UCD90240 Overview
Description
The UCD90240 is a 24-rail PMBus addressable power sequencer and system manager in a compact 9-mm × 9-mm BGA package. 1 The device provides 24 analog monitor (MON) pins to monitor power-supply voltage, current, or temperature with two 12-bit ADC engines, 24 dedicated enable (EN) pins to control power rail on/off, 24 dedicated margin pins for closed-loop margining, 12 Logic GPO (LGPO) pins to support flexible Boolean logic and state machine functions, and 24 GPIO pins which can be configured as GPI, GPO, System Reset, cascading fault pins, and Watchdog I/O, and so forth.
Key Features
- 1 Sequence, Monitor and Margin 24 Voltage Rails with a 9-mm × 9-mm Small Footprint
- Monitor and Respond to User-Defined Faults Including OV, UV, OC, UC, Temperature, Timeout, and GPI-Triggered Faults
- Flexible Sequence-on/off Dependencies, Delay Time, Boolean Logic, and GPIO Configuration to Support Complex Sequencing Applications
- High-accuracy Closed-loop Margining
- Active Trim Function Improves Rail Output Voltage Accuracy
- Easily Cascade Up to 4 Power Sequencers and Take Coordinated Fault Responses
- Programmable Watchdog Timer and System Reset
- Pin-Selected Rail State
- PMBus 1.2 Compliant
