Document
NCV8518A
Low Dropout Linear Regulator with Watchdog, Wake Up, RESET, and ENABLE
The NCV8518A device is a precision micropower voltage regulator. It has a fixed output voltage of 5.0 V and regulates within ±2%. It is suitable for use in all automotive environments and contains all the required functions to control a microprocessor. This device has low dropout voltage and low quiescent current. It includes a watchdog timer, adjustable reset, wake up and enable function. Also encompassed in this device are safety features such as thermal shutdown and short circuit protection. It is capable of handling up to 45 V transients.
Features
• Output Voltage of 5.0 V • ±2% Output Voltage Tolerance • Output Current up to 250 mA • Micropower Compatible Control Functions:
− ENABLE − Watchdog − RESET − Wake Up • NCV Prefix for Automotive and Other Applications Requiring Site
and Change Control
• Low Dropout Voltage • Low Quiescent Current of 100 mA • Protection Features:
− Thermal Shutdown − Short Circuit • Low Sleep Mode Current less than 1.0 mA • AEC Qualified • PPAP Capable • These are Pb−Free Devices
Applications
• Tire Pressure Monitor • Battery Powered Consumer Electronics
http://onsemi.com
MARKING DIAGRAMS
8
SOIC−8
8518A
8
EXPOSED PAD
AYWW
CASE 751AC
G
1
1
16
16 1
SOIC−16 LEAD WIDE BODY
EXPOSED PAD CASE 751AG
NCV8518A AWLYYWWG
1
A WL YY, Y WW G, or G
= Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package
ORDERING INFORMATION
Device NCV8518APDG
Package SOIC−8*
Shipping† 98 Units / Rail
NCV8518APDR2G SOIC−8* 2500 / Tape & Reel NCV8518APWG SOIC−16* 47 Units / Rail
NCV8518APWR2G SOIC−16* 1000 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
*These packages are inherently Pb−Free.
© Semiconductor Components Industries, LLC, 2011
1
May, 2011 − Rev. 5
Publication Order Number: NCV8518A/D
NCV8518A
PIN CONNECTIONS
SOIC−8 EP
1 Wake Up
8 RESET
GND
WDI
Delay VOUT
ENABLE VIN
SOIC−16 EP
1 NC
16 Wake Up
NC
RESET
GND
NC
NC
WDI
Delay
NC
NC
ENABLE
NC
NC
VOUT
VIN
PIN FUNCTION DESCRIPTION
Pin
SOIC−8 EP SOIC−16 EP
Symbol
4
8
VOUT
5
9
VIN
7
13
WDI
2
3
GND
6
11
ENABLE
8 3 − 1 EPAD
15
5
1, 2, 4, 6, 7, 10, 12, 14
16 EPAD
RESET Delay
NC Wake Up
EPAD
Description
Regulated output voltage.
Input supply voltage.
CMOS compatible Watchdog input. The watchdog function monitors the falling edge of the incoming signal.
Ground connection.
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.
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.
Buffered reference voltage used to create timing curren.