automatic adapter-type detection and enumeration with
a USB host or hub. The IC integrates independent bat-
tery charge switch, current sense circuit, MOSFET pass
elements, thermal regulation circuitry, and eliminates the
external reverse-blocking Schottky diode to create the
simplest and smallest USB-compliant charging solution.
The IC includes automated detection of charge adapter
type, making it possible to distinguish USB 2.0 device,
USB charger, dedicated charger devices as well as
standard input adapters. See Table 2. When enumeration
is enabled, the IC automatically negotiates with a USB
host, making it possible to achieve the highest-charging
current available from a USB 2.0 device or USB charger
without processor intervention. The adapter type detec-
tion is compliant with USB 2.0 as well as battery charging
Specification Revision 1.1.
The IC controls the charging sequence for single-cell
Li+ batteries from battery detection, prequalification,
fast charge, top-off, and charge termination. Charging is
controlled using constant current, constant voltage and
constant die-temperature (CCCVCTj) regulation for safe
operation under all conditions. The IC is also compliant
with JEITA battery charging requirements.
The Smart Power Selector feature makes the best use
of limited USB or adapter power. Battery charge current
is set independent of the input current limit. Power not
used by the system charges the battery. The battery
assists the input source when needed. System voltage
is maintained by allowing the application to operate with-
out a battery, a discharged battery, or a dead battery.
Automatic input selection switches the system from bat-
tery to external power.
The I
2
C interface provides full programmability of battery
charge characteristics, input current limit, and protec-
tion features. This provides flexibility for use with a wide
range of adapter and battery sizes.
Other features include undervoltage lockout (UVLO),
overvoltage protection (OVP), charge status flag, charge
fault flag, input power-OK monitor, battery detection,
JEITA-compliant charging, charge timer, 3.3V/10mA aux-
iliary output, and an external power-on switch.
Benefits and Features
S
Enables Charging from a USB Port
S
Automatic Detection of Adapter Type
S
Input Current Up to 1500mA and Charging Current
Up to 900mA
S
Enumeration Without Processor Intervention
S
Supports USB Low-Speed and Full-Speed
S
Compliant with USB 2.0 Specification and Battery
Charging Specification (Revision 1.1)
S
Compliant with Next Generation Low-Voltage
Li-Ion Battery Profiles
S
Input Overvoltage Protection Up to 16V
S
Smart Power Selector™ Allows Power Path
Operation with Discharged or No Battery
S
Battery Detection Including Packs with Open
Protectors
S
Thermal Regulation Prevents Overheating
S
LED Indicator for Charge Done, Precharge, and
Time/Temperature Error
S
Serial (400kHz) I
2
C-Compatible Interface
S
6µA (typ) Shutdown Current
S
2.44mm x 2.44mm, 25-Bump WLP Package
Applications
Bluetooth Headsets, PDAs, and MP3 Players
Other Portable Devices
Simplified Operating Circuit
4.0V TO 6.6V
(+16V OVP)
BUS
V
BUS
SYS
SYSTEM
LOAD
I
2
C
D+
D-
CONTROL
LOGIC
USB
INTERFACE
OSC
CHARGE AND
SYS LOAD
SWITCH
BATT
1-CELL LI-ION
MAX77301
Ordering Information
appears at end of data sheet.
Smart Power Selector is a trademark of Maxim Integrated
Products, Inc.
*U.S.
Patent # 6,507,172.
For related parts and recommended products to use with this part, refer to
www.maximintegrated.com/MAX77301.related.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-6556; Rev 0; 1/13

 
EEWorld订阅号

 
EEWorld服务号

 
汽车开发圈

 
机器人开发圈

About Us 关于我们 客户服务 联系方式 器件索引 网站地图 最新更新 手机版

站点相关: 大学堂 TI培训 Datasheet 电子工程 索引文件: 1836  1693  818  328  851  37  35  17  7  18 

器件索引   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

北京市海淀区中关村大街18号B座15层1530室 电话:(010)82350740 邮编:100190

电子工程世界版权所有 京B2-20211791 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号 Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved