Digi-Key – PMBus/I²C addressable power-supply sequencer and system health monitor (UCD9090RGZT)

The Texas Instruments UCD9090 10-rail PMBus/I²C addressable power-supply sequencer and monitor is now available from Digi-Key.

The device integrates a 12-bit ADC for monitoring up to ten power-supply voltage inputs. Twenty-three GPIO pins can be used for power supply enables, power-on reset signals, external interrupts, cascading, or other system functions. Ten of these pins offer PWM functionality. Using these pins, the UCD9090 offers support for margining and general-purpose PWM functions. Specific power states can be achieved using the Pin-Selected Rail States feature. This feature allows with the use of up to three GPIs to enable and disable any rail. This is useful for implementing system low-power modes and the Advanced Configuration and Power Interface (ACPI) specification that is used for hardware devices.

Suitable applications include industrial / ATE, telecommunications equipment, networking equipment, servers and storage systems, systems requiring sequencing, and monitoring of multiple power rails.