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MAX809LEUR-T10-

产品描述Supervisory Circuits
产品类别半导体    电源管理   
文件大小834KB,共8页
制造商Maxim(美信半导体)
官网地址https://www.maximintegrated.com/en.html
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MAX809LEUR-T10-概述

Supervisory Circuits

MAX809LEUR-T10-规格参数

参数名称属性值
产品种类
Product Category
Supervisory Circuits
制造商
Manufacturer
Maxim(美信半导体)
类型
Type
Voltage Supervisory
安装风格
Mounting Style
SMD/SMT
封装 / 箱体
Package / Case
SOT-23-3
阈值电压
Threshold Voltage
2.5 V, 3 V, 3.3 V, 5 V
被监测输入数
Number of Inputs Monitored
1 Input
输出类型
Output Type
Active Low, Push-Pull
人工复位
Manual Reset
No Manual Reset
看门狗计时器
Watchdog Timers
No Watchdog
Battery Backup SwitchingNo Backup
Reset Delay Time240 ms
电源电压-最大
Supply Voltage - Max
5.5 V
最大工作温度
Maximum Operating Temperature
+ 105 C
最小工作温度
Minimum Operating Temperature
- 40 C
系列
Packaging
Reel
Chip Enable SignalsNo Chip Enable
高度
Height
0.94 mm
长度
Length
2.92 mm
工作电源电流
Operating Supply Current
24 uA
过电压阈值
Overvoltage Threshold
4.7 V
Pd-功率耗散
Pd - Power Dissipation
320 mW
Power Fail DetectionNo
电源电压-最小
Supply Voltage - Min
1.2 V
欠电压阈值
Undervoltage Threshold
4.56 V
宽度
Width
1.3 mm
单位重量
Unit Weight
0.050717 oz

文档预览

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MAX803/MAX809/
MAX810
3-Pin Microprocessor Reset Circuits
General Description
The MAX803/MAX809/MAX810 are microprocessor (μP)
supervisory circuits used to monitor the power supplies
in μP and digital systems. They provide excellent circuit
reliability and low cost by eliminating external components
and adjustments when used with +5V, +3.3V, +3.0V, or
+2.5V powered circuits.
These circuits perform a single function: they assert a
reset signal whenever the V
CC
supply voltage declines
below a preset threshold, keeping it asserted for at least
140ms after V
CC
has risen above the reset threshold.
Reset thresholds suitable for operation with a variety of
supply voltages are available.
The MAX803 has an open-drain output stage, while the
MAX809/MAX810 have push-pull outputs. The MAX803’s
open-drain
RESET
output requires a pullup resistor that
can be connected to a voltage higher than V
CC
. The
MAX803/MAX809 have an active-low
RESET
output,
while the MAX810 has an active-high RESET output. The
reset comparator is designed to ignore fast transients on
V
CC
, and the outputs are guaranteed to be in the correct
logic state for V
CC
down to 1V.
Low supply current makes the MAX803/MAX809/MAX810
ideal for use in portable equipment. The MAX803 is
available in a 3-pin SC70 package, and the MAX809/
MAX810 are available in 3-pin SC70 or SOT23 packages.
Benefits and Features
● Precision Monitoring of +2.5V, +3V, +3.3V, and
+5V Power-Supply Voltages
● Fully Specified Over Temperature
● Available in Three Output Configurations
• Open-Drain
RESET
Output (MAX803)
• Push-Pull
RESET
Output (MAX809)
• Push-Pull RESET Output (MAX810)
● 140ms (min) Power-On-Reset Pulse Width
● 12μA Supply Current
Guaranteed Reset Valid to V
CC
= +1V
● Power Supply Transient Immunity
● No External Components
● 3-Pin SC70 and SOT23 Packages
Selector Guide
and
Ordering Information
appear at end of data
sheet.
Typical Operating Circuit
V
CC
V
CC
V
CC
R
PULLUP
*
MAX803
MAX809
RESET
µP
RESET
INPUT
Applications
Computers
Controllers
Intelligent Instruments
Critical μP and μC Power Monitoring
Portable/Battery-Powered Equipment
Automotive
GND
GND
*MAX803 ONLY
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