ICL7673

The Intersil ICL7673 is a monolithic CMOS battery backup circuit that offers unique performance advantages over conventional means of switching to a backup supply. The ICL7673 is intended as a low-cost solution for the switching of systems between two power supplies; main and battery backup. The main application is keep-alive-battery power switching for use in volatile CMOS RAM memory systems and real time clocks. In many applications this circuit will represent a low insertion voltage loss between the supplies and load. This circuit features low current consumption, wide operating voltage range, and exceptionally low leakage between inputs. Logic outputs are provided that can be used to indicate which supply is connected and can also be used to increase the power switching capability of the circuit by driving external PNP transistors.

ICL7673 特点

• Automatically Connects Output to the Greater of Either Input Supply Voltage
• If Main Power to External Equipment is Lost, Circuit Will Automatically Connect Battery Backup
• Reconnects Main Power When Restored
• Logic Indicator Signaling Status of Main Power
• Low Impedance Connection Switches
• Low Internal Power Consumption
• Wide Supply Range: 2.5V to 15V
• Low Leakage Between Inputs
• External Transistors May Be Added if Very Large Currents Need to Be Switched
• Pb-Free Plus Anneal Available (RoHS Compliant)

ICL7673 应用

• On Board Battery Backup for Real-Time Clocks, Timers, or Volatile RAMs
• Over/Under Voltage Detector
• Peak Voltage Detector
• Other Uses:
  • Portable Instruments, Portable Telephones, Line Operated Equipment

ICL7673 芯片订购指南

芯片型号	产品状态	温度范围	封装尺寸图	潮湿敏感度等级MSL	美元价格US $
ICL7673CBA	量产	民用级	8 Ld SOIC	1	1.12
ICL7673CBA-T	量产	民用级	8 Ld SOIC T+R	1	1
ICL7673CBAZA	量产	民用级	8 Ld SOIC	1	0.93
ICL7673CBAZA-T	量产	民用级	8 Ld SOIC T+R	1	1
ICL7673CPA	量产	民用级	8 Ld PDIP	N/A	0.89
ICL7673CPAZ	量产	民用级	8 Ld PDIP	N/A	0.74

ICL7673 应用技术支持与电子电路设计开发资源下载

1. ICL7673 数据资料 datatSheet 下载.PDF
2. Power 电源管理器件产品选型指南 . pdf