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LM3420M5X-8.4/NOPB PDF预览

LM3420M5X-8.4/NOPB

更新时间: 2024-11-23 13:09:23
品牌 Logo 应用领域
美国国家半导体 - NSC 电源电路电池电源管理电路光电二极管控制器
页数 文件大小 规格书
17页 396K
描述
IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5, MINIATURE, SOT-23, 5 PIN, Power Management Circuit

LM3420M5X-8.4/NOPB 技术参数

是否Rohs认证:符合生命周期:Transferred
包装说明:LSSOP, TSOP5/6,.11,37Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.12Is Samacsys:N
可调阈值:YES模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码:R-PDSO-G5JESD-609代码:e3
长度:2.92 mm湿度敏感等级:1
信道数量:1功能数量:1
端子数量:5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:LSSOP封装等效代码:TSOP5/6,.11,37
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.22 mm子类别:Power Management Circuits
最大供电电流 (Isup):0.15 mA最大供电电压 (Vsup):8.568 V
最小供电电压 (Vsup):8.232 V标称供电电压 (Vsup):8.4 V
表面贴装:YES技术:BIPOLAR
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.95 mm
端子位置:DUAL处于峰值回流温度下的最长时间:40
宽度:1.6 mmBase Number Matches:1

LM3420M5X-8.4/NOPB 数据手册

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May 1998  
LM3420-4.2, -8.2, -8.4, -12.6, -16.8  
Lithium-Ion Battery Charge Controller  
The LM3420 is available in a sub-miniature 5-lead SOT23-5  
surface mount package thus allowing very compact designs.  
General Description  
The LM3420 series of controllers are monolithic integrated  
circuits designed for charging and end-of-charge control for  
Lithium-Ion rechargeable batteries. The LM3420 is available  
in five fixed voltage versions for one through four cell charger  
applications (4.2V, 8.2V/8.4V, 12.6V and 16.8V respec-  
tively).  
Features  
n Voltage options for charging 1, 2, 3 or 4 cells  
n Tiny SOT23-5 package  
n Precision (0.5%) end-of-charge control  
n Drive capability for external power stage  
n Low quiescent current, 85 µA (typ.)  
Included in a very small package is an (internally compen-  
sated) op amp, a bandgap reference, an NPN output transis-  
tor, and voltage setting resistors. The amplifier’s inverting in-  
put is externally accessible for loop frequency  
compensation. The output is an open-emitter NPN transistor  
capable of driving up to 15 mA of output current into external  
circuitry.  
Applications  
n Lithium-Ion battery charging  
n Suitable for linear and switching regulator charger  
designs  
A trimmed precision bandgap reference utilizes temperature  
drift curvature correction for excellent voltage stability over  
the operating temperature range. Available with an initial tol-  
erance of 0.5% for the A grade version, and 1% for the stan-  
dard version, the LM3420 allows for precision end-of-charge  
control for Lithium-Ion rechargeable batteries.  
Typical Application and Functional Diagram  
DS012359-1  
Typical Constant Current/Constant Voltage  
Li-Ion Battery Charger  
DS012359-2  
LM3420 Functional Diagram  
SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation.  
© 1999 National Semiconductor Corporation  
DS012359  
www.national.com  

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