UC1543 电源监控电路

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.

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

UC1543
# of supplies monitored 1    
Iq (Typ) (uA) 7000    
Output Driver Type / Reset Output Active-low,Open-drain
Reset Threshold Accuracy (%) 1    
Time Delay (ms) Programmable    
VCC (Min) (V) 4.5    
VCC (Max) (V) 40    
Threshold Voltage 1 (typ) (Typ) (V) 2.5    
Monitored Voltage 1 (typ) (Nom) (V) Adjustable    
Pin/Package 16CDIP, 16CFP, 20LCCC
Rating Military
UC1543 特性
UC1543 芯片订购指南
器件 状态 温度 (oC) 价格(美元) 封装 | 引脚 封装数量 | 封装载体 丝印标记
5962-8774001EA ACTIVE -55 to 125 25.33 | 100u CDIP (J) | 16 1 | TUBE  
5962-8774001FA ACTIVE   70.66 | 100u CFP (W) | 16 25 | TUBE  
UC1543J ACTIVE -55 to 125 21.06 | 100u CDIP (J) | 16 1 | TUBE  
UC1543J883B ACTIVE -55 to 125 25.33 | 100u CDIP (J) | 16 1 | TUBE  
UC1543L ACTIVE -55 to 125 40.79 | 100u LCCC (FK) | 20 1 | TUBE  
UC1543L883B ACTIVE -55 to 125 47.49 | 100u LCCC (FK) | 20 1 | TUBE  
UC1543W883B ACTIVE   70.66 | 100u CFP (W) | 16 25 | TUBE  
UC1543 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
5962-8774001EA TBD   Call TI   Call TI 5962-8774001EA 5962-8774001EA
5962-8774001FA TBD   A42   N/A for Pkg Type 5962-8774001FA 5962-8774001FA
UC1543J TBD   A42   N/A for Pkg Type UC1543J UC1543J
UC1543J883B TBD   A42   N/A for Pkg Type UC1543J883B UC1543J883B
UC1543L TBD   POST-PLATE   N/A for Pkg Type UC1543L UC1543L
UC1543L883B TBD   POST-PLATE   N/A for Pkg Type UC1543L883B UC1543L883B
UC1543W883B TBD   A42   N/A for Pkg Type UC1543W883B UC1543W883B
UC1543 工具与软件
培训内容 型号 软件/工具类型
最常用开关模式电源的功率级设计器 POWERSTAGE-DESIGNER 分析软件
UC1543 应用技术支持与电子电路设计开发资源下载
  1. UC1543数据资料 dataSheet 下载.PDF
  2. TI 德州仪器电源管理选型与价格参考 . xls
  3. (应用手册)Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs
  4. (应用手册)Optimizing Resistor Dividers at a Comparator