ADM809-5LART-REEL Analog Devices Inc, ADM809-5LART-REEL Datasheet

IC SUPERVISOR MPU 4.63V SOT23

ADM809-5LART-REEL

Manufacturer Part Number
ADM809-5LART-REEL
Description
IC SUPERVISOR MPU 4.63V SOT23
Manufacturer
Analog Devices Inc
Type
Simple Reset/Power-On Resetr
Datasheet

Specifications of ADM809-5LART-REEL

Rohs Status
RoHS non-compliant
Number Of Voltages Monitored
1
Output
Push-Pull, Totem Pole
Reset
Active Low
Reset Timeout
140 ms Minimum
Voltage - Threshold
4.63V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-23-3, TO-236-3, Micro3™, SSD3, SST3
FEATURES
Specified over temperature
Low power consumption: 17 μA
Precision voltage monitor: 3 V, 5 V options
Reset assertion down to 1 V V
30 ms minimum power-on reset
Logic low RESET output
Available in SOT-23 and SC70 packages
APPLICATIONS
Microprocessor systems
Computers
Controllers
Intelligent instruments
Automotive systems
GENERAL DESCRIPTION
The supervisory circuit of the ADM809-5L/ADM809-5S monitors
the power supply voltage in microprocessor systems. It provides
a reset output during power-up, power-down, and brownout
conditions. On power-up, an internal timer holds reset asserted
for 55 ms. This holds the microprocessor in a reset state until
conditions have stabilized. The RESET output remains operational
with V
an active low reset signal ( RESET ).
The reset comparator features built-in glitch immunity, making
it immune to fast transients on V
The ADM809-5L/ADM809-5S consume only 17 μA, making
them suitable for low power, portable equipment.
Rev. B
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.
CC
as low as 1 V. The ADM809-5L/ADM809-5S provide
CC
CC
.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
V
CC
V
CC
ADM809-5L/
ADM809-5S
ADM809-5L/
ADM809-5S
V
FUNCTIONAL BLOCK DIAGRAM
ADM809-5L/ADM809-5S
REF
TYPICAL OPERATING CIRCUIT
GND
V
CC
RESET
Supervisory Circuit
©2008 Analog Devices, Inc. All rights reserved.
Figure 1.
Figure 2.
GND
GENERATOR
Microprocessor
RESET
55ms
MICROPROCESSOR
RESET INPUT
SYSTEM
GND
www.analog.com
V
CC
RESET

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ADM809-5LART-REEL Summary of contents

Page 1

... On power-up, an internal timer holds reset asserted for 55 ms. This holds the microprocessor in a reset state until conditions have stabilized. The RESET output remains operational with V as low The ADM809-5L/ADM809-5S provide CC an active low reset signal ( RESET ). The reset comparator features built-in glitch immunity, making it immune to fast transients on V ...

Page 2

... ADM809-5L/ADM809-5S TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Typical Operating Circuit ................................................................ 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 4 ESD Caution .................................................................................. 4 REVISION HISTORY 10/08—Rev Rev. B Updated Format .................................................................. Universal Updated Outline Dimensions ......................................................... 8 Changes to Ordering Guide ............................................................ 8 3/03—Rev Rev. A Added SC70 Package .......................................................... Universal Changes to Features ...

Page 3

... A 3.3 5 −40°C to +150°C with 22 kΩ external pull-up on output A (Figure 13 μA V < 5.5 V, ADM809-5L μA V < 3.6 V, ADM809-5S 4. −40°C to +85° 85°C to 150° −40°C to +85° 85° ...

Page 4

... ADM809-5L/ADM809-5S ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 2. Parameter V CC RESET Input Current V CC Output Current RESET Rate of Rise θ Thermal Impedance JA SOT-23 SC70 Lead Temperature (Soldering, 10 sec) Vapor Phase (60 sec) Infrared (15 sec) Storage Temperature Range Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device ...

Page 5

... Figure 3. Pin Configuration rises above the reset threshold REF REF REF NOTES RESET TIME = 55ms TYPICAL RESET VOLTAGE THRESHOLD. REF Figure 4. Power Fail RESET Timing RESET Threshold (V) 4.63 2.93 Rev Page ADM809-5L/ADM809- below the reset threshold, and remains low for CC V REF ...

Page 6

... Rev Page 180 V 160 V = 10mV OD 140 120 V = 20mV 100 100mV 200mV OD 0 –40 – TEMPERATURE (°C) Figure 8. ADM809-5S Power-Down Reset Delay vs. Temperature 1.0020 1.0015 1.0010 1.0005 1.0000 0.9995 0.9990 –40 – TEMPERATURE (°C) Figure 9. Normalized Reset Voltage Threshold vs. Temperature = V – ...

Page 7

... RESET tolerance levels due to the deterioration of the RESET circuit power supply of the microprocessor. The possibility of a malfunction during a power failure is greatly reduced because the ADM809-5L/ ADM809-5S can operate effectively even when there are large degradations of the supply voltages. Another advantage of the ADM809-5L/ADM809-5S series is its very accurate internal voltage reference circuit ...

Page 8

... SEATING 0.37 PLANE COMPLIANT TO JEDEC STANDARDS TO-236-AB Figure 14. 3-Lead Small Outline Transistor Package [SOT-23] (RT-3) Dimensions shown in millimeters ORDERING GUIDE Reset Model Threshold (V) ADM809-5LART-REEL 4.63 ADM809-5LART-REEL7 4.63 1 ADM809-5LARTZ-REEL 4.63 1 ADM809-5LARTZ-RL7 4.63 ADM809-5LAKS-REEL 4.63 ADM809-5LAKS-REEL7 4.63 1 ADM809-5LAKSZ-REEL 4.63 1 ADM809-5LAKSZ-RL7 4 ...

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