Datasheet > UC3544DWTR

UC3544DWTR

更新时间： 2024-11-10 23:38:55

品牌	Logo	应用领域
其他 - ETC		光电二极管
页数	文件大小	规格书
6页	481K
描述
Voltage Detector

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

UC3544DWTR 数据手册

UC1543 UC1544

UC2543 UC2544

UC3543 UC3544

Power Supply Supervisory Circuit

FEATURES

DESCRIPTION

•

Includes Over-voltage,

The monolithic integrated circuits contain all the functions necessary to monitor

and control the output of a sophisticated power supply system. Over-voltage (O.V.)

sensing with provision to trigger an external SCR “crowbar” shutdown; an under-

voltage (U.V.) circuit which can be used to monitor either the output or to sample

the input line voltage; and a third op amp/comparator usable for current sensing

(C.L.) are all included in this IC, together with an independent, accurate reference

generator.

Under-voltage, And Current

Sensing Circuits

•

Internal 1% Accurate

Reference

•

Programmable Time Delays

SCR “Crowbar” Drive Of

300mA

Both over- and under-voltage sensing circuits can be externally programmed for

minimum time duration of fault before triggering. All functions contain open collec-

tor outputs which can be used independently or wire-or’ed together, and although

the SCR trigger is directly connected only to the over-voltage sensing circuit, it

may be optionally activated by any of the other outputs, or from an external signal.

The O.V. circuit also includes an optional latch and external reset capability.

•

Remote Activation Capability

Optional Over-voltage Latch

Uncommitted Comparator

Inputs For Low Voltage

Sensing (UC1544 Series

Only)

The UC1544/2544/3544 devices have the added versatility of completely uncom-

mitted inputs to the voltage sensing comparators so that levels less than 2.5V may

be monitored by dividing down the internal reference voltage. The current sense

circuit may be used with external compensation as a linear amplifier or as a high-

gain comparator. Although nominally set for zero input offset, a fixed threshold may

be added with an external resistor. Instead of current limiting, this circuit may also

be used as an additional voltage monitor.

The reference generator circuit is internally trimmed to eliminate the need for ex-

ternal potentiometers and the entire circuit may be powered directly from either the

output being monitored or from a separate bias voltage.

BLOCK DIAGRAM

Note: For each terminal, first number refers to 1543 series, second to 1544 series.

* On 1543 series, this function is internally connected to VREF.

4/97

12 3 4 5 6

中文翻译

下载PDF

与UC3544DWTR相关器件

型号	品牌	获取价格	描述	数据表
UC3544DWTRG4	TI	获取价格	IC,VOLT DETECTOR,ADJUSTABLE,BIPOLAR,SOP,18PIN,PLASTIC
UC3544J	TI	获取价格	Power Supply Supervisory Circuit
UC3544L	ETC	获取价格	Analog IC
UC3544N	TI	获取价格	Power Supply Supervisory Circuit
UC3544NG4	TI	获取价格	Power Supply Supervisory Circuit
UC3544Q	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC20, PLASTIC, LCC-20
UC3544QTR	ETC	获取价格	Voltage Detector
UC3548	TI	获取价格	Primary Side PWM Controller
UC3548DW	TI	获取价格	2.2A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO16
UC3548DWTR	TI	获取价格	2.2A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO16, 0.300 INCH, PLASTIC, SOIC-1

与UC3544DWTR相关文章

国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

23
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

7
AMD宣布全球裁员约1000人，调整战略聚焦增长
2024-11-14

8
英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

31

产品中心

服务支持

精选活动

关于我们

帮助中心

UC3544DWTR

UC3544DWTR 数据手册

与UC3544DWTR相关器件

与UC3544DWTR相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

UC3544DWTR

UC3544DWTR 数据手册

与UC3544DWTR相关器件

与UC3544DWTR相关文章

您还可以找

您在本页遇到什么问题？