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AD5100 Datasheet(PDF) 1 Page - Analog Devices

Part No. AD5100
Description  System Management IC with Programmable Quad Voltage Monitoring and Supervisory Functions
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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System Management IC with Programmable Quad
Voltage Monitoring and Supervisory Functions
AD5100
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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
www.analog.com
Fax: 781.461.3113
©2008 Analog Devices, Inc. All rights reserved.
FEATURES
2 device-enabling outputs with 6 programmable monitoring
inputs (see Table 1)
Two 30 V monitoring inputs with shutdown control of
external devices
Programmable overvoltage, undervoltage, turn-on and
turn-off thresholds, and shutdown timings
Shutdown warning with fault detection
Reset control of external devices
5 V and 7.96 V monitoring inputs with reset control of
external devices
Programmable reset thresholds and hold time
eMOST-compatible inputs
Diagnostic application using V2MON and V4MON
Two supervisory functions
Watchdog reset controller with programmable timeout
and selectable floating input
Manual reset control for external devices
Digital interface and programmability
I2C-compatible interface
OTP1 for permanent threshold and timing settings
OTP can be overwritten for dynamic adjustments
Power-up by edge triggered signal
Power-down over I2C bus
Operating range
Supply voltage: 6.0 V to 30 V
Temperature range: −40°C to +125°C
Shutdown current: 5 μA max
Operating current: 2 mA max
High voltage input antimigration shielding pinouts
APPLICATIONS
Automotive systems
Network equipment
Computers, controllers, and embedded systems
1 One-time programmable EPROM with unlimited adjustment before OTP
execution.
GENERAL DESCRIPTION
The AD5100 is a programmable system management IC that
combines four channels of voltage monitoring and watchdog
supervision. The AD5100 can be used to shut down external
supplies, reset processors, or disable any other system electron-
ics when the system malfunctions. The AD5100 can also be
used to protect systems from improper device power-up
sequencing. The AD5100, a robust watchdog reset controller,
can monitor two 30 V inputs with shutdown and reset controls,
one 2.3 V to 5.0 V input, and one 1.6 V to 7.96 V input. Most
monitoring input thresholds and timing settings can be
programmed on-the-fly or permanently set with the OTP
memory feature.
The AD5100 is versatile for system monitoring applications
where critical microprocessor, DSP, and embedded systems
operate under harsh conditions, such as automotive, industrial,
or communications network environments.
The AD5100 is available in a compact 16-lead QSOP package
and can operate in an extended automotive temperature range
from −40°C to +125°C.
Table 1. AD5100 General Input and Output Information
Input
Monitoring
Range1
Shutdown
Control
Reset
Control
Fault
Detection
V1MON
6 V to 28.29 V
Yes
Yes
Yes
V2MON
3 V to 24.75 V
Yes
Yes
Yes
V3MON
2.32 V to 4.97 V
No
Yes
Yes
V4MON
1.67 V to 7.96 V
No
Yes
Yes
WDI
0 V to 5 V
Yes
Yes
No
MR
0 V to 5 V
No
Yes
No
1 With programmable threshold and programmable delay.




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