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AD5100 Datasheet

System-Management IC

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Preliminary Technical Data
System-Management IC with Programmable Quad
Voltage Monitoring and Supervisory Functions
AD5100
FEATURES
Two Device-Enabling Outputs with Six Programmable
Monitoring Inputs (Table 1)
o Two 30V Monitoring Inputs with Shutdown Control of
External Devices:
ƒProgrammable Over-voltage, Under-voltage,
Turn-on, Turn-off Thresholds, and Shutdown
timings
ƒShutdown Warning with Fault Detection
o Two 5V Monitoring Inputs with Reset Control of External
Devices:
ƒ Programmable Reset Thresholds and Hold Time
o Two Supervisory Functions:
ƒ Watchdog Reset Controller with Programmable
Timeout and Selectable Floating Input
ƒ Manual Reset Control for External Devices
Digital Interface and Programmability:
o I2C® Compatible Interface
o OTP1 for Permanent Threshold and Timing Settings
o OTP Overwritten Capable for Dynamic Adjustments
o Power Up by Edge Triggered Signal
o Power Down by I2C Software
Operating Range:
o Supply Voltage 6.0V to 30V
o Temp Range -40oC to +125oC
o Low Shutdown Current: 10μA
High-Voltage-Input Anti-migration Shielding Pinouts
APPLICATIONS
Automotive Systems
Network Equipment
Computers, Controllers, and Embedded Systems
GENERAL DESCRIPTION
The AD5100 is a programmable system-management IC that
combines 4-channel of voltage monitoring and a watchdog
supervision that can be used to shutdown external supplies,
reset processors, or disable any other system electronics when
the systems malfunction. The AD5100 can also be used to
protect system under faulty condition of improper devices
power up sequencing. The AD5100 can monitor two 30V inputs
with shutdown and reset controls, one 2.5V-5.0V and one 0.9V-
3.3V monitoring inputs with reset control, a robust watchdog
reset controller. Most monitoring input thresholds and timing
settings can be programmed on the fly or permanently set in
the factory with the OTP feature.
The AD5100 is versatile for system-monitoring applications
where critical μP, DSP, and embedded systems operate under
harsh conditions such as automotive, industrial, or
communications network environments.
The AD5100 is available in compact QSOP-16 and can operate
in an extended automotive temperature range from -40oC to
+125oC.
1.One Time Programmable EPROM – Unlimited Adjustment Before OTP Execution.
2 With Programmable Threshold and Programmable Delay.
Table 1. AD5100 General Inputs and Output Information
Input
Monitoring
Range2
Shutdown
Control
Reset
Cont
rol
V1MON
V2MON
V3MON
V4MON
WDI
MR
6 – 30 V
3 – 30 V
2.5 – 5.0 V
0.9 – 3.3 V
0–5V
0–5V
Fault
Dete
ctio
n
Rev. PrJ
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.
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
©2006 Analog Devices, Inc. All rights reserved.
Analog Devices
Analog Devices



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