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

MAX8934CETI+T

产品描述battery management dual linear charger smart power selector
产品类别半导体    其他集成电路(IC)   
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 选型对比 全文预览

MAX8934CETI+T概述

battery management dual linear charger smart power selector

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

MAX8934CETI+T相似产品对比

MAX8934CETI+T MAX8934BETI+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

技术资料推荐更多

 
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: 1003  1863  2092  136  1679  21  38  43  3  34 

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