5秒后页面跳转
UCC3890 PDF预览

UCC3890

更新时间: 2024-11-21 22:39:59
品牌 Logo 应用领域
德州仪器 - TI 电池
页数 文件大小 规格书
8页 218K
描述
Off-Line Battery Charger Circuit

UCC3890 数据手册

 浏览型号UCC3890的Datasheet PDF文件第2页浏览型号UCC3890的Datasheet PDF文件第3页浏览型号UCC3890的Datasheet PDF文件第4页浏览型号UCC3890的Datasheet PDF文件第5页浏览型号UCC3890的Datasheet PDF文件第6页浏览型号UCC3890的Datasheet PDF文件第7页 
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  

与UCC3890相关器件

型号 品牌 获取价格 描述 数据表
UCC3890D TI

获取价格

Off-Line Battery Charger Circuit 8-SOIC 0 to 70
UCC3890DTR TI

获取价格

Off-Line Battery Charger Circuit 8-SOIC 0 to 70
UCC3890J TI

获取价格

BATTERY CHARGE CONTROLLER, CDIP8, DIP-8
UCC3890N TI

获取价格

Off-Line Battery Charger Circuit 8-PDIP 0 to 70
UCC3895 TI

获取价格

BiCMOS Advanced Phase Shift PWM Controller
UCC3895DW TI

获取价格

BiCMOS Advanced Phase Shift PWM Controller
UCC3895DWG4 TI

获取价格

BiCMOS ADVANCED PHASE-SHIFT PWM CONTROLLER
UCC3895DWTR TI

获取价格

BiCMOS Advanced Phase Shift PWM Controller
UCC3895DWTRG4 TI

获取价格

BiCMOS Advanced Phase Shift PWM Controller
UCC3895N TI

获取价格

BiCMOS Advanced Phase Shift PWM Controller