- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379478 > UCC1890 (Texas Instruments, Inc.) Off-Line Battery Charger Circuit PDF資料下載
參數(shù)資料
| 型號： | UCC1890 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Off-Line Battery Charger Circuit |
| 中文描述： | 離線電池充電器電路 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 215K |
| 代理商： | UCC1890 |
3/97
DESCRIPTION
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.
Transformerless Off-Line
Operation
Low Voltage Operation to 0.8V
Ideal for Battery Trickle Charger
Applications
Current Mode Operation With
100mV Shunt
Voltage Mode Operation With
Fixed 1.25V Output or Resistor
Adjustable Output
Efficient BiCMOS Design
Inherent Short Circuit Protection
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.
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.
UCC1890
UCC2890
UCC3890
Off-Line Battery Charger Circuit
FEATURES
BLOCK DIAGRAM
UDG-96052
Note:
This device incorporates patented technology used under license from
Lambda Electronics, Inc.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UCC1913 | Negative Voltage Hot Swap Power Manager |
| UCC1917 | Positive Floating Hot Swap Power Manager |
| UCC1919 | 3V to 8V Hot Swap Power Manager |
| UCC1921 | Latchable Negative Floating Hot Swap Power Manager |
| UCC3921N | IC POWER MANAGER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC1895 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:BiCMOS ADVANCED PHASE-SHIFT PWM CONTROLLER |
| UCC1895_08 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:BiCMOS ADVANCED PHASE-SHIFT PWM CONTROLLER |
| UCC1895_13 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:BiCMOS Advanced Phase-Shift PWM Controller |
| UCC1895J | 制造商:Texas Instruments 功能描述:Soft Sw PWM Cntrlr 4-OUT BICMOS PH SHIFT RES 1MHz 20-Pin CDIP Tube |
| UCC1895J883B | 制造商:Texas Instruments 功能描述:BICMOS ADVANCED PHASE SHIFT RESONANT CONTROLLER - Rail/Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。