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

MAX8934BETI+T

产品描述battery management dual linear charger smart power selector
产品类别电源/电源管理    电源电路   
文件大小1MB,共32页
制造商Maxim(美信半导体)
官网地址https://www.maximintegrated.com/en.html
标准
下载文档 详细参数 选型对比 全文预览

MAX8934BETI+T概述

battery management dual linear charger smart power selector

MAX8934BETI+T规格参数

参数名称属性值
是否无铅不含铅
是否Rohs认证符合
厂商名称Maxim(美信半导体)
包装说明QCCN, LCC28,.16SQ,16
Reach Compliance Codecompliant
ECCN代码EAR99
Factory Lead Time20 weeks
JESD-30 代码S-PQCC-N28
JESD-609代码e3
湿度敏感等级1
端子数量28
最高工作温度85 °C
最低工作温度-40 °C
封装主体材料PLASTIC/EPOXY
封装代码QCCN
封装等效代码LCC28,.16SQ,16
封装形状SQUARE
封装形式CHIP CARRIER
峰值回流温度(摄氏度)260
电源5 V
认证状态Not Qualified
最大供电电流 (Isup)2 mA
标称供电电压 (Vsup)5 V
表面贴装YES
技术BICMOS
温度等级INDUSTRIAL
端子面层Matte Tin (Sn)
端子形式NO LEAD
端子节距0.4 mm
端子位置QUAD
处于峰值回流温度下的最长时间NOT SPECIFIED

文档预览

下载PDF文档
EVALUATION KIT AVAILABLE
MAX8934A–MAX8934E
Dual-Input Linear Chargers, Smart Power Selector
with Advanced Battery Temperature Monitoring
General Description
The MAX8934_ dual-input Li+/Li-Poly linear battery char-
gers with Smart Power SelectorK safely charge a single
Li+/Li-Poly cell in accordance with JEITA recommenda-
tions. The MAX8934_ monitors the battery temperature
(T
BATT
) while charging, and automatically adjusts the
fast-charge current and charge termination voltage as the
battery temperature varies. The MAX8934_ also monitors
the battery temperature while the battery is discharging,
and provides a warning flag (OT) to the system in the
event that the battery is over temperature. Two safety pro-
files are supported (see Figure 6 for details). An ultra-low
I
Q
, always-on LDO provides an additional 3.3V supply for
system power.
The MAX8934_ operates with either separate inputs
for USB and AC adapter power*, or from a single input
that accepts both. All power switches for charging and
switching the load between battery and external power
are included on-chip. No external MOSFETs are required.
The MAX8934_ features a Smart Power Selector to make
the best use of limited USB or adapter power. Input cur-
rent limit and battery charge current limit are indepen-
dently set. Input power not used by the system charges
the battery. Charge current limit and DC current limit can
be set up to 1.5A and 2A, respectively, while USB input
current can be set to 100mA or 500mA for the MAX8934A/
MAX8934B/MAX8934C/MAX8934E and up to 1.5A (max)
for the MAX8934D. Automatic input selection switches the
system load from battery to external power.
The MAX8934A provides a SYS output voltage of 5.3V,
while the MAX8934B–MAX8934E provides a SYS output
voltage of 4.35V.
Other features include overvoltage protection (OVP),
open-drain charge status and fault outputs, power-OK
monitors, charge timers, and a battery thermistor moni-
tor. Additionally, on-chip thermal limiting reduces the
battery charge-rate to prevent charger overheating.
The MAX8934_ is available in a 28-pin, 4mm x 4mm,
TQFN package.
Features
S
Li+ Charger with Smart Power Selector, No
External MOSFETs Needed
S
Monitors Battery Temperature and Adjusts Charge
Current and Termination Voltage Automatically
per JEITA Recommendations
S
OT
Flags System of a Hot Battery During
Discharge
S
Ultra-Low I
Q
, Always-On 3.3V LDO
S
Common or Separate USB and Adapter Inputs
S
Automatic Adapter/USB/Battery Switchover
S
Load Peaks in Excess of Adapter Rating are
Supported by Battery
S
Input OVP to 16V (DC) and 9V (USB)
S
40mI SYS-to-BATT Switch
S
Thermal Regulation Prevents Overheating
S
4.35V or 5.3V SYS Regulation Voltage
S
1.5A (max) USB Input Current Limit (MAX8934D)
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX8934AETI+
-40NC to +85NC
28 Thin QFN-EP**
+Denotes
a lead(Pb)-free/RoHS-compliant package.
**EP
= Exposed pad.
Ordering Information continued and Selector Guide appears
at end of data sheet.
Typical Operating Circuit
LDO
3.3V ALWAYS-ON
LINEAR
REGULATOR
AC
ADAPTER
DC
Q1
CHARGE
CURRENT
Q3
CHARGE
AND
SYS LOAD
SWITCH
SYS
LOAD
CURRENT
SYSTEM
LOAD
Applications
PDAs, Palmtop, and Wireless Handhelds
Portable Media, MP3 Players, and PNDs
Digital Still Cameras and Digital Video Cameras
Handheld Game Systems
Smart Power Selector is a trademark of Maxim Integrated
Products, Inc.
*Protected
by U.S. Patent #6,507,172.
USB
USB Q2
BATT
BATTERY
MAX8934A−
MAX8934E
GND
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-4995; Rev 3; 1/14

MAX8934BETI+T相似产品对比

MAX8934BETI+T MAX8934CETI+T MAX8934AETI+T
描述 battery management dual linear charger smart power selector battery management dual linear charger smart power selector IC BATTERY CHARGER DUAL 28TQFN
是否无铅 不含铅 - 不含铅
是否Rohs认证 符合 - 符合
厂商名称 Maxim(美信半导体) - Maxim(美信半导体)
包装说明 QCCN, LCC28,.16SQ,16 - QCCN, LCC28,.16SQ,16
Reach Compliance Code compliant - compliant
ECCN代码 EAR99 - EAR99
Factory Lead Time 20 weeks - 20 weeks
JESD-30 代码 S-PQCC-N28 - S-PQCC-N28
JESD-609代码 e3 - e3
湿度敏感等级 1 - 1
端子数量 28 - 28
最高工作温度 85 °C - 85 °C
最低工作温度 -40 °C - -40 °C
封装主体材料 PLASTIC/EPOXY - PLASTIC/EPOXY
封装代码 QCCN - QCCN
封装等效代码 LCC28,.16SQ,16 - LCC28,.16SQ,16
封装形状 SQUARE - SQUARE
封装形式 CHIP CARRIER - CHIP CARRIER
峰值回流温度(摄氏度) 260 - 260
电源 5 V - 5 V
认证状态 Not Qualified - Not Qualified
最大供电电流 (Isup) 2 mA - 2 mA
标称供电电压 (Vsup) 5 V - 5 V
表面贴装 YES - YES
技术 BICMOS - BICMOS
温度等级 INDUSTRIAL - INDUSTRIAL
端子面层 Matte Tin (Sn) - Matte Tin (Sn)
端子形式 NO LEAD - NO LEAD
端子节距 0.4 mm - 0.4 mm
端子位置 QUAD - QUAD
处于峰值回流温度下的最长时间 NOT SPECIFIED - NOT SPECIFIED
一周精彩回顾:2018.7.2-7.8
hi,大家早上好~~又是新的一周,赶紧来看看最新的精彩推荐吧~~ 精彩好贴推荐: #pyboardCN v2畅玩一夏# @dcexpert pyboardCN V2 问题1 pyboardCN V2 问题2 使用micropython编程,实现 ......
okhxyyo 机器人开发
高手来帮我看下这AD程序
#include "msp430g2553.h"#include "1602.h" #define uchar unsigned char #define uint unsigned int #define Num_of_Results 1//unsigned long sum=0;static uint results; //保存ADC转换结 ......
tanfeng193 微控制器 MCU
单片机电子类公司招聘题目精选
1、简单描述一个单片机系统的主要组成模块,并说明各模块之间的数据流流向和控制流流向。简述单片机应用系统的设计原则。(仕兰微面试题目)2、画出8031与2716(2K*8ROM)的连线图,要求采用三-八译 ......
qinkaiabc 单片机
MC55通过GPRS通讯问题
我用MC55做了一个终端,想通过GPRS跟PC进行数据交换,现在用超级终端来控制模块,也知道PC的ip和端口号,想问问如何从PC来看到MC55传输过来的数据啊,是要用后期开发的服务器程序,还是用window ......
岚裳 嵌入式系统
【求助】ADC采集
想利用DIO0、1、2、3ADC采集四个电压值 在例程peripheral_server_uart的基础上更改了一下ADC配置 现在读出来的值为3FFF 是配置的不对吗? ...
Aaaaaoooo 物联网大赛方案集锦
此输入端该怎么处理,需要判断吗
127862 你好,这是这个方案的框图,主要是说,输入端的电压有两个范围,并且输入端只有一个,经过同一个降压模块后给24VDC负载供电。请问这个输入端该怎么处理?...
hfutdsplab 电源技术

 
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: 835  662  2079  2361  2817  17  14  42  48  57 

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