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參數(shù)資料
| 型號： | IMP1817 |
| 廠商： | IMP INC. |
| 英文描述： | Low Power, 3.3V/3.0V μP Reset -Active HIGH, Push-Pull Output(低功耗,3.3V/3.0VμP復(fù)位,高有效,推拉輸出,電源電壓監(jiān)視器) |
| 中文描述： | 低功耗，3.3V/3.0V微處理器復(fù)位，高電平有效，推挽式輸出（低功耗，3.3V/3.0VμP復(fù)位，高有效，推拉輸出，電源電壓監(jiān)視器） |
| 文件頁數(shù)： | 1/4頁 |
| 文件大?。?/td> | 217K |
| 代理商： | IMP1817 |
1999 IMP, Inc.
408-432-9100/www.impweb.com
1
Key Features
Applications
N
Set-top boxes
N
Cellular phones
N
PDAs
N
Energy management systems
N
Embedded control systems
N
Printers
N
Single board computers
N
Improved Dallas DS1817 replacement
— Over 50% lower maximum supply current
N
Low Supply Current
— 20μA maximum (5.5V)
— 15μA maximum (3.6V)
N
Automatically restarts a microprocessor after
power failure
N
150ms reset delay after V
CC
returns to an
in-tolerance condition
N
Active HIGH power-up reset
N
Precision temperature-compensated voltage
reference and comparator
N
Eliminates external components
N
Low-cost TO-92 package
N
Compact surface mount SOT-23 package
N
Push-Pull output for minimum current drain
N
Operating temperature –40
°
C to +85
°
C
Block Diagram
–
+
1817_01.eps
V
CC
1
RESET
GND
3
2
Supply
Tolerance
Bias
IMP1817
Reference
Delay
150ms
Typical
IMP1
8
8
1
1
7
7
P
OWER
M
ANAGEMENT
Lo
w P
o
o
w
w
er
er
, 3.3V/3.0V
μ
μ
– A
ctiv
e HIGH, Push-Pull Output
P R
eset
The IMP1817 supply voltage monitor is an improved, low-power
replacement for the Dallas Semiconductor DS1817. Maximum supply
current over temperature is a low 15
μ
A, representing over 50 percent
lower power as compared to the DS1817.
The IMP1817 issues an active HIGH reset signal whenever the moni-
tored supply is out-of-tolerance. A precision reference and comparator
circuit monitor power supply (V
CC
) level. Tolerance level options are 5-,
10- and 20-percent. When an out-of-tolerance condition is detected, an
internal power-fail signal is generated which forces an active HIGH reset
signal. After V
CC
returns to an in-tolerance condition, the reset signal
remains active for 150ms to allow the power supply and system micro-
processor to stabilize.
The IMP1817 is designed with a push-pull output stage and operates
over the extended industrial temperature range. Devices are available in
compact surface mount SOT-23 packages and 3-lead TO-92 packages.
Other low power products in this family include the IMP1810/11/12/15/16,
IMP1233D and IMP1233M.
Typical Application
IMP1817
Microprocessor
RESET
RESET
1817_02.eps
VCC
GND
t
P
8
1
P
8
1
P
M
1
P
M
I
1
P
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I
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,
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,
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8
,
8
8
,
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8
,
7
3
,
7
3
T
(
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i
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T
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5
1
5
1
5
1
5
1
5
1
5
1
5
3
5
3
E
(
S
E
R
)
0
0
0
0
0
0
0
0
t
e
g
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u
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p
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-
e
p
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p
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a
u
P
p
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T
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S
E
R
y
P
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G
I
H
O
L
O
L
G
I
H
O
L
O
L
0
1
2
5
6
7
3
3
1
1
1
1
1
1
3
3
M
I
I
0
0
0
0
0
0
5
0
2
3
3
5
5
5
2
2
1
1
1
5
5
5
1
7
,
2
,
2
,
2
,
6
,
6
,
6
,
2
,
2
6
6
6
0
0
0
6
6
W
W
H
W
W
H
W
W
n
l
P
l
P
n
D
l
P
n
D
n
D
8
8
8
8
2
2
D
M
Family Selection Guide
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IMP1832 | 3.3V レP Power Suppl Monitor and Reset Circuit |
| IMP1832S | 3.3V レP Power Suppl Monitor and Reset Circuit |
| IMP1832SEMA | 3.3V レP Power Suppl Monitor and Reset Circuit |
| IMP1834 | Dual 5V and 3.3V uP Power Supply Supervisors w/Manual Reset |
| IMP1834A | Dual 5V and 3.3V P Power Supply Supervisors w/Manual Reset(with Push-Pull and Open-Drain Outputs and Selectable Trip Point tolerance)(5V和3.3V雙μP電源電壓監(jiān)視器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IMP1832 | 制造商:IMP 制造商全稱:IMP 功能描述:3.3V レP Power Suppl Monitor and Reset Circuit |
| IMP1832S | 制造商:IMP 制造商全稱:IMP 功能描述:3.3V レP Power Suppl Monitor and Reset Circuit |
| IMP1832SEMA | 制造商:A1PROS 制造商全稱:A1 PROs co., Ltd. 功能描述:3..3V μP Power Supplly Moniittor and Ressett Ciircuiitt |
| IMP1834 | 制造商:A1PROS 制造商全稱:A1 PROs co., Ltd. 功能描述:Duall 5V and 3..3V mP Power Supplly Superviissorss w/Manuall Ressett |
| IMP1834A | 制造商:A1PROS 制造商全稱:A1 PROs co., Ltd. 功能描述:Duall 5V and 3..3V mP Power Supplly Superviissorss w/Manuall Ressett |
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