Datasheet > 电源电路 > 开关式稳压器或控制器> UCC1890DTR

UCC1890DTR

更新时间： 2024-11-28 13:15:07

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
UCC1890DTR

阅读下载

中文翻译

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

UCC1890DTR 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.84
Base Number Matches：	1

UCC1890DTR 数据手册

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

12 3 4 5 6 7 8

中文翻译

下载PDF

与UCC1890DTR相关器件

型号	品牌	获取价格	描述	数据表
UCC1890J/883B	TI	获取价格	BATTERY CHARGE CONTROLLER, CDIP8, DIP-8
UCC1890N	TI	获取价格	暂无描述
UCC1895	TI	获取价格	BiCMOS ADVANCED PHASE-SHIFT PWM CONTROLLER
UCC1895_08	TI	获取价格	BiCMOS ADVANCED PHASE-SHIFT PWM CONTROLLER
UCC1895_13	TI	获取价格	BiCMOS Advanced Phase-Shift PWM Controller
UCC1895J	TI	获取价格	BiCMOS ADVANCED PHASE-SHIFT PWM CONTROLLER
UCC1895J883B	TI	获取价格	0.1A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, CDIP8, CERAMIC, DIP-8
UCC1895L	TI	获取价格	BiCMOS ADVANCED PHASE-SHIFT PWM CONTROLLER
UCC1913	TI	获取价格	Negative Voltage Hot Swap Power Manager
UCC1913D	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, 0.150 INCH, PLASTIC, SOIC-8