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SI9731DB PDF预览

SI9731DB

更新时间: 2024-01-30 07:39:23
品牌 Logo 应用领域
威世 - VISHAY 电池
页数 文件大小 规格书
9页 61K
描述
UP Controlled Battery Charger For 1-Cell Li-ion or 1-Cell to 3-Cell NiCd/NiMH Batteries

SI9731DB 技术参数

是否无铅:含铅是否Rohs认证:不符合
生命周期:Transferred零件包装代码:TSSOP
包装说明:TSSOP,针数:16
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.34
Is Samacsys:N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:5 mm
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:TSSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):240
认证状态:Not Qualified座面最大高度:1.2 mm
最大供电电压 (Vsup):12 V最小供电电压 (Vsup):3 V
标称供电电压 (Vsup):4.5 V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:0.65 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
宽度:4.4 mmBase Number Matches:1

SI9731DB 数据手册

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Si9731  
Vishay Siliconix  
mP Controlled Battery Charger  
For 1-Cell Li-ion or 1-Cell to 3-Cell NiCd/NiMH Batteries  
FEATURES  
D Pulse Charges 1-Cell Li-ion or 1-Cell to 3-Cell  
D Complete Isolation from Battery to External Power  
NiCd/NiMH Batteries  
Supply In Shutdown  
D Integrated MOSFETs With Bi-directional Reverse  
D Thermal Shutdown  
Current Blocking in “OFF” Mode  
D Minimum Number 0f External Components  
D PWM Controlled Fast Charging Mode  
D ESD Protection to 4 kV on Charger Input and Battery  
D Low Current Trickle Charge Mode  
D Pin Selectable 4.1 V or 4.2 V Charge Termination for  
Li-ion  
Output  
D TSSOP-16 Package (1.2-mm maximum height)  
D Constant Voltage (CV) Termination For Li-ion  
D Input Over-Voltage Detector with Automatic Shutdown  
D External Shutdown  
APPLICATIONS  
D Cellular Phone Battery Charger  
D Personal Digital Assistants  
D Under 1-mA Reverse Battery Leakage Current In  
Shutdown  
DESCRIPTION  
Si9731 is a chemistry independent battery charger designed  
to pulse charge 1-cell to 3-cell NiCd/NiMH or 1-cell Li-ion  
batteries. Battery charging is accomplished under direct  
control from the system processor. An internal low rDS(on)  
MOSFET can be pulsed on and off at varying duty cycle by the  
system processor to pulse charge the battery at high charge  
current while minimizing heat dissipation. Provision is also  
made to trickle charge a discharged battery until the battery is  
charged to a high enough voltage to wake up the processor so  
that the processor can take control of the charging process.  
For charging Li-ion batteries, Si9731 includes a precision  
voltage reference and an error amplifier for constant voltage  
(CV) charge mode.  
FUNCTIONAL BLOCK DIAGRAM  
V
BAT  
V
CHARGER  
ON/OFF  
Fast  
Charge  
B
a
t
Trickle  
Charge  
t
e
r
y
TRICKLECHARGEENABLE  
CV  
MODE  
Charge Control  
4.1/4.2 V_TAP  
FAST CHARGE  
GND  
Document Number: 71321  
S-02258—Rev. A, 28-Sep-00  
www.vishay.com  
1

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