3511
DESCRIPTION
The UTC 3511 is designed to provide the voltage, and current supervisor function, power good output (PGO), fault protection latch (FPL_N), and protection detector function (PDON_N) control for switching power systems.
For supervisor function, it provides the over voltage detector (OVD) monitoring for 3.3V, 5V, 12V; the under voltage detector (UVD) monitoring for 3.3V, 5V. When 3.3V or 5V voltage is decreasing to 2.69V, 4.3V respectively, the under voltage detector (UVD) function will be enabled to reset the PGO signal from high to low,and the FPL_N is latched HIGH. When 3.3V, 5V or 12V voltage is increasing to 3.9V, 6.1V or 13.4V respectively, the over voltage detector (OVD) function will be enabled to reset the PGO signal from high to low, and the FPL_N is latched HIGH.
To achieve better immunity for lighting surge glitch and to prevent accidental power shut down during dynamic loading condition, the de-bounce time for UVD and OVD is 73us. The power supply is turned on...
