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LTC693CS PDF预览

LTC693CS

更新时间: 2024-09-26 22:51:47
品牌 Logo 应用领域
凌特 - Linear 微处理器监控
页数 文件大小 规格书
16页 309K
描述
Microprocessor Supervisory Circuits

LTC693CS 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SOIC包装说明:SOP, SOP16,.4
针数:16Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.76可调阈值:NO
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:R-PDSO-G16
JESD-609代码:e0长度:10.3 mm
信道数量:1功能数量:1
端子数量:16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:SOP封装等效代码:SOP16,.4
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):245电源:5 V
认证状态:Not Qualified座面最大高度:2.65 mm
子类别:Power Management Circuits最大供电电流 (Isup):2.5 mA
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
标称供电电压 (Vsup):5 V表面贴装:YES
技术:CMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:7.5 mm
Base Number Matches:1

LTC693CS 数据手册

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LTC692/LTC693  
Microprocessor  
Supervisory Circuits  
U
DESCRIPTIO  
EATURE  
S
F
UL Recognized  
TheLTC692/LTC693providecompletepowersupplymoni-  
toring and battery control functions for microprocessor  
reset, batterybackup, CMOSRAMwriteprotection, power  
failure warning and watchdog timing. A precise internal  
voltage reference and comparator circuit monitor the  
power supply line. When an out-of-tolerance condition  
occurs,theresetoutputsareforcedtoactivestatesandthe  
Chip Enable output unconditionally write-protects exter-  
nal memory. In addition, the RESET output is guaranteed  
to remain logic low even with VCC as low as 1V.  
®
Guaranteed Reset Assertion at VCC = 1V  
1.5mA Maximum Supply Current  
Fast (35ns Max.) On-Board Gating of RAM Chip  
Enable Signals  
SO8 and SO16 Packaging  
4.40V Precision Voltage Monitor  
Power OK/Reset Time Delay:  
200ms or Adjustable  
Minimum External Component Count  
1µA Maximum Standby Current  
Voltage Monitor for Power Fail or  
Low Battery Warning  
Thermal Limiting  
Performance Specified Over Temperature  
Superior Upgrade for MAX690 Family  
The LTC692/LTC693 power the active CMOS RAMs with a  
charge pumped NMOS power switch to achieve low drop-  
out and low supply current. When primary power is lost,  
auxiliarypower,connectedtothebatteryinputpin,powers  
the RAMs in standby through an efficient PMOS switch.  
For an early warning of impending power failure, the  
LTC692/LTC963 provide an internal comparator with a  
user-defined threshold. An internal watchdog timer is  
also available, which forces the reset pins to active states  
when the watchdog input is not toggled prior to a preset  
time-out period.  
O U  
PPLICATI  
S
A
Critical µP Power Monitoring  
Intelligent Instruments  
Battery-Powered Computers and Controllers  
Automotive Systems  
U
O
TYPICAL APPLICATI  
RESET Output Voltage vs  
Supply Voltage  
5
LT1086-5  
T = 25°C  
A
V
7.5V  
IN  
5V  
EXTERNAL PULL-UP = 10µA  
= 0V  
POWER TO  
µP  
V
V
OUT  
V
CC  
V
OUT  
IN  
+
+
V
4
3
BATT  
CMOS RAM POWER  
0.1µF  
0.1µF  
LTC692  
LTC693  
100µF  
10µF  
ADJ  
µP  
SYSTEM  
V
BATT  
3V  
µP RESET  
µP NMI  
RESET  
PFO  
51k  
10k  
2
1
0
I/O LINE  
PFI  
WDI  
GND  
LTC692/3 • TA01  
0.1µF  
100Ω  
MICROPROCESSOR RESET, BATTERY BACKUP, POWER FAILURE  
WARNING AND WATCHDOG TIMING ARE ALL IN A SINGLE CHIP  
FOR MICROPROCESSOR SYSTEMS.  
0
1
2
3
4
5
SUPPLY VOLTAGE (V)  
LTC692/3 • TA02  
1

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