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IMP1815 Datasheet(PDF) 31 Page - A1 PROs co., Ltd.

Part # IMP1815
Description  Low Power,, 5V - Ressett- Acttiive LOW,, Open--Draiin Outtputt
PDF  36 Pages
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Manufacturer  A1PROS [A1 PROs co., Ltd.]
Direct Link  http://www.a1pros.co.kr
Logo A1PROS - A1 PROs co., Ltd.

IMP1815 Datasheet(HTML) 31 Page - A1 PROs co., Ltd.

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©
1999 IMP, Inc.
408-432-9100/www.impweb.com
1
Key Features
Applications
x
Set-top boxes
x
Cellular phones
x
PDAs
x
Energy management systems
x
Embedded control systems
x
Printers
x
Single board computers
x
Improved Dallas DS1233M replacement
— 60% lower maximum supply current
x
Low Supply Current
— 20µA maximum (5.5V)
— 15µA maximum (3.6V)
x
Automatically restarts a microprocessor after
power failure
x
350ms reset delay after VCC returns to an
in-tolerance condition
x
Active LOW power-up reset, 5k
Ω internal pull-up
x
Precision temperature-compensated voltage
reference and comparator
x
Eliminates external components
x
Pin function compatible with the Motorola
MC33064, MC34064, MC33164 and MC34164
x
Motorola 68xxx and HC16 compatible
x
Low-cost TO-92 package
x
Compact surface mount SO-8 package
x
Operating temperature –40
°C to +85°C
Block Diagram
–
+
1233M_01.eps
VCC
RESET
GND
5.0k
Ω
Supply
Tolerance
Bias
IMP1233M
Delay
350ms Typical
Reference
IMP1
IMP1233M
233M
POWER MANAGEMENT
Lo
Low P
w Po
ow
wer
er, 5V/3.0V
, 5V/3.0V µ
µP R
P Reset
eset
– A
– Activ
ctive L
e LO
OW
W, Open-Dr
, Open-Drain Output
ain Output
– 350ms R
– 350ms Reset P
eset Per
eriod
iod
The IMP1233M supply voltage monitor is an improved, low-power
replacement for the Dallas Semiconductor DS1233M. Maximum supply
current over temperature is a low 20
µA, representing 60 percent lower
power as compared to the DS1233M.
The IMP1233M issues an active LOW reset signal whenever the moni-
tored supply is out-of-tolerance. A precision reference and comparator
circuit monitor power supply (VCC) level. Tolerance level options are
5- and 10-percent for a 5V power supply. The tolerance is 15-percent for
the 3.3V, IMP1233M. When an out-of-tolerance condition is detected, an
internal power-fail signal is generated which forces an active LOW reset
signal. After VCC returns to an in-tolerance condition, the reset signal
remains active for 350ms to allow the power supply and system micro-
processor to stabilize.
The IMP1233M is designed with a open-drain output stage and operates
over the extended industrial temperature range. Devices are available in
the compact surface mount SO-8 package and a 3-lead TO-92 package.
Other low power products in this family include the IMP1810/11/12/15/
16/17 and IMP1233D.
Typical Application
IMP1233M
Microprocessor
RESET
RESET
1233M_02.eps
VCC
GND
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Family Selection Guide



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