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DS1819BR-5T&R PDF预览

DS1819BR-5T&R

更新时间: 2024-11-06 21:00:19
品牌 Logo 应用领域
达拉斯 - DALLAS 光电二极管
页数 文件大小 规格书
8页 110K
描述
Power Supply Management Circuit, Fixed, 1 Channel, +3VV, CMOS, PDSO5, SOT-23, 5 PIN

DS1819BR-5T&R 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:SOT-23, 5 PINReach Compliance Code:unknown
风险等级:5.72其他特性:Watchdog Timer, PUSHBUTTON RESET OPTION
可调阈值:NO模拟集成电路 - 其他类型:POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码:R-PDSO-G5JESD-609代码:e0
信道数量:1功能数量:1
端子数量:5最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:TSOP封装等效代码:TSOP5/6,.11,37
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
电源:1.2/5.5 V认证状态:Not Qualified
子类别:Power Management Circuits最大供电电流 (Isup):0.012 mA
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):1 V
标称供电电压 (Vsup):2.7 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.95 mm端子位置:DUAL
阈值电压标称:+3VBase Number Matches:1

DS1819BR-5T&R 数据手册

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DS1814/DS1819  
5-Volt and 3.3-Volt MicroMonitor  
www.dalsemi.com  
FEATURES  
Halts and restarts an out-of-control  
microprocessor  
PIN ASSIGNMENT  
3
2
1
Holds microprocessor in check during power  
transients  
Automatically restarts microprocessor after  
power failure  
4
5
Monitors pushbutton for external override  
Accurate 5%, 10%, or 20% (3-volt only)  
microprocessor power monitoring  
Eliminates the need for discrete components  
20% tolerance for use with 3.0-volt systems  
Pin- and function-compatible with the  
MAX823/24/25 products  
SOT-23-5 PACKAGE  
See Mech. Drawing  
PIN DESCRIPTION  
DS181xA  
1
2
RST  
GND  
Active Low Reset Output  
Ground  
Low cost SOT-23-5 package  
Industrial temperature: -40°C to +85°C  
3
PBRST  
Pushbutton Reset Input  
4
5
ST  
VCC  
Strobe Input  
Power Supply  
DEVICE  
RST  
WD  
RST  
X
PBRST  
DS181xA  
DS181xB  
DS181xC  
x = "DS1814" for 5 volt devices  
x = "DS1819" for 3 volt devices  
X
X
X
DS181xB  
X
X
X
1
2
3
RST  
GND  
RST  
Active Low Reset Output  
Ground  
Active High Reset Output  
X
X
4
5
ST  
VCC  
Strobe Input  
Power Supply  
DS181xC  
1
2
3
RST  
GND  
RST  
Active Low Reset Output  
Ground  
Active High Reset Output  
4
5
PBRST  
VCC  
Pushbutton Reset Input  
Power Supply  
DESCRIPTION  
The DS1814 5-Volt MicroMonitor and the DS1819 3.3-Volt MicroMonitor monitor three vital conditions  
for a microprocessor: power supply, software execution, and external override. First, a precision  
temperature-compensated reference and comparator circuit monitor the status of VCC. When an out-of-  
tolerance condition occurs, an internal power-fail signal is generated which forces the reset(s) to an active  
state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for a  
minimum of 140 ms to allow the power supply and processor to stabilize.  
1 of 8  
111999  

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