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LTC693CSW#TRPBF PDF预览

LTC693CSW#TRPBF

更新时间: 2024-09-27 13:09:55
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
20页 194K
描述
LTC693 - Microprocessor Supervisory Circuits; Package: SO; Pins: 16; Temperature Range: 0°C to 70°C

LTC693CSW#TRPBF 技术参数

是否Rohs认证:符合生命周期:Transferred
零件包装代码:SOIC包装说明:SOP,
针数:16Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.16Is 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:R-PDSO-G16JESD-609代码:e3
长度:10.3 mm湿度敏感等级:1
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封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):250
认证状态:Not Qualified座面最大高度:2.65 mm
表面贴装:YES技术:CMOS
温度等级:COMMERCIAL端子面层:Tin (Sn)
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 mmBase Number Matches:1

LTC693CSW#TRPBF 数据手册

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LTC692/LTC693  
Microprocessor  
Supervisory Circuits  
FEATURES  
DESCRIPTION  
The LTC®692/LTC693 provide complete power supply  
monitoringandbatterycontrolfunctionsformicroproces-  
sor reset, battery backup, CMOS RAM write protection,  
power failure warning and watchdog timing. A precise  
internal voltage reference and comparator circuit monitor  
thepowersupplyline. Whenanout-of-tolerancecondition  
occurs,theresetoutputsareforcedtoactivestatesandthe  
chipenableoutputunconditionallywrite-protectsexternal  
memory. In addition, the RESET output is guaranteed to  
n
UL Recognized ®  
n
Guaranteed Reset Assertion at V = 1V  
CC  
n
n
1.5mA Maximum Supply Current  
Fast (35ns Maximum) Onboard Gating of RAM Chip  
Enable Signals  
n
n
n
n
n
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  
remain logic low even with V as low as 1V.  
CC  
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.  
n
n
n
n
Thermal Limiting  
Performance Specified Over Temperature  
Superior Upgrade for MAX690 Family  
SO8 and SO16 Packaging  
APPLICATIONS  
For an early warning of impending power failure, the  
LTC692/LTC693 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.  
n
Critical μP Power Monitoring  
n
Intelligent Instruments  
n
Battery-Powered Computers and Controllers  
n
Automotive Systems  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
RESET Output Voltage vs  
Supply Voltage  
5
T
= 25°C  
A
EXTERNAL PULL-UP = 10μA  
= 0V  
LT1086-5  
V
≥ 7.5V  
IN  
5V  
V
BATT  
4
3
POWER TO  
μP  
V
V
V
CC  
V
IN  
OUT  
OUT  
+
+
CMOS RAM POWER  
0.1μF  
3V  
0.1μF  
LTC692  
LTC693  
100μF  
10μF  
ADJ  
μP  
SYSTEM  
V
BATT  
μP RESET  
μP NMI  
RESET  
PFO  
2
1
0
51k  
10k  
I/O LINE  
PFI  
WDI  
692_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)  
692_3 • TA02  
0692fa  
1

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