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UCC3890N PDF预览

UCC3890N

更新时间: 2024-11-22 20:48:39
品牌 Logo 应用领域
德州仪器 - TI 电池信息通信管理光电二极管
页数 文件大小 规格书
9页 233K
描述
Off-Line Battery Charger Circuit 8-PDIP 0 to 70

UCC3890N 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:DIP
包装说明:DIP, DIP8,.3针数:8
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.92
模拟集成电路 - 其他类型:BATTERY CHARGE CONTROLLER控制模式:VOLTAGE-MODE
最大输入电压:9.4 V最小输入电压:0.8 V
标称输入电压:9 VJESD-30 代码:R-PDIP-T8
长度:9.78 mm功能数量:1
端子数量:8最高工作温度:70 °C
最低工作温度:最大输出电流:0.15 A
封装主体材料:PLASTIC/EPOXY封装代码:DIP
封装等效代码:DIP8,.3封装形状:RECTANGULAR
封装形式:IN-LINE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:5.33 mm
子类别:Switching Regulator or Controllers表面贴装:NO
切换器配置:PUSH-PULL最大切换频率:250 kHz
技术:BICMOS温度等级:COMMERCIAL
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.62 mmBase Number Matches:1

UCC3890N 数据手册

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UCC1890  
UCC2890  
UCC3890  
Off-Line Battery Charger Circuit  
FEATURES  
DESCRIPTION  
Transformerless Off-Line  
The UCC3890 controller is optimized for use as an off-line, low power, low  
voltage, regulated current supply, ideally suited for battery trickle charger  
applications. The unique circuit topology used in this device can be visual-  
ized as two cascaded flyback converters; each operating in the discon-  
tinuous mode, and both driven from a single external power switch. The  
significant benefit of this approach is the ability to charge low voltage bat-  
teries in off-line applications with no transformer, and low internal losses.  
Operation  
Low Voltage Operation to 0.8V  
Ideal for Battery Trickle Charger  
Applications  
Current Mode Operation With  
100mV Shunt  
The control algorithm used by the UCC3890 forces a switch on time in-  
versely proportional to the input line voltage, while the switch off time is  
inversely proportional to the output voltage. This action is automatically  
controlled by an internal feedback loop and reference. The cascaded con-  
figuration allows a large voltage conversion ratio with reasonable switch  
duty cycle.  
Voltage Mode Operation With  
Fixed 1.25V Output or Resistor  
Adjustable Output  
Efficient BiCMOS Design  
Inherent Short Circuit Protection  
While the UCC3890 is ideally suited for control of constant current battery  
chargers, provision is also made to operate as a fixed 1.25V regulated  
supply, or to use a resistor voltage divider to obtain output voltages higher  
than 1.25V.  
BLOCK DIAGRAM  
Note: This device incorporates patented technology used under license from  
Lambda Electronics, Inc.  
UDG-96052  
3/97  

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