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Home ›  AA30 > ADM1812-5ART-REEL7-ADM1815-10ARTZ-RL7-ADM1815-20ARTZ-RL7-ADM1815-5AKS-RL7-ADM1815-R22ART-RL7-ADM1816-5ART-REEL7-ADM1816-R22ART-RL7-ADM1816-R23ART-RL7-ADM1817-5ART-REEL7-ADM1818-10AKS-RL7-ADM1818-20AKS-RL7,Microprocessor Supervisory in SOT-23 with Low Active OpenDrain Output Choices
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ADM1812-5ART-REEL7 |ADM18125ARTREEL7ADN/a500avaiMicroprocessor Supervisory in SOT-23 with Active High and Low Push-Pull Output, Positive Reset Output
ADM1815-10ARTZ-RL7 |ADM181510ARTZRL7ADN/a360avaiMicroprocessor Supervisory in SOT-23 with Active Low Push-Pull Output Choices
ADM1815-20ARTZ-RL7 |ADM181520ARTZRL7ADN/a5934avaiMicroprocessor Supervisory in SOT-23 with Active Low Push-Pull Output Choices
ADM1815-5AKS-RL7 |ADM18155AKSRL7ADN/a248avaiMicroprocessor Supervisory in SOT-23 with Active Low Push-Pull Output Choices
ADM1815-R22ART-RL7 |ADM1815R22ARTRL7ADN/a320avaiMicroprocessor Supervisory in SOT-23 with Active Low Push-Pull Output Choices
ADM1816-5ART-REEL7 |ADM18165ARTREEL7ADN/a28160avaiMicroprocessor Supervisory in SOT-23 with Low Active OpenDrain Output Choices
ADM1816-5ART-REEL7 |ADM18165ARTREEL7ADIN/a300avaiMicroprocessor Supervisory in SOT-23 with Low Active OpenDrain Output Choices
ADM1816-R22ART-RL7 |ADM1816R22ARTRL7ADN/a3900avaiMicroprocessor Supervisory in SOT-23 with Low Active OpenDrain Output Choices
ADM1816-R23ART-RL7 |ADM1816R23ARTRL7N/AN/a809avaiMicroprocessor Supervisory in SOT-23 with Low Active OpenDrain Output Choices
ADM1817-5ART-REEL7 |ADM18175ARTREEL7ADN/a28160avaiMicroprocessor Supervisory in SOT-23 with Active High Push-Pull Output
ADM1818-10AKS-RL7 |ADM181810AKSRL7ADN/a645avaiMicroprocessor Supervisory in SOT-23 with Manual Push Button Option
ADM1818-20AKS-RL7 |ADM181820AKSRL7ADN/a277avaiMicroprocessor Supervisory in SOT-23 with Manual Push Button Option


ADM1816-5ART-REEL7 ,Microprocessor Supervisory in SOT-23 with Low Active OpenDrain Output ChoicesSpecifications subject to change without notice.–2– REV. CADM1810–ADM1813/ADM1815–ADM1818ABSOLUTE M ..
ADM1816-5ART-REEL7 ,Microprocessor Supervisory in SOT-23 with Low Active OpenDrain Output ChoicesGENERAL DESCRIPTIONADM1812/ADM1817The ADM181x range of voltage monitoring circuits can be usedVCCin ..
ADM1816-R22ART-RL7 ,Microprocessor Supervisory in SOT-23 with Low Active OpenDrain Output ChoicesMicroprocessor Reset CircuitsADM1810–ADM1813/ADM1815–ADM1818
ADM1816-R23ART-RL7 ,Microprocessor Supervisory in SOT-23 with Low Active OpenDrain Output ChoicesGENERAL DESCRIPTIONADM1812/ADM1817The ADM181x range of voltage monitoring circuits can be usedVCCin ..
ADM1817-5ART-REEL7 ,Microprocessor Supervisory in SOT-23 with Active High Push-Pull OutputSPECIFICATIONS(V = Full Operating Range, T = –40C to +105C, unless otherwise noted.)CC AParameter ..
ADM1818-10AKS-RL7 ,Microprocessor Supervisory in SOT-23 with Manual Push Button OptionAPPLICATIONSRSTMicroprocessor SystemsVCCComputersTOLERANCEBIASControllers150msDELAYIntelligent Inst ..
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ADM1812-5ART-REEL7-ADM1815-10ARTZ-RL7-ADM1815-20ARTZ-RL7-ADM1815-5AKS-RL7-ADM1815-R22ART-RL7-ADM1816-5ART-REEL7-ADM1816-R22ART-RL7-ADM1816-R23ART-RL7-ADM1817-5ART-REEL7-ADM1818-10AKS-RL7-ADM1818-20AKS-RL7
Microprocessor Supervisory in SOT-23 with Active High and Low Push-Pull Output
REV.C
Microprocessor Reset Circuits
FUNCTIONAL BLOCK DIAGRAMS
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 (Typ)
Active High and Low Push-Pull Output Choices
(ADM1810, ADM1812, ADM1815, and ADM1817)
Open-Drain Output Choices (ADM1811, ADM1813,
ADM1816, and ADM1818)
Can Be Used with a Manual Push-Button to Generate
aReset (ADM1813, ADM1818)
Initialize 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 can be 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 can provide a safe startup for electronic
systems. Before a system initializes, the power supply must stabi-
lize. Using the ADM181x series ensures that there are typically
150ms for the power supply to stabilize before the system is reset
and safe system initialization begins.
The ADM181x series of microprocessor reset circuits are avail-
able in low cost, space-saving SOT-23 and SC70 packages.
ADM1810–ADM1813/ADM1815–ADM1818 SPECIFICATIONS
(VCC = Full Operating Range, TA = –40�C to +105�C, unless otherwise noted.)

VCC TRIP POINT
INTERNAL PULL-UP RESISTOR
Specifications subject to change without notice.
PIN CONFIGURATION
PIN FUNCTION DESCRIPTIONS
ABSOLUTE MAXIMUM RATINGS*

(TA = 25°C, unless otherwise noted.)
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V to +6.0 V
Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Operating Temperature Range . . . . . . . . . . –40°C to +105°C
�JA Thermal Impedance, SOT-23 . . . . . . . . . . . . . . .270°C/W
�JA Thermal Impedance, SC70 . . . . . . . . . . . . . . . . .146°C/W
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . 300°C
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum ratings
for extended periods of time may affect device reliability.
CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
ADM1810–ADM1813/ADM1815–ADM1818 features proprietary ESD protection circuitry,
ORDERING GUIDE

*Only available in reels.
ADM1810–ADM1813/ADM1815–ADM1818
ORDERING GUIDE (continued)

*Only available in reels.
TPC 1.Supply Current vs. Temperature
TPC 2.Power-Down Reset Delay vs. Temperature
TPC 3.Power-Up Reset Timeout vs. Temperature
TPC 4.Normalized Reset Threshold vs. Temperature
TPC 5.Maximum Transient Duration without Causing
a Reset Pulse vs. Reset Comparator Overdrive
ADM1810–ADM1813/ADM1815–ADM1818
Figure 1.Power-Down Timing Diagram
Figure 2.Power-Up Timing Diagram
ADM1813 AND ADM1818

The ADM1813 and ADM1818 are low cost voltage monitoring
devices featuring an open-drain output and optional push-
button reset function.
Figure 3.ADM1813/ADM1818 Typical Application
An optional push-button reset switch can be connected between
RST and ground. Pressing this switch will pull the reset output
low. If the push-button reset button pulls the RST output low for
a period greater than 1µs, then, when the reset button releases
the RST line to float high, the RST line will stay low for a further
150ms typical.
Figure 4.Push-Button Reset Timing Diagram
The ADM1818 range has 2.88 V and 2.55 V (typ) 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 4.62V
and 4.35 V (typ) 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 (typ).
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 2.5V
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 (typ). 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 be
connected directly to most microprocessor reset inputs without
the need for external components.
Figure 5.ADM1810/ADM1812/ADM1815/ADM1817
Typical Application
ADM1811 AND ADM1816

The ADM1811 is a 5 V supply monitor with an active low open-
drain output and trip point options of 4.62 V and 4.35V (typ).
The ADM1816 also has an active low open-drain output but is
suitable for monitoring lower voltage supplies of 3.3 V, 3V,
and2.5V.
Figure 6.ADM1811/ADM1816 Typical Application
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