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ADM1810 데이터시트 PDF




Analog Devices에서 제조한 전자 부품 ADM1810은 전자 산업 및 응용 분야에서
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부품번호 ADM1810 기능
기능 Microprocessor Reset Circuits
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ADM1810 데이터시트, 핀배열, 회로
Data Sheet
Microprocessor Reset Circuits
ADM1810 to ADM1813/ADM1815 to ADM1818
FEATURES
Reliable low cost voltage monitor with reset output
Suitable for monitoring 2.5 V, 3 V, 3.3 V, and 5 V power
supply voltages
Reset threshold levels: 4.62 V, 4.35 V, 3.06 V, 2.88 V, 2.55 V,
2.31 V, and 2.18 V typical
Active high and low push-pull output choices: ADM1810,
ADM1812, ADM1815, and ADM1817
Open-drain with internal pull-up resistor output choices:
ADM1811, ADM1813, ADM1816, and ADM1818
Can be used with a manual push-button to generate a reset:
ADM1813, ADM1818
Initialization of microprocessor systems with added safety
Available in 3-lead SOT-23 and SC70 packages
APPLICATIONS
Microprocessor systems
Computers
Controllers
Intelligent instruments
Automotive systems
GENERAL DESCRIPTION
The ADM181x range of voltage monitoring circuits is used in
any application where an electronic system needs to be reset
when a voltage increases above or below a predetermined value.
Because of the reset delay time incorporated into the ADM181x
series, these devices provide a safe startup for electronic systems.
Before a system initializes, the power supply must stabilize.
Using the ADM181x series ensures that there are typically 150 ms
for the power supply to stabilize before the system resets and
safe system initialization begins.
The ADM181x series of microprocessor reset circuits are
available in low cost, space-saving SOT-23 and SC70 packages.
FUNCTIONAL BLOCK DIAGRAMS
ADM1810/ADM1815
VCC
GND
VCC
TOLERANCE
BIAS
TC
REFERENCE
150ms
DELAY
RST
VCC
GND
ADM1811/ADM1816
5.5k
VCC
TOLERANCE
BIAS
TC
REFERENCE
150ms
DELAY
RST
ADM1812/ADM1817
VCC
GND
VCC
TOLERANCE
BIAS
TC
REFERENCE
150ms
DELAY
RST
VCC
GND
ADM1813/ADM1818
VCC
TOLERANCE
BIAS
TC
REFERENCE
RESET
MONITOR
5.5k
150ms
DELAY
RST
Figure 1.
Rev. F
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©1999–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com




ADM1810 pdf, 반도체, 판매, 대치품
ADM1810 to ADM1813/ADM1815 to ADM1818
Data Sheet
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 2.
Parameter
VCC
Input Current
Operating Temperature Range
Storage Temperature Range
θJA Thermal Impedance, SOT-23
θJA Thermal Impedance, SC70
Lead Temperature (Soldering, 10 sec)
Vapor Phase (60 sec)
Infrared (15 sec)
Rating
−0.3 V to +6.0 V
20 mA
−40°C to +105°C
−65°C to +150°C
270°C/W
146°C/W
300°C
215°C
220°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
Rev. F | Page 4 of 12

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ADM1810 전자부품, 판매, 대치품
Data Sheet
ADM1810 to ADM1813/ADM1815 to ADM1818
THEORY OF OPERATION
TIMING DIAGRAMS FOR ALL DEVICES
The following two timing diagrams are valid for ADM1810,
ADM1811, ADM1812, ADM1813, ADM1815, ADM1816,
ADM1817, and ADM1818.
VCC
VCC TRIP POINT (MAX)
VCC TRIP POINT
VCC TRIP POINT (MIN)
RST
VCC TO RESET
DELAY
VOL
Figure 9. Power-Down Timing Diagram
VCC TRIP POINT (MIN)
VCC
VCC TRIP POINT (MAX)
VCC TRIP POINT
RESET ACTIVE TIMEOUT
RST
Figure 10. Power-Up Timing Diagram
ADM1813 AND ADM1818
The ADM1813 and ADM1818 are low cost voltage monitoring
devices featuring an open-drain with internal pull-up resistor
output and optional push-button reset function.
VCC
ADM1813/
ADM1818
VCC
RST
MICRO-
PROCESSOR
RESET
GND
Figure 11. ADM1813/ADM1818 Typical Application
An optional push-button reset switch can be connected
between RST and ground. Pressing this switch pulls the reset
output low. If the push-button reset button pulls the RST output
low for a period greater than 1 µs when the reset button releases
the RST line to float high, then the RST line stays low for another
150 ms typical.
PUSH-BUTTON TIME
RESET TIMEOUT
VOLTAGE
INPUT HIGH
VOLTAGE
INPUT LOW
Figure 12. Push-Button Reset Timing Diagram
The ADM1818 range has 2.88 V and 2.55 V (typical) trip point
options that allow the user to monitor 3.3 V and 3 V supplies.
For 5 V monitoring requirements, the ADM1813 range has 4.62 V
and 4.35 V (typical) trip point options.
ADM1810, ADM1812, ADM1815, AND ADM1817
The ADM1812 is a 5 V supply monitor with an active high
push-pull output and trip point options of 4.62 V and 4.35 V
typical. The ADM1810 is similar to the ADM1812, except that
the ADM1810 has an active low push-pull output stage. The
ADM1817 is suitable for monitoring 3.3 V, 3 V, and 2.5 V
supplies, with an active high push-pull output and trip point
options of 3.06 V, 2.88 V, 2.55 V, 2.31 V, and 2.18 V typical.
The ADM1815 is similar to the ADM1817, except that the
ADM1815 has an active low push-pull output stage.
The ADM1810/ADM1812/ADM1815/ADM1817 can connect
directly to most microprocessor reset inputs without the need
for external components.
VCC
ADM1810/
ADM1812/
ADM1815/
ADM1817
VCC
RST/RST
GND
MICRO-
PROCESSOR
RESET
Figure 13. ADM1810/ADM1812/ADM1815/ADM1817 Typical Application
ADM1811 AND ADM1816
The ADM1811 is a 5 V supply monitor with an active low open-
drain with internal pull-up resistor output and trip point options of
4.62 V and 4.35 V typical. The ADM1816 also has an active low
open-drain with internal pull-up resistor output but is suitable
for monitoring lower voltage supplies of 3.3 V, 3 V, and 2.5 V.
VCC
ADM1811/
ADM1816
MICRO-
PROCESSOR
VCC
GND
RST
RESET
Figure 14. ADM1811/ADM1816 Typical Application
Rev. F | Page 7 of 12

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