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  ON Semiconductor Electronic Components Datasheet  

NCV8668 Datasheet

LDO Regulator

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NCV8668
LDO Regulator - Very Low
Iq, Window Watchdog,
Enable and Reset
150 mA
The NCV8668 is 150 mA LDO regulator with integrated window
watchdog and reset functions dedicated for microprocessor
applications. Its robustness allows NCV8668 to be used in severe
automotive environments. Very low quiescent current as low as 38 mA
typical makes it suitable for applications permanently connected to
battery requiring very low quiescent current with or without load. The
Enable function can be used for further decrease of quiescent current
down to 1 mA.
The NCV8668 contains protection functions as current limit and
thermal shutdown.
Features
Output Voltage Options: 3.3 V and 5 V
Output Voltage Accuracy: $1.5% (TJ = 25°C to 125°C)
Output Current up to 150 mA
Very Low Quiescent Current: Typ 38 mA (max 43 mA)
Very Low Dropout Voltage
Enable Function
Microprocessor Compatible Control Functions:
Reset with Adjustable Poweron Delay
Window Watchdog
Wide Input Voltage Operation Range: up to 40 V
Protection Features:
Current Limitation
Reverse Output Current
Thermal Shutdown
These are PbFree Devices
Typical Applications
Body Control Module
Instruments and Clusters
Occupant Protection and Comfort
Powertrain
VBAT
V in
V out
Cin
0.1 mF
NCV8668
Vout
Cout
2.2 mF
OFF ON
RO
WDI
EN
WM1
WM2
GND
VDD
Microprocessor
RESET
I/O
I/O
I/O
Figure 1. Application Schematic
http://onsemi.com
14
1
SOIC14
CASE 751A
MARKING
DIAGRAMS
14
V8668ZZXXG
AWLYWW
1
8
1
SOIC8
D SUFFIX
CASE 751A
8
668ZZX
ALYW
G
1
8
1
SOIC8 EP
CASE 751AC
8
668ZZX
AYWWG
G
1
ZZ
= Timing, Reset Threshold,
Watchdog Control Options*
XX,X = Voltage Options
= 5 V (XX = 50, X = 5)
= 3.3 V (XX = 33, X = 3)
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
G or G = PbFree Package
*See APPLICATION INFORMATION Section.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 15 of this data sheet.
© Semiconductor Components Industries, LLC, 2010
1
September, 2019 Rev. 2
Publication Order Number:
NCV8668/D


  ON Semiconductor Electronic Components Datasheet  

NCV8668 Datasheet

LDO Regulator

No Preview Available !

Vin
EN
GND
Driver with
Current
Limit
Thermal
Shutdown
Enable
NCV8668
Vref
Vout
*
RESET
GENERATOR
and
WINDOW
WATCHDOG
RO
WDI
WM1
WM2
* 5 V OPTION ONLY
Figure 2. Simplified Block Diagram
1
RO
GND
GND
GND
GND
WM 2
WM 1
14
EN
Vin
GND
GND
GND
Vout
WDI
SOIC14
1
RO
GND
WM 2
WM 1
SOIC8
8
EN
Vin
Vout
WDI
1
RO
GND
WM 2
WM 1
8
EN
Vin
Vout
WDI
SOIC8 EP
Figure 3. Pin Connections
(Top View)
PIN FUNCTION DESCRIPTION
Pin No.
SOIC14
Pin No.
SOIC8
Pin No.
SOIC8 EP
1
1
1
2, 3, 4, 5, 10,
2
2
11, 12
6
3
3
7
4
4
8
5
5
9
6
6
13
7
7
14
8
8
EPAD
Pin
Name
RO
GND
WM2
WM1
WDI
Vout
Vin
EN
GND
Description
Reset Output. 30 kW internal PullUp resistor connected to Vout. (Open Drain
output for 2.5 V, 2.6 V, and 3.3 V voltage options) RO goes Low when Vout
drops by more than 7% from nominal.
Power Supply Ground.
For SOIC14
connect pin 2 and 3 to GND
connect pin 45 and 1012 to heatsink area with GND potential
Watchdog Mode Bit 2; Watchdog and Reset mode selection. Connect to Vout
or GND.
Watchdog Mode Bit 1; Watchdog and Reset mode selection. Connect to Vout
or GND.
Watchdog Input; Trigger Input for Watchdog pulses. When not used, connect
to Vout or GND.
Regulated Output Voltage. Connect 2.2 mF capacitor with ESR < 100 W to
ground.
Positive Power Supply Input. Connect 0.1 mF capacitor to ground.
Enable Input; low level disables the IC.
Exposed Pad is Connected to Ground
http://onsemi.com
2


Part Number NCV8668
Description LDO Regulator
Maker ON Semiconductor
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NCV8668 Datasheet PDF






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