NCP4683
300 mA, Low Dropout
Regulator
The NCP4683 is a CMOS Linear voltage regulator with 300 mA
output current capability. The device has high output voltage accuracy,
low supply current and high ripple rejection. The NCP4683 is easy to
use, with output current fold−back protection circuit included. A Chip
Enable function is included to save power by lowering supply current.
The line and load transient responses are very good, thus this regulator
is suitable for use as a power supply for communication equipment.
Features
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MARKING
DIAGRAMS
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Operating Input Voltage Range: 1.40 V to 5.25 V
Output Voltage Range: 0.8 V to 3.6 V (available in 0.1 V steps)
Output Voltage Accuracy:
±1.0%
(V
OUT
> 2.0 V)
Supply Current: 50
mA
Dropout Voltage: 0.25 V (I
OUT
= 300 mA, V
OUT
= 2.8 V)
High PSRR: 70 dB (f = 1 kHz)
Line Regulation: 0.02%/V Typ.
Stable with Ceramic Capacitors: 1.0
mF
or more
Current Fold Back Protection
Available in UDFN4 1.0 x 1.0 mm, SC−70, SOT23 Packages
These are Pb−Free Devices
XXX
M
SOT−23−5
CASE 1212
SC−70
CASE 419A
XXX
XMM
1
UDFN4
CASE 517BR
1
XX
MM
Typical Applications
Battery−powered Equipment
Networking and Communication Equipment
Cameras, DVRs, STB and Camcorders
Home Appliances
VIN
C1
1m
NCP4683x
VIN
CE
GND
VOUT
C2
1m
VOUT
XX, XXX, XXXX = Specific Device Code
M, MM
= Date Code
ORDERING INFORMATION
See detailed ordering, marking and shipping information in the
package dimensions section on page 18 of this data sheet.
Figure 1. Typical Application Schematic
©
Semiconductor Components Industries, LLC, 2016
1
February, 2016 − Rev. 3
Publication Order Number:
NCP4683/D
NCP4683
VIN
VOUT
VIN
VOUT
Vref
Vref
Current Limit
CE
Current Limit
CE
GND
GND
NCP4683Hxxxx
NCP4683Dxxxx
Figure 2. Simplified Schematic Block Diagram
PIN FUNCTION DESCRIPTION
Pin No.
UDFN1010*
1
2
3
4
−
Pin No.
SC−70
4
3
1
5
2
Pin No.
SOT23
5
2
3
1
4
Pin Name
V
OUT
GND
CE
V
IN
NC
Description
Output pin
Ground
Chip enable pin (Active “H”)
Input pin
No connection
*Tab is GND level. (They are connected to the reverse side of this IC.
The tab is better to be connected to the GND, but leaving it open is also acceptable.
ABSOLUTE MAXIMUM RATINGS
Rating
Input Voltage (Note 1)
Output Voltage
Chip Enable Input
Output Current
Power Dissipation UDFN1010
Power Dissipation SC−70
Power Dissipation SOT23
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
OUT
V
CE
I
OUT
P
D
Value
6.0
−0.3 to V
IN
+ 0.3
−0.3 to 6.0
400
400
380
420
−40 to 150
−55 to 125
2000
200
°C
°C
V
V
Unit
V
V
V
mA
mW
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Refer to ELECTRICAL CHARACTERISTICS and APPLICATION INFORMATION for Safe Operating Area.
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.
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NCP4683
THERMAL CHARACTERISTICS
Rating
Thermal Characteristics, UDFN 1.0 x 1.0 mm
Thermal Resistance, Junction−to−Air
Thermal Characteristics, SOT23
Thermal Resistance, Junction−to−Air
Thermal Characteristics, SC−70
Thermal Resistance, Junction−to−Air
Symbol
R
qJA
R
qJA
R
qJA
Value
250
238
263
Unit
°C/W
°C/W
°C/W
ELECTRICAL CHARACTERISTICS
−40°C
≤
T
A
≤
85°C; V
IN
= V
OUT(NOM)
+ 1 V or 2.5 V, whichever is greater; I
OUT
= 1 mA, C
IN
= C
OUT
= 1.0
mF,
unless otherwise noted.
Typical values are at T
A
= +25°C.
Parameter
Operating Input Voltage
Output Voltage
T
A
= +25°C
V
OUT
≥
2.0 V
V
OUT
< 2.0 V
−40°C
≤
T
A
≤
85°C
V
OUT
≥
2.0 V
V
OUT
< 2.0 V
Output Voltage Temp. Coefficient
Line Regulation
Load Regulation
Dropout Voltage
−40°C
≤
T
A
≤
85°C
V
OUT(NOM)
+ 0.5 V
≤
V
IN
≤
5.0 V
I
OUT
= 1 mA to 300 mA
I
OUT
= 300 mA
V
OUT
= 0.8 V
V
OUT
= 0.9 V
1.0 V
≤
V
OUT
< 1.2 V
1.2 V
≤
V
OUT
< 1.4 V
1.4 V
≤
V
OUT
< 1.7 V
1.7 V
≤
V
OUT
< 2.1 V
2.1 V
≤
V
OUT
< 2.5 V
2.5 V
≤
V
OUT
< 3.0 V
3.0 V
≤
V
OUT
< 3.6 V
Output Current
Short Current Limit
Quiescent Current
Standby Current
CE Pin Threshold Voltage
V
CE
= 0 V, T
A
= 25°C
CE Input Voltage “H”
CE Input Voltage “L”
CE Pull Down Current
Power Supply Rejection Ratio
V
IN
= V
OUT
+ 1 V or V
IN
= 3 V,
DV
IN
= 0.2 V
pk−pk
,
I
OUT
= 30 mA, f = 1 kHz
f = 10 Hz to 100 kHz, I
OUT
= 30 mA,
V
OUT
= 1.2 V, V
IN
= 3.2 V
V
IN
= 4 V, V
CE
= 0 V, D version only
V
OUT
= 0 V
I
OUT
I
SC
I
Q
I
STB
V
CEH
V
CEL
I
CEPD
PSRR
0.3
65
1.0
0.4
mA
dB
300
60
50
0.1
75
1.0
DV
OUT
/DT
A
Line
Reg
Load
Reg
V
DO
Test Conditions
Symbol
V
IN
V
OUT
Min
1.40
x0.99
−20
x0.97
−60
±80
0.02
15
0.56
0.51
0.46
0.39
0.35
0.30
0.26
0.25
0.22
0.10
40
0.72
0.65
0.59
0.50
0.44
0.39
0.34
0.30
0.29
mA
mA
mA
mA
V
Typ
Max
5.25
x1.01
20
x1.03
60
Unit
V
V
mV
V
mV
ppm/°C
%/V
mV
V
Output Noise Voltage
Low Output Nch Tr. On Resistance
V
N
R
LOW
65
50
mV
rms
W
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
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NCP4683
TYPICAL CHARACTERISTICS
1.4
1.2
V
IN
= 5.25 V
1.0
V
OUT
(V)
0.8
0.6
0.4
0.2
0
0
100
200
300
400
I
OUT
(mA)
500
600
700
5.0 V
4.2 V
3.6 V
V
OUT
(V)
2.2 V
2.8 V
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
100
200
300
400
I
OUT
(mA)
500
600
700
5.0 V
4.2 V
3.5 V
V
IN
= 5.25 V
2.8 V
Figure 3. Output Voltage vs. Output Current
1.2 V Version (T
J
= 255C)
3.0
2.5
2.0
V
OUT
(V)
1.5
1.0
0.5
0
V
IN
= 5.25 V
5.0 V
V
OUT
(V)
4.2 V
3.5
3.0
Figure 4. Output Voltage vs. Output Current
1.8 V Version (T
J
= 255C)
V
IN
= 5.25 V
2.5
2.0
1.5
1.0
0.5
0.0
5.0 V
4.3 V
3.8 V
0
100
200
300
400
500
600
700
0
100
200
300
400
500
600
700
I
OUT
(mA)
I
OUT
(mA)
Figure 5. Output Voltage vs. Output Current
2.8 V Version (T
J
= 255C)
0.5
0.40
0.35
0.4
T
J
= 85°C
V
DO
(V)
V
DO
(V)
0.3
25°C
0.30
0.25
0.20
0.15
−40°C
0.10
0.1
0.05
0
0
50
100
150
I
OUT
(mA)
200
250
300
0.00
0
Figure 6. Output Voltage vs. Output Current
3.3 V Version (T
J
= 255C)
T
J
= 85°C
25°C
0.2
−40°C
50
100
150
I
OUT
(mA)
200
250
300
Figure 7. Dropout Voltage vs. Output Current
1.2 V Version
Figure 8. Dropout Voltage vs. Output Current
1.8 V Version
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NCP4683
TYPICAL CHARACTERISTICS
0.25
0.25
0.20
T
J
= 85°C
V
DO
(V)
V
DO
(V)
0.15
25°C
−40°C
0.20
0.15
T
J
= 85°C
0.10
25°C
−40°C
0.10
0.05
0.05
0
0
50
100
150
I
OUT
(mA)
200
250
300
0
0
50
100
150
I
OUT
(mA)
200
250
300
Figure 9. Dropout Voltage vs. Output Current
2.8 V Version
1.25
1.24
1.23
1.22
V
OUT
(V)
V
OUT
(V)
1.21
1.20
1.19
1.18
1.17
1.16
1.15
−40
−20
0
20
40
60
80
V
IN
= 2.2 V
1.85
1.84
1.83
1.82
1.81
1.80
1.79
1.78
1.77
1.76
Figure 10. Dropout Voltage vs. Output Current
3.3 V Version
V
IN
= 2.8 V
1.75
−40
−20
0
20
40
60
80
T
J
, JUNCTION TEMPERATURE (°C)
T
J
, JUNCTION TEMPERATURE (°C)
Figure 11. Output Voltage vs. Temperature,
1.2 V Version
2.85
2.84
2.83
2.82
V
OUT
(V)
V
OUT
(V)
2.81
2.80
2.79
2.78
2.77
2.76
2.75
−40
−20
0
20
40
60
80
V
IN
= 3.8 V
3.35
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
3.25
−40
Figure 12. Output Voltage vs. Temperature,
1.8 V Version
V
IN
= 4.3 V
−20
0
20
40
60
80
T
J
, JUNCTION TEMPERATURE (°C)
T
J
, JUNCTION TEMPERATURE (°C)
Figure 13. Output Voltage vs. Temperature,
2.8 V Version
Figure 14. Output Voltage vs. Temperature,
3.3 V Version
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