Datasheet > UC3544DWTR

UC3544DWTR

更新时间： 2024-01-02 14:30:18

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

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技术参数
数据手册

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UC3544DWTR 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	QLCC	包装说明：	QCCJ, LDCC20,.4SQ
针数：	20	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.75	可调阈值：	NO
模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT	JESD-30 代码：	S-PQCC-J20
长度：	8.965 mm	信道数量：	1
功能数量：	1	端子数量：	20
最高工作温度：	70 °C	最低工作温度：
封装主体材料：	PLASTIC/EPOXY	封装代码：	QCCJ
封装等效代码：	LDCC20,.4SQ	封装形状：	SQUARE
封装形式：	CHIP CARRIER	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	4.5/40 V	认证状态：	Not Qualified
座面最大高度：	4.57 mm	子类别：	Power Management Circuits
最大供电电流 (Isup)：	15 mA	最大供电电压 (Vsup)：	40 V
最小供电电压 (Vsup)：	4.5 V	标称供电电压 (Vsup)：	10 V
表面贴装：	YES	技术：	BIPOLAR
温度等级：	COMMERCIAL	端子形式：	J BEND
端子节距：	1.27 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	8.965 mm
Base Number Matches：	1

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

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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

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