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NCP5203MNR2G Datasheet(PDF) 9 Page - ON Semiconductor |
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NCP5203MNR2G Datasheet(HTML) 9 Page - ON Semiconductor |
9 / 10 page NCP5203 http://onsemi.com 9 5VDUAL VDDQEN VTTEN VDDQ VTT PGOOD OPERATING MODE Soft Start 10ms thold ∼ 200 ms VTT in H−Z thold ∼ 200 ms S0 S3 S0 S5 5VDUAL comes out of UVLO VDDQEN goes HIGH, VDDQ is activated. VTTEN goes HIGH, VTT is not activated until VDDQ is Good. INREGDDQ goes HIGH, VTT goes into normal mode. PGOOD goes HIGH. VTTEN goes LOW to activate S3 mode and to turn off VTT, then INREGVTT goes LOW, PGOOD goes LOW. PGOOD goes HIGH. Both VDDQEN and VTTEN go LOW to trigger S5 mode; VDDQ and VTT is disabled, then INREGDDQ and INREGVTT go LOW, PGOOD goes LOW. VTTEN goes HIGH, VTT goes into normal mode. Figure 3. Powerup and Powerdown Timing Diagram S5 VTTEN IS DON’T CARE IN S5 INREGVTT goes HIGH. INREGVTT goes HIGH. |
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