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UC1543L PDF预览

UC1543L

更新时间： 2024-11-05 12:02:19
品牌 Logo 应用领域
德州仪器 - TI 电源电路电源管理电路监控
页数 文件大小 规格书
20页 1242K
描述
Power Supply Supervisory Circuit

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UC1543L 技术参数

生命周期：Active零件包装代码：QLCC
包装说明：LCC-20针数：20
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：5.14Is Samacsys：N
可调阈值：NO模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：S-CQCC-N20长度：8.89 mm
信道数量：1功能数量：1
端子数量：20最高工作温度：125 °C
最低工作温度：-55 °C封装主体材料：CERAMIC, METAL-SEALED COFIRED
封装代码：QCCN封装等效代码：LCC20,.35SQ
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：2.03 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)：4.7 V
标称供电电压 (Vsup)：10 V表面贴装：YES
技术：CMOS温度等级：MILITARY
端子形式：NO LEAD端子节距：1.27 mm
端子位置：QUAD阈值电压标称：2.5
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：8.89 mm
Base Number Matches：1

UC1543L 数据手册

 浏览型号UC1543L的Datasheet PDF文件第2页浏览型号UC1543L的Datasheet PDF文件第3页浏览型号UC1543L的Datasheet PDF文件第4页浏览型号UC1543L的Datasheet PDF文件第5页浏览型号UC1543L的Datasheet PDF文件第6页浏览型号UC1543L的Datasheet PDF文件第7页 
UC1543, UC1544  
UC2543, UC2544  
UC3543, UC3544  
www.ti.com  
SLUS188A–APRIL 1997–REVISED FEBRUARY 2007  
Power Supply Supervisory Circuit  
Both over- and under-voltage sensing circuits can be  
externally programmed for minimum time duration of  
fault before triggering. All functions contain open  
collector 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.  
FEATURES  
•
Includes Over-Voltage, Under-Voltage, and  
Current Sensing Circuits  
•
•
•
•
•
•
Internal 1% Accurate Reference  
Programmable Time Delays  
SCR “Crowbar” Drive of 300 mA  
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 uncommitted inputs to the  
voltage sensing comparators so that levels less than  
2.5 V 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 highgain 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.  
DESCRIPTION  
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  
undervoltage (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 device,  
together with an independent, accurate reference  
generator.  
The reference generator circuit is internally trimmed  
to eliminate the need for external 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.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 1997–2007, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
1234567...20

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UC1543L 替代型号

型号 品牌 替代类型 描述 数据表
UC1543L883B TI

完全替代

 Power Supply Supervisory Circuit
UC1543J TI

类似代替

 Power Supply Supervisory Circuit
UC1543W883B TI

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 Power Supply Supervisory Circuit

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UC1544DW TI

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UC1544L TI

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UC1544L883B TI

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