NCV8518APWG datasheet(7/13 Pages) ONSEMI

Part #	NCV8518APWG

Description	Low Dropout Linear Regulator with Watchdog, Wake Up, RESET, and ENABLE

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Manufacturer	ONSEMI [ON Semiconductor]

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NCV8518A

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TIMING DIAGRAMS

VIN, ENABLE

RESET

Wake Up

WDI

VOUT

POR

RESET Delay Time

RESET High

to Wake Up

Delay Time

Wake Up Period

POR

RESET

Wake Up

WDI

VIN, ENABLE

RESET Threshold

POR

VOUT Decreasing

Power Down

Wake Up

Period

Figure 2. Power Up, Sleep Mode and Normal Operation

VIN, ENABLE

RESET

Wake Up

WDI

VOUT

Wake Up

Duty Cycle = 50%

Power Up

Microprocessor

Sleep Mode

Normal Operation with Varying Watchdog Signal

RESET High

to Wake Up

Delay Time

POR

Wake Up Duty Cycle will be 50% when the WDI

pulse occurs at the low state of the Wake Up Signal.

Figure 3. Error Condition: Watchdog Remains Low and a RESET is Issued

VOUT

Min WDI falling

edge delay after

Wake Up rising

edge

Wake Up

Response to Reset

Wake Up

Response to

WDI

Figure 4. Power Down, Restart Sequence, and Wake Up Response to WDI

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NCV8518APWG Datasheet(PDF) 7 Page - ON Semiconductor

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