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WT76018T
The WT76018T provides protection circuits, power good output (PGO), fault protection latch (FPOB), and a protection detector function (PSONB) control. It can minimize external components of switching power supply systems in personal computer. The Over Voltage Detector (OVD) monitors VX, V33, V5, V12A,V12B, V12C, V12D, V12E and V12Finput voltage level. The Under Voltage Detector (UVD) monitors V33, V5, V12A, V12B, V12C, V12D, V12E, V12Finput voltage level. The Over Current Detector (OCD) monitor I33&V33, I5&V5, I12A&V12A,I12B&V12B, I12C&V12C, I12D&V12D, I12E&V12E and I12F&V12Finput current sense. The pin VX provides an extra protection function. When OVD or UVD or OCD or VX detect the fault voltage level, the FPOB is latched HIGH and PGO go low. The latch can be reset by PSONB go HIGH. There is 4 ms delay time for PSONB turn off FPOB. When OVD and UVD and OCD detect the right voltage level, the power good output (PGO) will be issue.
Features
- The Over Voltage Detector (OVD) monitors VX, V33, V5 and six channel 12V input voltage.
- The Under Voltage Detector (UVD) monitors V33, V5 and six channel 12V input voltage.
- The Over Current Detector (OCD) monitors I33&33, I5&V5 and six channel I12&V12 input pins.
- Six Channels for I12V&V12 OCD with auto calibration
- The VX > 1.2V provide an extra protection.
- Both of the power good output (PGO) and fault protection latch (FPOB) are Open Drain Output.
- 180ms or 250ms time delay for PGO.
- 38 ms for PSONB input signal De–bounce.
- 14 us for OVD internal signal De–bounce.
- 55 us for UVD / VX internal signal De–bounce.
- 35 ms or 140 ms for OCD internal signal De–bounce.
- 73 us for PGI internal signal De–bounce.
- 4 ms for PSONB turn-off FPOB
- Short-circuit turn-on protection
- Package Type: PDIP-24 and SOP-24
- The Over Voltage Detector (OVD) monitors VX, V33, V5 and six channel 12V input voltage.
应用领域
