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ON Semiconductor - 100mA 5.0V Low Dropout Voltage Regulator

Numéro de référence NCV4949A
Description 100mA 5.0V Low Dropout Voltage Regulator
Fabricant ON Semiconductor 
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NCV4949A fiche technique
NCV4949A
100 mA, 5.0 V, Low Dropout
Voltage Regulator with
Reset and Sense
The NCV4949A is a monolithic integrated 5.0 V voltage regulator
with a very low dropout and additional functions such as reset and an
uncommitted voltage sense comparator.
It is designed for supplying microcontroller/microprocessor
controlled systems particularly in automotive applications. The
NCV4949A has improved reset behavior for lower input and output
voltage levels.
Features
Operating DC Supply Voltage Range 5.0 V to 28 V
Transient Supply Voltage Up to 40 V
High Precision Output Voltage 5.0 V ±1%
Output Current Capability Up to 100 mA
Very Low Dropout Voltage Less Than 0.4 V
Reset Circuit Sensing The Output Voltage
Programmable Reset Pulse Delay
Voltage Sense Comparator
Thermal Shutdown and Short Circuit Protections
NCV Prefix for Automotive and Other Applications Requiring Site
and Change Control
These are PbFree Devices
Supply
Voltage (VCC)
1
Output
Voltage (Vout)
VZ 3
8
CT 4
Preregulator
6.0 V
2.0 mA
Sense
Input
(Si)
2
Regulator
Vs
1.23 Vref
Reset
+
- 2.0 V
+
-
Sense
1.23 V
Reset
6
Sense
Output
(So)
7
5 GND
Figure 1. Representative Block Diagram
http://onsemi.com
8
1
8
1
SOIC8
D SUFFIX
CASE 751
MARKING
DIAGRAMS
8
V4949A
ALYWD
G
1
8
SOIC8 EP
PD SUFFIX
CASE 751AC
V4949A
ALYWG
G
1
20
SOIC20 W
DW SUFFIX
CASE 751AC
NCV4949A
AWLYYWWG
1
A
WL, L
YY, Y
= Assembly Location
= Wafer Lot
= Year
WW, W = Work Week
G or G = PbFree Device
(Note: Microdot may be in either location)
PIN CONNECTIONS
VCC 1
Si 2
VZ 3
CT 4
(Top View)
8 Vout
7 So
6 Reset
5 GND
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
© Semiconductor Components Industries, LLC, 2010
November, 2010 Rev. 1
1
Publication Order Number:
NCV4949A/D

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