System Management IC with Programmable Quad
Voltage Monitoring and Supervisory Functions
AD5100
FEATURES
GENERAL DESCRIPTION
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
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
Monitoring
Shutdown
Control
Reset
Control
Fault
Detection
Input Range1
V1MON 6 V to 28.29 V
V2MON 3 V to 24.75 V
V3MON 2.32 V to 4.97 V No
V4MON 1.67 V to 7.96 V No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
WDI
MR
0 V to 5 V
0 V to 5 V
Yes
No
High voltage input antimigration shielding pinouts
APPLICATIONS
1 With programmable threshold and programmable delay.
Automotive systems
Network equipment
Computers, controllers, and embedded systems
1 One-time programmable EPROM with unlimited adjustment before OTP
execution.
Rev. 0
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 registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2008 Analog Devices, Inc. All rights reserved.
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