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MAX1894XEEE-T

更新时间： 2024-11-05 20:38:39
品牌 Logo 应用领域
美信 - MAXIM 光电二极管
页数 文件大小 规格书
16页 302K
描述
Power Supply Support Circuit, Fixed, 1 Channel, PDSO16, 0.150 INCH, 0.025 INCH PITCH, QSOP-16

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MAX1894XEEE-T 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：SOIC包装说明：SSOP,
针数：16Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.33可调阈值：NO
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：R-PDSO-G16
JESD-609代码：e0长度：4.89 mm
湿度敏感等级：1信道数量：1
功能数量：1端子数量：16
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：SSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：245认证状态：Not Qualified
座面最大高度：1.73 mm表面贴装：YES
温度等级：INDUSTRIAL端子面层：TIN LEAD
端子形式：GULL WING端子节距：0.635 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：3.9 mmBase Number Matches：1

MAX1894XEEE-T 数据手册

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19-2278; Rev 0; 4/02  
Advanced Li+ Battery-Pack Protectors  
General Description  
Features  
The MAX1894/MAX1924 are lithium-ion/lithium-polymer  
(Li+) battery-pack protector ICs for 3- or 4-series Li+ bat-  
tery packs. The MAX1894/MAX1924 enhance the useful  
operating life of Li+ batteries by monitoring individual cell  
voltages and preventing over/undervoltage conditions.  
The MAX1894/MAX1924 also protect the battery pack  
against charge current, discharge current, and pack-  
short fault conditions.  
ꢀ Protect Against Cell Overvoltage  
Factory Programmable Limits from 4V to 4.4V  
Accurate to ±±.ꢀ5  
ꢀ Protect Against Cell Undervoltage  
Factory Programmable Limits from 2V to 3.2V  
Accurate to ±2.±5  
ꢀ Protect Against Charge, Discharge, and Pack-  
In case of a fault condition, on-board drivers control  
external P-channel MOSFETs, which disconnect the cells  
from the pack external terminals. The external protection  
MOSFETs are connected in a common-source configura-  
tion that does not require external pullup resistors. The  
MAX1894/MAX1924 use only one current-sense resistor  
to achieve the protection features. All protection thresh-  
olds and delays do not require any external components  
and are trimmed at the factory.  
Short Current Faults  
ꢀ Automatically Trickle Charges Deeply Discharged  
Cells  
ꢀ Fully Integrated MOSFET Drivers Do Not Require  
Pullup Resistors  
ꢀ ±.8µA (typ) Shutdown Supply Current Prevents  
Deep Discharge of Cells  
ꢀ 3±µA (typ) Operating Supply Current  
ꢀ 28V (max) Input Voltage  
If any cell voltage drops below the undervoltage thresh-  
old, the MAX1894/MAX1924 disconnect the pack from  
the load and power down to prevent deep discharge of  
the pack. The MAX1894/MAX1924 offer a trickle-charge  
feature, which provides a low-current path to safely  
charge a deeply discharged pack. The MAX1894/  
MAX1924 also have two logic-level inputs, which can be  
used by a microcontroller to disable the protection  
MOSFETs and to put the device in shutdown. The  
MAX1894/MAX1924 have low quiescent current (30µA  
typ) and ultra-low shutdown current (0.8µA typ) to pre-  
vent deep-cell discharge.  
ꢀ Available in Small 16-Pin QSOP Package  
Pin Configuration  
TOP VIEW  
B4P  
1
2
3
4
5
6
7
8
16 SRC  
15 DSO  
V
CC  
CGO  
14  
B3P  
IC3  
B2P  
IC2  
B1P  
IC1  
13 TKO  
12 SHDN  
11 CTL  
10 PKN  
The MAX1894X is designed for 4-series battery packs,  
without hysteresis on the protection thresholds. The  
MAX1924V and MAX1924X include hysteresis for the 3-  
and 4-series packs, respectively.  
MAX1894  
MAX1924  
9
BN  
Applications  
QSOP  
3- or 4-Series Li+ Battery Packs  
Ordering Information  
OVERVOLTAGE  
THRESHOLD HYSTERESIS  
PART  
TEMP RANGE  
PIN-PACKAGE  
CELLS  
OVERVOLTAGE  
MAX1894XEEE  
MAX1924VEEE  
MAX1924XEEE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
16 QSOP  
16 QSOP  
16 QSOP  
4
3
4
4.25V*  
4.35V*  
4.35V*  
No  
Yes  
Yes  
*Contact factory for alternative threshold voltages.  
Typical Applications Circuits appear at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...16

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