NCP4640
50 mA, Wide Input Range,
Voltage Regulator
The NCP4640 is a CMOS 50 mA linear voltage regulator with high
input voltage and ultra−low supply current. It incorporates multiple
protection features such as peak current limit, short circuit current
limit and thermal shutdown to ensure a very robust device.
A high maximum input voltage tolerance of 50 V and a wide
temperature range make the NCP4640 suitable for a variety of
demanding applications.
Features
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MARKING
DIAGRAMS
•
•
•
•
•
•
•
•
•
•
Operating Input Voltage Range: 4 V to 36 V
Output Voltage Range: 2.0 to 12.0 V (0.1 steps)
±2%
Output Voltage Accuracy
Output Current: min 50 mA (V
IN
= 8 V, V
OUT
= 5 V)
Line Regulation: 0.05%/V
Peak Current Limit Circuit
Short Current Limit Circuit
Thermal Shutdown Circuit
Available in SOT−89−5 and SOIC6−TL Package
These are Pb−Free Devices
SOIC6−TL
CASE 751BR
XXX
XMM
1
1
XXX
XMM
SOT−89 5
CASE 528AB
Typical Applications
•
Power source for home appliances
•
Power source for car audio equipment, navigation system
•
Power source for notebooks, digital TVs, cordless phones and private
LAN systems
•
Power source for office equipment machines such as copiers,
printers, facsimiles, scanners, projectors, etc.
VIN
C1
100n
NCP4640x
VIN
CE
VOUT
GND
VOUT
C2
100n
XXXX
MM
= Specific Device Code
= Date Code
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 15 of this data sheet.
Figure 1. Typical Application Schematic
©
Semiconductor Components Industries, LLC, 2011
February, 2011
−
Rev. 1
1
Publication Order Number:
NCP4640/D
NCP4640
VIN
Internal
VR
Vref
VOUT
CE
Current Limit
Short Protection
Thermal Shutdown
GND
Figure 2. Simplified Schematic Block Diagram
PIN FUNCTION DESCRIPTION
Pin No.
SOT89
5
2
4
−
3
1
Pin No.
SOIC6−TL
6
2
4
5
3
1
Pin Name
VIN
GND
GND
GND
CE
VOUT
Input pin
Ground pin, all ground pins must be connected together when it is
mounted on board
Ground pin, all ground pins must be connected together when it is
mounted on board
Ground pin, all ground pins must be connected together when it is
mounted on board
Chip enable pin (“H” active)
Output pin
Description
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2
NCP4640
ABSOLUTE MAXIMUM RATINGS
Rating
Input Voltage
Peak Input Voltage (Note 1)
Output Voltage
Chip Enable Input
Output Current
Power Dissipation SOT−89
Power Dissipation SOIC6−TL
Junction Temperature
Storage Temperature
ESD Capability, Human Body Model (Note 2)
ESD Capability, Machine Model (Note 2)
T
J
T
STG
ESD
HBM
ESD
MM
Symbol
V
IN
V
IN
V
OUT
V
CE
I
OUT
P
D
Value
−0.3
to 50
60
−0.3
to V
IN
+ 0.3
≤
50
−0.3
to V
IN
+ 0.3
≤
50
150
900
1700
−40
to 150
−55
to 125
2000
200
°C
°C
V
V
Unit
V
V
V
V
mA
mW
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.
1. Duration time = 200 ms
2. This device series incorporates ESD protection and is tested by the following methods:
ESD Human Body Model tested per AEC−Q100−002 (EIA/JESD22−A114)
ESD Machine Model tested per AEC−Q100−003 (EIA/JESD22−A115)
Latchup Current Maximum Rating tested per JEDEC standard: JESD78.
THERMAL CHARACTERISTICS
Rating
Thermal Characteristics, SOT−89
Thermal Resistance, Junction−to−Air
Thermal Characteristics, SOIC6−TL
Thermal Resistance, Junction−to−Air
Symbol
R
qJA
R
qJA
Value
111
59
Unit
°C/W
°C/W
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3
NCP4640
ELECTRICAL CHARACTERISTICS
T
A
= 25°C
Parameter
Operating Input Voltage
Output Voltage
Output Voltage Temp.
Coefficient
Line Regulation
Load Regulation
V
IN
= V
OUT
+ 3 V, I
OUT
= 1 mA
V
IN
= V
OUT
+ 3 V, I
OUT
= 1 mA, T
A
=
−40
to
105°C
V
IN
= V
OUT
+ 1.5 V to 36 V, I
OUT
= 1 mA
V
IN
= V
OUT
+ 3 V,
I
OUT
= 1 mA to 40 mA
I
OUT
= 20 mA
2.0 V
≤
V
OUT
< 5.0 V
5.0 V
≤
V
OUT
< 12.0 V
2.0 V
≤
V
OUT
< 3.7 V
3.7 V
≤
V
OUT
< 4.0 V
4.0 V
≤
V
OUT
< 5.0 V
5.0 V
≤
V
OUT
< 12.0 V
Output Current
Short Current Limit
Quiescent Current
Standby Current
CE Pin Threshold Voltage
V
IN
= V
OUT
+ 3 V
V
OUT
= 0 V
V
IN
= V
OUT
+ 3 V, I
OUT
= 0 mA
V
IN
= 36 V, V
CE
= 0 V
CE Input Voltage “H”
CE Input Voltage “L”
Thermal Shutdown Temperature
Thermal Shutdown Release
Temperature
Power Supply Rejection Ratio
Output Noise Voltage
V
IN
= 5.0 V, V
OUT
= 2.0 V,
ΔV
IN PK−PK
= 0.2 V,
I
OUT
= 30 mA, f = 1 kHz
V
OUT
= 2.0 V, I
OUT
= 30 mA, f = 10 Hz to
100 kHz
I
OUT
I
SC
I
Q
I
STB
V
CEH
V
CEL
T
SD
T
SR
PSRR
V
N
1.5
0
150
125
30
80
50
50
9
0.1
20
1
V
IN
0.3
°C
°C
dB
mV
rms
V
DO
0.35
0.25
0.20
Line
Reg
Load
Reg
Test Conditions
Symbol
V
IN
V
OUT
Min
4
x0.98
±100
0.05
10
20
0.20
25
35
(Note 3)
0.60
0.40
0.35
mA
mA
mA
mA
V
V
Typ
Max
36
x1.02
Unit
V
V
ppm/°C
%/V
mV
Dropout Voltage
3. Dropout voltage for 2.0 V
≤
V
OUT
< 3.7 V can be computed by this formula: V
DO
= 4 V
−
V
OUTSET
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4
NCP4640
TYPICAL CHARACTERISTICS
2.5
2.0
1.5
1.0
0.5
0.0
V
IN
= 4.0 V
4.5 V
5.0 V
5.5 V
V
OUT
(V)
2.0
1.5
1.0
0.5
0
50
100
I
OUT
(mA)
150
200
0.0
0
50
100
I
OUT
(mA)
150
200
V
OUT
(V)
3.5
3.0
2.5
6.0 V
V
IN
= 6.5 V
5.0 V
5.5 V
Figure 3. Output Voltage vs. Output Current
2.0 V Version (T
J
= 255C)
Figure 4. Output Voltage vs. Output Current
3.3 V Version (T
J
= 255C)
9.0
8.0
7.0
6.0
V
OUT
(V)
5.0
4.0
3.0
2.0
1.0
0.0
0
50
100
I
OUT
(mA)
150
200
10 V
10.5 V
11 V
11.5 V
V
OUT
(V)
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
0
50
100
I
OUT
(mA)
150
200
15.5 V
14 V
14.5 V
15 V
Figure 5. Output Voltage vs. Output Current
8.0 V Version (T
J
= 255C)
Figure 6. Output Voltage vs. Output Current
12 V Version (T
J
= 255C)
1.50
1.25
1.00
V
DO
(V)
V
DO
(V)
T
J
= 25°C
105°C
0.75
0.50
0.25
−40°C
0.00
0
10
20
30
I
OUT
(mA)
40
50
1.50
1.25
1.00
0.75
0.50
0.25
0.00
T
J
= 25°C
105°C
−40°C
0
10
20
30
I
OUT
(mA)
40
50
Figure 7. Dropout Voltage vs. Output Current
8.0 V Version
Figure 8. Dropout Voltage vs. Output Current
12 V Version
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