IMP1233D IMP Inc, IMP1233D Datasheet

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IMP1233D

Manufacturer Part Number
IMP1233D
Description
Low Power 5V/3.0V P Reset
Manufacturer
IMP Inc
Datasheet
1.IMP1233D.pdf (6 pages)
2000 © IMP, Inc.
The IMP1233D supply voltage monitor is an improved, low-power
replacement for the Dallas Semiconductor DS1233D. Maximum supply
current over temperature is a low 20µA, representing over 60 percent
lower power as compared to the DS1233D.
The IMP1233D issues an active LOW reset signal whenever the moni-
tored supply is out-of-tolerance. A precision reference and comparator
circuit monitor power supply (V
10- and 15-percent. When an out-of-tolerance condition is detected, an
internal power-fail signal is generated which forces an active LOW reset
signal. After V
remains active for 350ms to allow the power supply and system micro-
processor to stabilize.
The IMP1233D is designed with a open-drain output stage and operates
over the extended industrial temperature range. Devices are available in
compact surface mount SOT-223 packages.
Other low power products in this family include the IMP1810/11/12/15/
16/17 and IMP1233M.
I
I
I
I
I
I
I
I
M
M
M
M
M
M
M
M
Family Selection Guide
Block Diagram
P
P
P
P
P
P
P
P
1
1
1
1
1
1
1
1
Reference
Tolerance
8
8
8
8
8
8
2
2
Supply
1
1
1
1
1
1
3
3
Bias
V
0
1
2
5
6
7
3
3
CC
D
M
4
4
4
3
3
3
4
4
6 .
6 .
6 .
0 .
0 .
0 .
6 .
6 .
CC
2
2
2
6
6
6
2
2
, 0
, 0
, 0
, 0
, 0
, 0
, 5
, 5
returns to an in-tolerance condition, the reset signal
+
–
4
4
4
2
2
2
4
4
3 .
3 .
3 .
8 .
8 .
8 .
3 .
3 .
7
5
5
8
8
8
7
7
, 0
, 0
, 0
, 0
, 0
, 0
, 5
, 5
4
4
4
2
2
2
4
2
1 .
1 .
1 .
5 .
5 .
5 .
1 .
7 .
2
3
3
5
5
5
2
2
0
0
0
0
0
0
5
0
IMP1233D
CC
350ms Typical
) level. Tolerance level options are 5-,
Delay
1
1
1
1
1
1
3
3
5
5
5
5
5
5
5
5
0
0
0
0
0
0
0
0
GND
O
O
O
O
P
P
P
P
p
p
p
p
u
u
u
u
e
e
e
e
s
s
s
s
408-432-9100/www.impweb.com
- n
- n
- n
- n
h
h
h
h
P -
D
P -
P -
D
P -
D
D
a r
a r
a r
a r
l l u
l l u
l l u
l l u
5.0k
n i
n i
n i
n i
1233D_01.eps
9
RESET
I H
I H
L
L
L
L
L
L
O
O
O
O
O
O
G
G
W
W
W
W
W
W
H
H
N Improved Dallas DS1233D replacement
N Low Supply Current
N Automatically restarts a microprocessor after
N 350ms reset delay after V
N Active LOW power-up reset, 5kΩ internal pull-up
N Precision temperature-compensated voltage
N Eliminates external components
N Motorola 68xxx and HC16 compatible
N Compact surface mount SOT-223 package
N Operating temperature – 40°C to +85°C
N Set-top boxes
N Cellular phones
N PDAs
N Energy management systems
N Embedded control systems
N Printers
N Single board computers
IMP1233D
— Over 60% lower maximum supply current
— 20µA maximum (5.5V)
— 15µA maximum (3.6V)
power failure
in-tolerance condition
reference and comparator
V CC
GND
RESET
IMP1
IMP1
Typical Application
Key Features
Applications
233D
233D
CC
RESET
returns to an
Microprocessor
1233D_02.eps
1

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IMP1233D Summary of contents

Page 1

... Dallas Semiconductor DS1233D. Maximum supply current over temperature is a low 20µA, representing over 60 percent lower power as compared to the DS1233D. The IMP1233D issues an active LOW reset signal whenever the moni- tored supply is out-of-tolerance. A precision reference and comparator circuit monitor power supply (V ) level ...

Page 2

... Pin Configuration RESET 2 IMP1233D-X GND Pin Descriptions — Package Marking Code Ordering Information ...

Page 3

... V Output Voltage V Output Current I Operating Current I Operating Current I V Trip Point (IMP1233D- CCTP V Trip Point (IMP1233D-10 CCTP V Trip Point (IMP1233D-15 CCTP Internal Pull-Up Resistor R Output Capacitance C RESET Active Time t RESET V Detect to RESET Low t CC RPD V Slew Rate ...

Page 4

... D Application Information Operation – Power Monitor The IMP1233D detects out-of-tolerance power supply conditions. It resets a processor during power-up and issues a reset to the sys- tem processor when the monitored power supply voltage is below the reset threshold (power-down). When an out-of-tolerance V voltage is detected, the RESET signal is asserted ...

Page 5

2000 © IMP, Inc ...

Page 6

IMP, Inc. Corporate Headquarters 2830 N. First Street San Jose, CA 95134-2071 Tel: 408-432-9100 Tel: 800-438-3722 Fax: 408-434-0335 e-mail: info@impinc.com http://www.impweb.com The IMP logo ...

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