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參數(shù)資料
| 型號： | IMP811 |
| 廠商： | IMP INC. |
| 英文描述： | 4-pin レP Voltage Supervisor with Manual Reset |
| 中文描述： | 4針，帶有手動復(fù)位レP的電壓監(jiān)控 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 140K |
| 代理商： | IMP811 |
1999 IMP, Inc.
408-432-9100/www.impweb.com
1
Key Features
Applications
4-Pin
μ
μ
wit
h Manual R
The IMP811/IMP812 are low-power supervisors designed to monitor
voltage levels of 3.0V, 3.3V and 5.0V power supplies in low-power
microprocessor (μP), microcontroller (μC) and digital systems. Each fea-
tures a debounced manual reset input. The IMP811/812 are improved
drop-in replacements for the Maxim MAX811/812 with extended
temperature specifications to 105°C.
P V
olt
ag
e Super
eset
visor
N
Computers and controllers
N
Embedded controllers
N
Battery operated systems
N
Intelligent instruments
N
Wireless communication systems
N
PDAs and handheld equipment
N
Improved Maxim MAX811/MAX812 replacement
—
Specified to 105°C
—
New 4.0V threshold option
N
6
μ
A supply current
N
Monitor 5V, 3.3V and 3V supplies
N
Manual reset input
N
140ms min. reset pulse width
N
Guaranteed over temperature
N
Active-LOW reset valid with 1.1V supply
(IMP811)
N
Small 4-pin SOT-143 package
N
No external components
N
Power-supply transient-immune design
Block Diagrams
IMP811
(IMP812)
VCC
VCC
VCC
μ
C or
μ
P
GND
GND
RESET
(RESET)
Manual
Reset
MR
811/12_01.eps
RESET
Input
A reset signal is issued if the power supply voltage drops below a preset
threshold and is asserted for at least 140ms after the supply has risen
above the reset threshold. The IMP811 has an active-low output RESET
that is guaranteed to be in the correct state for V
CC
down to 1.1V. The
IMP812 has an active-high output RESET. The reset comparator is
designed to ignore fast transients on V
CC
.
Low power consumption makes the IMP811/IMP812 ideal for use in
portable and battery-operated equipment. Available in a compact 4-pin
SOT143 package, the devices use minimal board space.
Six voltage thresholds are available to support 3V to 5V systems:
IMP8
1
1
1
1
, IMP8
1
1
2
2
P
OWER
M
ANAGEMENT
Reset Threshold
Suffix
L
M
J
T
S
R
Voltage (V)
4.63
4.38
4.00
3.08
2.93
2.63
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| IMP811JEUS-T | 制造商:Imp Inc 功能描述:4-Pin P Voltage Supervisor with Manual |
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