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PDF NCV4949A Data sheet ( Hoja de datos )

Número de pieza NCV4949A
Descripción 100mA 5.0V Low Dropout Voltage Regulator
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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

1 page




NCV4949A pdf
NCV4949A
TYPICAL CHARACTERIZATION CURVES (continued)
3.0
2.5
VCC = 14 V
TJ = 25°C
2.0
1.5
1.0
0.5
0
0.1 1.0
10
Iout, OUTPUT CURRENT (mA)
Figure 8. Quiescent Current versus
Output Current
100
3.0
2.5 TJ = 25°C
2.0
1.5
RL = 100 W
1.0
0.5 RL = 5.0 kW
0
0
5.0 10
15
20 25 30
VCC, SUPPLY VOLTAGE (V)
Figure 9. Quiescent Current versus
Supply Voltage
6.0
TJ = 25°C
5.0
Resistor 10 kW
4.0 from Reset Output
to 5.0 V
3.0
2.0
1.0
0
4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0
Vout, OUTPUT VOLTAGE (V)
Figure 10. Reset Output versus
Regulator Output Voltage
4.7
4.66
Upper Threshold
4.62
4.58
4.54
4.5
4.46 Lower Threshold
4.42
-40
-20 0 20 40 60 80 100 120
TJ, JUNCTION TEMPERATURE (°C)
Figure 11. Reset Thresholds versus
Junction Temperature
140
6.0
5.0 TJ = 25°C
4.0 Resistor 10 k
from Sense Output
3.0 to 5.0 V
2.0
1.0
0
1.0 1.05 1.1 1.15 1.2 1.25 1.3 1.35 1.4 1.45 1.5
VSI, SENSE INPUT VOLTAGE (V)
Figure 12. Sense Output versus
Sense Input Voltage
1.4
1.38
1.36
1.34
1.32
1.3
1.28
1.26
1.24
1.22
1.2
-40
Upper Threshold
Lower Threshold
-20 0 20 40 60 80 100
TJ, JUNCTION TEMPERATURE (°C)
Figure 13. Sense Thresholds versus
Junction Temperature
120
http://onsemi.com
5

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NCV4949A arduino
NCV4949A
PACKAGE DIMENSIONS
SOIC20 WB
CASE 751D05
ISSUE G
D
20
A
11
E
1 10
20X B
B
0.25 M T A S B S
18X e
A
SEATING
A1
PLANE
T
q
C
NOTES:
1. DIMENSIONS ARE IN MILLIMETERS.
2. INTERPRET DIMENSIONS AND TOLERANCES
PER ASME Y14.5M, 1994.
3. DIMENSIONS D AND E DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.
5. DIMENSION B DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE PROTRUSION
SHALL BE 0.13 TOTAL IN EXCESS OF B
DIMENSION AT MAXIMUM MATERIAL
CONDITION.
MILLIMETERS
DIM MIN MAX
A 2.35 2.65
A1 0.10 0.25
B 0.35 0.49
C 0.23 0.32
D 12.65 12.95
E 7.40 7.60
e 1.27 BSC
H 10.05 10.55
h 0.25 0.75
L 0.50 0.90
q 0_ 7_
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 3036752175 or 8003443860 Toll Free USA/Canada
Fax: 3036752176 or 8003443867 Toll Free USA/Canada
N. American Technical Support: 8002829855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81357733850
http://onsemi.com
11
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
NCV4949A/D

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