Voltage Regulator. NCV4949A Datasheet

NCV4949A Regulator. Datasheet pdf. Equivalent

NCV4949A Datasheet
Recommendation NCV4949A Datasheet
Part NCV4949A
Description 100mA 5.0V Low Dropout Voltage Regulator
Feature NCV4949A; NCV4949A 100 mA, 5.0 V, Low Dropout Voltage Regulator with Reset and Sense The NCV4949A is a monolit.
Manufacture ON Semiconductor
Datasheet
Download NCV4949A Datasheet




ON Semiconductor NCV4949A
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
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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



ON Semiconductor NCV4949A
NCV4949A
ABSOLUTE MAXIMUM RATINGS
Rating
Symbol
Value
Unit
DC Operating Supply Voltage
Transient Supply Voltage (t < 1.0 s)
Output Current
Output Voltage
Sense Input Current
Sense Input Voltage
Output Voltages
VCC
VCC TR
Iout
Vout
ISI
VSI
28
40
Internally Limited
20
±1.0
VCC
V
V
V
mA
V
Reset Output
Sense Output
Output Currents
VReset
20
VSO
20
mA
Reset Output
Sense Output
Preregulator Output Voltage
Preregulator Output Current
ESD Protection at any pin
IReset
ISO
VZ
IZ
5.0
5.0
7.0 V
5.0 mA
V
Human Body Model
4000
Machine Model
200
Charged Device Model (SOIC20 W)
1000
Thermal Resistance, JunctiontoAir
SOIC8
SOIC8 EP
SOIC20 W
RqJA
189.3
84.8
95.8
°C/W
Operating Junction Temperature Range
TJ
40 to +150
°C
Storage Temperature Range
Tstg
65 to +150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
LEAD TEMPERATURE SOLDERING REFLOW (Note 1)
Rating
Reflow (SMD styles only) lead free 60 150 sec above 217, 40 sec max at peak
Moisture Sensitivity Level (SOIC8)
Moisture Sensitivity Level (SOIC8EP)
Moisture Sensitivity Level (SOIC20W)
1. Per IPC / JEDEC JSTD020C
Symbol
Tsld
MSL
MSL
MSL
Min Max
260
Level 1
Level 2
Level 3
Unit
°C
ELECTRICAL CHARACTERISTICS (VCC = 14 V, 40°C < TA < 125°C, unless otherwise specified.)
Characteristic
Symbol
Min
Output Voltage (TA = 25°C, Iout = 1.0 mA)
Output Voltage (6.0 V < VCC < 28 V, 1.0 mA < Iout < 50 mA)
Output Voltage (VCC = 35 V, t < 1.0 s, 1.0 mA < Iout < 50 mA)
Dropout Voltage
Iout = 10 mA
Iout = 50 mA
Vout
Vout
Vout
Vdrop
4.95
4.9
4.9
Typ
5.0
5.0
5.0
0.1
0.2
Max Unit
5.05 V
5.1 V
5.1 V
V
0.25
0.40
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ON Semiconductor NCV4949A
NCV4949A
ELECTRICAL CHARACTERISTICS (continued) (VCC = 14 V, 40°C < TA < 125°C, unless otherwise specified.)
Characteristic
Symbol Min Typ
Iout = 100 mA
Input to Output Voltage Difference in Undervoltage Condition
(VCC = 4.0 V, Iout = 35 mA)
Line Regulation (6.0 V < VCC < 28 V, Iout = 1.0 mA)
Load Regulation (1.0 mA < Iout < 100 mA)
Current Limit
Vout = 4.5 V
Vout = 0 V
Quiescent Current (Iout = 0.3 mA, TA < 100°C)
Quiescent Current (Iout = 100 mA)
RESET
0.3
VIO 0.2
Regline 1.0
Regload 8.0
ILim
105 200
100
IQSE
IQ
150
−−
Reset Threshold Voltage
Reset Threshold Hysteresis
@ TA = 25°C
@ TA = 40 to +125°C
Reset Pulse Delay (CT = 100 nF, tR 100 ms)
Reset Reaction Time (CT = 100 nF)
Reset Output Low Voltage (RReset = 10 kW to Vout, VCC 3.0 V)
Reset Output High Leakage Current (VReset = 5.0 V)
Delay Comparator Threshold
Delay Comparator Threshold Hysteresis
SENSE
VResth
VResth,hys
tResD
tResR
VResL
IResH
VCTth
VCTth, hys
50
50
55
4.5
100
100
5.0
2.0
100
Sense Low Threshold (VSI Decreasing = 1.5 V to 1.0 V)
Sense Threshold Hysteresis
Sense Output Low Voltage (VSI 1.16 V, VCC 3.0 V, RSO = 10 kW to Vout)
Sense Output Leakage (VSO = 5.0 V, VSI 1.5 V)
Sense Input Current
PREREGULATOR
VSOth
VSOth,hys
VSOL
ISOH
ISI
1.16
20
1.0
1.23
100
0.1
Preregulator Output Voltage (IZ = 10 mA)
VZ 6.3
Max
0.50
0.4
20
30
400
260
5.0
200
300
180
30
0.4
1.0
1.35
200
0.4
1.0
1.0
Unit
V
mV
mV
mA
mA
mA
V
mV
ms
ms
V
mA
V
mV
V
mV
V
mA
mA
V
PIN FUNCTION DESCRIPTION
Pin
SO8, SO8 EP
Pin
SO20 W
1 19
2 20
31
42
5 47, 1417
6 10
7 11
8 12
3, 8, 9, 13, 18
Symbol
VCC
Si
VZ
CT
GND
Reset
SO
Vout
NC
Description
Supply Voltage
Input of Sense Comparator
Output of Preregulator
Reset Delay Capacitor
Ground
Output of Reset Comparator
Output of Sense Comparator
Main Regulator Output
No Connect
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