AD5100 System-Management IC with Programmable Quad Voltage Monitoring and Supervisory Functions

The AD5100 is a programmable system-management IC that combines four channels of voltage monitoring and a watchdog supervision that can be used to shut down external supplies, reset processors, or disable any other system electronics when the system malfunctions. The AD5100 can also be used to protect systems from the faulty condition of 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 7.96V. input. Most monitoring input thresholds and timing settings can be programmed on the fly or permanently set in the factory with the OTP feature. Automotive systems Network equipment Computers, controllers, and embedded systems

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 QSOP-16 package and can operate in an extended automotive temperature range from −40°C to +125°C.

Data Sheet, Rev. 0, 10/08

Features and Benefits

2 device-enabling outputs with 6 programmable monitoring
Inputs (See Table 1 on data sheet)

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 V_2MON and V_4MON

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
OTP for permanent threshold and timing settings
OTP can be overwritten for dynamic adjustments
Power-up by edge triggered signal
Power-down over I²C bus

Additional Features found on the data sheet