NCV8518B datasheet(2/13 Pages) ONSEMI

Part #	NCV8518B

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

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Manufacturer	ONSEMI [ON Semiconductor]

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NCV8518B

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2

PIN CONNECTIONS

VIN

VOUT

18

WDI

Delay

ENABLE

GND

RESET

Wake Up

SOIC−8 EP

VIN

VOUT

1

16

NC

ENABLE

NC

Delay

WDI

NC

GND

RESET

NC

Wake Up

NC

SOIC−16 EP

PIN FUNCTION DESCRIPTION

SOIC−8 EP

SOIC−16 EP

Symbol

Description

4

8

VOUT

Regulated output voltage.

5

9

VIN

Input supply voltage.

7

13

WDI

CMOS compatible Watchdog input. The watchdog function monitors the falling edge of

the incoming signal.

2

3

GND

Ground connection.

6

11

ENABLE

ENABLE control for the IC. Positive logic. If ENABLE control will not be used, connect

this pin to VIN via a 20k current limiting resistor. Internal ESD protection structures will

clamp the maximum ENABLE voltage to approximately 21 V.

8

15

RESET

CMOS compatible output RESET goes low whenever VOUT drops by more than 7.0%

from nominal, or during the absence of a correct watchdog signal.

3

5

Delay

Buffered reference voltage used to create timing current for RESET and Watchdog

threshold frequency from RDelay.

−

1, 2, 4, 6, 7,

10, 12, 14

NC

No Connection.

1

16

Wake Up

Continuously generated signal that interrupts the microprocessor from sleep mode.

EPAD

Connect to Ground potential or leave unconnected.

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