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PDF ASM1233M Data sheet ( Hoja de datos )
| Número de pieza | ASM1233M | |
| Descripción | Voltage Supervisors Device | |
| Fabricantes | ON Semiconductor | |
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ASM1233D, ASM1233D-L,
ASM1233M
Low Power, 5 V/3.3 V,
mP Reset, Active LOW,
Open-Drain Output
Description
The ASM1233D−L/1233D/1233M are voltage supervisors with
low−power, 5/3.3 V mP Reset, with an active LOW, open−drain output.
Maximum supply current over temperature is 15 mA for 3.3 V devices
and 20 mA for 5 V devices.
The ASM1233D−L/1233D/1233M generates an active LOW reset
signal whenever the monitored supply is out of tolerance. A precision
reference and comparator circuit monitors power supply (VCC) level.
The tolerances are 5%, 10% and 15%. 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 350 ms to
allow the power supply and system microprocessor to stabilize.
The ASM1233D−L/1233D/1233M is designed with an open drain
output stage and operates over the extended industrial temperature
range. These devices are available in compact SOT−223, SO−8 and
TO−92 packages.
Other low power products in this family include ASM1810/11/12/
15/16/17.
Features
• Low Supply Current
• 15 mA Maximum (≤ 3.6 V), 20 mA Maximum (5.5 V)
• Automatically Restarts a Microprocessor after Power Failure
• 350 ms Reset Delay after VCC Returns to an In−tolerance Condition
• Active LOW Power−up Reset, 5 kW Internal Pull−up
• Precision Temperature−compensated Voltage Reference and
Comparator
• Eliminates External Components
• Low−cost SOT−223/SO−8/TO−92 Packages
• Operating Temperature: −40°C to +85°C
Applications
• Set−top Boxes
• Cellular Phones
• PDAs
• Energy Management Systems
• Embedded Control Systems
• Printers
• Single Board Computers
http://onsemi.com
SOIC−8
8 LEAD
CASE 751BD
SOT−223
4 LEAD
CASE 318E
TO−92
3 LEAD
CASE 29−11
PIN CONFIGURATIONS
RESET
VCC
NC
GND
1
2
3
4
SO−8
(Top View)
8
NC
7
NC
6
NC
5
NC
RESET
GND
VCC
2
4
1
3
SOT−223
(Top View)
GND
123
123
(Top View)
123
TO−92
ASM1233D−L
ASM1233D
TO−92
ASM1233M
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2011
August, 2011 − Rev. 3
1
Publication Order Number:
ASM1233D/D
1 page  
ASM1233D, ASM1233D−L, ASM1233M
Table 4. FAMILY SELECTION GUIDE
Part #
RESET Voltage (V)
ASM1810
4.620, 4.370, 4.120
ASM1811
4.620, 4.350, 4.130
ASM1812
4.620, 4.350, 4.130
ASM1815
3.060, 2.880, 2.550
ASM1816
3.060, 2.880, 2.550
ASM1817
3.060, 2.880, 2.550
ASM1233D
4.625, 4.375, 4.125
ASM1233M
4.625, 4.375, 2.720
ASM1233D−L
3.060, 2.880, 2.720
RESET Time (ms)
150
150
150
150
150
150
350
350
350
Output Stage
Push−Pull
Open−Drain
Push−Pull
Push−Pull
Open−Drain
Push−Pull
Open−Drain
Open−Drain
Open−Drain
RESET Polarity
LOW
LOW
HIGH
LOW
LOW
HIGH
LOW
LOW
LOW
Application Information
Operation − Power Monitor
The ASM1233D−L/1233D/1233M detects out−of−
tolerance Power supply conditions. It resets a processor
during powerup, Power−down and generates a reset to the
system Processor when the monitored power supply voltage
is below the reset threshold. When an out−of−tolerance VCC
voltage is detected, the RESET signal is asserted. On
power−up, RESET is kept active (LOW) for approximately
350 ms after the power supply voltage has reached the
selected tolerance. This allows the power supply and
microprocessor to stabilize before RESET is released.
Figure 3. Timing Diagram: Power−Up
Figure 4. Timing Diagram: Power−Down
http://onsemi.com
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| PDF Descargar | [ Datasheet ASM1233M.PDF ] | |
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