ADM1818 Analog Devices, ADM1818 Datasheet

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ADM1818

Manufacturer Part Number
ADM1818
Description
Microprocessor Supervisory in SOT-23 with Manual Push Button Option
Manufacturer
Analog Devices
Datasheet

Specifications of ADM1818

# Of Monitored Voltages
1
Backup-battery Switch
No
Manual Reset Capability
Yes
Package
SC70,SOT
Reset Threshold Summary
5 Options--2.18 to 3.06V
Reset Output-stage
Active-Low/Open-Drain
Min Reset Timeout (ms)
100
Watchdog Timer
No

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FEATURES
Reliable low cost voltage monitor with reset output
Suitable for monitoring 2.5 V, 3 V, 3.3 V, and 5 V power
Reset threshold levels: 4.62 V, 4.35 V, 3.06 V, 2.88 V, 2.55 V,
Active high and low push-pull output choices: ADM1810,
Open-drain output choices: ADM1811, ADM1813, ADM1816,
Can be used with a manual push-button to generate a reset:
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.
Rev. E
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.
Trademarks and registered trademarks are the property of their respective owners.
supply voltages
2.31 V, and 2.18 V typical
ADM1812, ADM1815, and ADM1817
and ADM1818
ADM1813, ADM1818
ADM1810 to ADM1813/ADM1815 to ADM1818
Microprocessor Reset Circuits
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
GND
GND
GND
GND
V
V
V
V
CC
CC
CC
CC
FUNCTIONAL BLOCK DIAGRAMS
TOLERANCE
TOLERANCE
REFERENCE
TOLERANCE
REFERENCE
TOLERANCE
REFERENCE
REFERENCE
BIAS
BIAS
BIAS
BIAS
V
V
V
V
TC
TC
TC
TC
CC
CC
CC
CC
©1999–2008 Analog Devices, Inc. All rights reserved.
ADM1810/ADM1815
ADM1811/ADM1816
ADM1812/ADM1817
ADM1813/ADM1818
Figure 1.
MONITOR
RESET
DELAY
DELAY
DELAY
DELAY
150ms
150ms
150ms
150ms
5.5kΩ
5.5kΩ
www.analog.com
RST
RST
RST
RST

Related parts for ADM1818

ADM1818 Summary of contents

Page 1

... Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Microprocessor Reset Circuits ADM1810 to ADM1813/ADM1815 to ADM1818 FUNCTIONAL BLOCK DIAGRAMS V CC ...

Page 2

... Edits to ADM1810, ADM1812, ADM1815, and ADM1817 Section ............................................................................. 5 Edits to ADM1811 and ADM1816 Section ................................... 5 Updated Outline Dimensions .......................................................... 6 3/02—Rev Rev. A. Addition of Table .............................................................................. 1 Edits to Ordering Guide ................................................................... 3 Addition of New Text to ADM1813 and ADM1818 Section ...... 4 4/99—Rev.0: Initial Version Rev Page           ...

Page 3

... ADM1817-20, ADM1818-20 ADM1815-R23, ADM1816-R23, ADM1817-R23, ADM1818-R23 ADM1815-R22, ADM1816-R22, ADM1817-R22, ADM1818-R22 INTERNAL PULL-UP RESISTOR ADM1811/ADM1816 ADM1813/ADM1818 OUTPUT CAPACITANCE RESET ACTIVE TIME V DETECT TO RESET CC Falling Rising PUSH-BUTTON DETECT TO RST PUSH-BUTTON RESET ADM1810 to ADM1813/ADM1815 to ADM1818 Min Typ Max Unit 1 5.5 V 1.2 5 μ μA 350 μ ...

Page 4

... ADM1810 to ADM1813/ADM1815 to ADM1818 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 2. Parameter V CC Input Current Operating Temperature Range Storage Temperature Range θ Thermal Impedance, SOT-23 JA θ Thermal Impedance, SC70 JA Lead Temperature (Soldering, 10 sec) Vapor Phase (60 sec) Infrared (15 sec) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...

Page 5

... RST GND ADM1810 to ADM1813/ADM1815 to ADM1818 GND 3 Function Active High Reset Output. RST remains high while V threshold and remains high for 150 ms typical after V threshold. Applies to the ADM1812 and ADM1817 only. Active Low Reset Output. RST remains low while V ...

Page 6

... ADM1810 to ADM1813/ADM1815 to ADM1818 TYPICAL PERFORMANCE CHARACTERISTICS 5. –40 – TEMPERATURE (°C) Figure 4. Supply Current vs. Temperature 900 800 700 600 500 VOD = 20mV 400 300 VOD = 125mV 200 100 VOD = 200mV 0 –40 – TEMPERATURE (° ...

Page 7

... RST line stays low for another 150 ms typical. ADM1810 to ADM1813/ADM1815 to ADM1818 VOLTAGE INPUT LOW The ADM1818 range has 2.88 V and 2.55 V (typical) trip point TRIP POINT (MIN) 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 ...

Page 8

... ADM1810 to ADM1813/ADM1815 to ADM1818 OUTLINE DIMENSIONS 1.40 1.20 0.100 0.013 SEATING PLANE 1.35 1.25 1.15 0.10 MAX 3.04 2.80 3 2.64 2. 0.60 1.03 0.45 0.89 2.05 1.78 1.12 0.89 0.180 0.085 0.51 0.37 COMPLIANT TO JEDEC STANDARDS TO-236-AB Figure 15. 3-Lead Small Outline Transistor Package [SOT-23] (RT-3) Dimensions shown in millimeters 2.20 2.00 1.80 2.40 3 2.10 1. PIN 1 0.65 BSC 0.40 1.00 1.10 0.10 0.80 0.80 0.26 0.40 0.10 SEATING 0.25 PLANE 0.10 COPLANARITY ALL DIMENSIONS COMPLIANT WITH EIAJ SC70 Figure 16. 3-Lead Thin Shrink Small Outline Transistor Package [SC70] ...

Page 9

... ADM1812-10AKSZ-RL7 −40°C to +105°C ADM1812-10ART-REEL −40°C to +105°C ADM1812-10ART-RL7 −40°C to +105°C ADM1812-10ARTZ-RL 2 −40°C to +105°C 2 ADM1812-10ARTZ-RL7 −40°C to +105°C ADM1810 to ADM1813/ADM1815 to ADM1818 Trip Point Package Option 4.62 V KS-3 (SC70) 4.62 V KS-3 (SC70) 4.62 V KS-3 (SC70) 4.62 V KS-3 (SC70) 4.62 V RT-3 (SOT-23) 4.62 V RT-3 (SOT-23) 4 ...

Page 10

... ADM1810 to ADM1813/ADM1815 to ADM1818 1 Model Temperature Range ADM1813-5AKS-REEL −40°C to +105°C ADM1813-5AKS-RL7 −40°C to +105°C 2 ADM1813-5AKSZ-REEL −40°C to +105°C 2 ADM1813-5AKSZ-RL7 −40°C to +105°C ADM1813-5ART-RL −40°C to +105°C ADM1813-5ART-RL7 −40°C to +105°C 2 ADM1813-5ARTZ-RL −40°C to +105°C ...

Page 11

... ADM1817-5AKSZ-RL7 −40°C to +105°C ADM1817-5ART-REEL −40°C to +105°C ADM1817-5ART-REEL7 −40°C to +105°C ADM1817-5ARTZ-REEL 2 −40°C to +105°C 2 ADM1817-5ARTZ-RL7 −40°C to +105°C ADM1810 to ADM1813/ADM1815 to ADM1818 Trip Point Package Option 2.31 V RT-3 (SOT-23) 2.31 V RT-3 (SOT-23) 2.31 V RT-3 (SOT-23) 2.31 V RT-3 (SOT-23) 3.06 V KS-3 (SC70) 3.06 V KS-3 (SC70) 3 ...

Page 12

... ADM1810 to ADM1813/ADM1815 to ADM1818 1 Model Temperature Range ADM1817-10AKS-REEL −40°C to +105°C ADM1817-10AKS-RL7 −40°C to +105°C 2 ADM1817-10AKSZ-RL −40°C to +105°C 2 ADM1817-10AKSZ-RL7 −40°C to +105°C ADM1817-10ART-REEL −40°C to +105°C ADM1817-10ART-RL7 −40°C to +105°C 2 ADM1817-10ARTZ-RL −40°C to +105°C ...

Page 13

... ADM1818-R23AKSZ-RL −40°C to +105°C 2 ADM1818-R23AKSZ-R7 −40°C to +105°C ADM1818-R23ART-RL −40°C to +105°C ADM1818-R23ART-RL7 −40°C to +105°C 1 Available only in reels RoHS Compliant Part. ADM1810 to ADM1813/ADM1815 to ADM1818 Trip Point Package Option 2.55 V RT-3 (SOT-23) 2.55 V RT-3 (SOT-23) 2.55 V RT-3 (SOT-23) 2.18 V KS-3 (SC70) 2.18 V KS-3 (SC70) 2.18 V KS-3 (SC70) 2 ...

Page 14

... ADM1810 to ADM1813/ADM1815 to ADM1818 NOTES Rev Page ...

Page 15

... NOTES ADM1810 to ADM1813/ADM1815 to ADM1818 Rev Page ...

Page 16

... ADM1810 to ADM1813/ADM1815 to ADM1818 NOTES ©1999–2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00064-0-8/08(E) Rev Page ...

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