NCP4682, NCP4685
150 mA, Ultra Low Supply
Current, Low Dropout
Regulator
The NCP4682 and NCP4685 are CMOS Low Dropout Linear
voltage regulators with 150 mA output current capability. The devices
have high output voltage accuracy, a 1
mA
(typ.) ultra low supply
current and high ripple rejection. Current fold−back protection is
integrated in the devices to protect against over current and short
current conditions. A Chip Enable (NCP4682 only) function is
included to save power by further lowering supply current, which is
advantageous for battery powered applications. The NCP4685 is
optimized for the lowest quiescent current possible in applications
where the device is always on.
Features
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MARKING
DIAGRAMS
SOT−23−5
CASE 1212
XXX MG
G
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Operating Input Voltage Range: 1.70 V to 5.25 V
Output Voltage Range: 1.2 V to 3.3 V (available in 0.1 V steps)
Output Voltage Accuracy:
±0.8%
Excellent Output Voltage Temperature Coefficient :
±40
ppm/°C
Supply Current: 1.0
mA
(excluding CE pull down current)
Standby Current: 0.1
mA
Dropout Voltage: 0.24 V (I
OUT
= 150 mA, V
OUT
= 2.8 V)
Line Regulation: 0.02%/V Typ.
Stable with Ceramic Capacitors: 0.1
mF
or more
Current Fold Back Protection
Available in UDFN4 1.0 x 1.0 mm, SC−82AB, SOT23 Packages
These are Pb−Free Devices
Battery−Powered Equipment
Networking and Communication Equipment
Cameras, DVRs, STB and Camcorders
Home Appliances
SC−82AB
CASE 419C
XXX M
G
1
1
UDFN4
CASE 517BR
1
XX
MM
XXX, XX = Specific Device Code
M, MM = Date Code
G
= Pb−Free Package
(*Note: Microdot may be in either location)
Typical Applications
ORDERING INFORMATION
See detailed ordering, marking and shipping information in the
package dimensions section on page 19 of this data sheet.
VIN
NCP4682x
VIN
CE
C1
100n
VOUT
GND
VOUT
VIN
C1
100n
NCP4685x
VIN
VOUT
GND
VOUT
C2
100n
C2
100n
Figure 1. Typical Application Schematics
©
Semiconductor Components Industries, LLC, 2012
October, 2012
−
Rev. 3
1
Publication Order Number:
NCP4682/D
NCP4682, NCP4685
VIN
VOUT VIN
VOUT
Vref
Vref
CE
Current Limit
CE
GND
Current Limit
GND
NCP4682Hxxxx
NCP4682Dxxxx
VIN
VOUT
Vref
NC
Current Limit
GND
NCP4685Exxxx
Figure 2. Simplified Schematic Block Diagram
PIN FUNCTION DESCRIPTION
Pin No.
UDFN1010*
1
2
3
4
−
Pin No.
SC−82AB
3
2
1
4
−
Pin No.
SOT23
5
2
3
1
4
Pin Name
V
OUT
GND
CE/NC
V
IN
NC
Output pin
Ground
Chip enable pin (Active “H”) / No connection
Input pin
No connection
Description
*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
Symbol
V
IN
V
OUT
V
CE
I
OUT
Value
6.0
−0.3
to V
IN
+ 0.3
6.0
200
Unit
V
V
V
mA
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NCP4682, NCP4685
ABSOLUTE MAXIMUM RATINGS
Rating
Power Dissipation UDFN1010
Power Dissipation SC−82AB
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
P
D
Symbol
Value
400
380
420
−40
to 150
−55
to 125
2000
200
°C
°C
V
V
mW
Unit
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. Refer to ELECTRICAL CHARACTERISTIS 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.
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−82AB
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
= 0.1
mF,
unless otherwise noted.
Typical values are at T
A
= +25°C.
Parameter
Operating Input Voltage
Output Voltage
T
A
= +25
°C
−40°C
≤
T
A
≤
85°C
Output Voltage Temp. Coefficient
Line Regulation
Load Regulation
Dropout Voltage
Test Conditions
(Note 3)
V
OUT
≥
2.0 V
V
OUT
< 2.0 V
V
OUT
≥
2.0 V
V
OUT
< 2.0 V
−40°C
≤
T
A
≤
85°C
V
OUT(NOM)
+ 0.5 V
≤
V
IN
≤
5.0 V
I
OUT
= 1 mA to 150 mA
I
OUT
= 150 mA
1.2 V
≤
V
OUT
< 1.5 V
1.5 V
≤
V
OUT
< 1.7 V
1.7 V
≤
V
OUT
< 2.0 V
2.0 V
≤
V
OUT
< 2.5 V
2.5 V
≤
V
OUT
< 2.8 V
2.8 V
≤
V
OUT
< 3.3 V
Output Current
Short Current Limit
Quiescent Current
V
OUT
= 0 V
I
OUT
I
SC
I
Q
150
40
1.0
1.5
DV
OUT
/
DT
A
Line
Reg
Load
Reg
V
DO
Symbol
V
IN
V
OUT
Min
1.70
x0.992
−16
x0.985
−30
±40
0.02
10
0.76
0.53
0.44
0.34
0.28
0.24
0.10
20
1.05
0.80
0.65
0.50
0.40
0.32
mA
mA
mA
Typ
Max
5.25
x1.008
16
x1.015
30
Unit
V
V
mV
V
mV
ppm/°C
%/V
mV
V
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NCP4682, NCP4685
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
= 0.1
mF,
unless otherwise noted.
Typical values are at T
A
= +25°C.
Parameter
Standby Current
CE Pin Threshold Voltage
(NCP4682 only)
CE Pull Down Current
Power Supply Rejection Ratio
Output Noise Voltage
Low Output Nch Tr. On Resistance
Test Conditions
V
CE
= 0 V, T
A
= 25°C, NCP4682 only
CE Input Voltage “H”
CE Input Voltage “L”
NCP4682 only
V
IN
= 2.2 V, V
OUT
= 1.2 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
= 2.2 V
V
IN
= 4 V, V
CE
= 0 V, NCP4682D only
Symbol
I
STB
V
CEH
V
CEL
I
CEPD
PSRR
V
N
R
LOW
0.3
30
70
30
1.5
0.3
mA
dB
mV
rms
W
Min
Typ
0.1
Max
1.0
Unit
mA
V
3. The maximum Input Voltage of the Electrical Characteristics is 5.25 V. In case of exceeding this specification, the IC must be operated n
condition that the Input Voltage is up to 5.50 V and total operation time is within 500 hours.
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NCP4682, NCP4685
TYPICAL CHARACTERISTICS
1.4
1.2
1.0
V
OUT
(V)
0.8
0.6
0.4
0.2
0.0
1.7 V
2.0 V
2.3 V
V
OUT
(V)
V
IN
= 2.6 V
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.4 V
V
IN
= 2.8 V
3.7 V
3.1 V
0
100
200
300
400
500
0
100
200
300
I
OUT
(mA)
400
500
I
OUT
(mA)
Figure 3. Output Voltage vs. Output Current
1.2 V Version (T
J
= 255C)
Figure 4. Output Voltage vs. Output Current
2.5 V Version (T
J
= 255C)
3.0
2.5
2.0
V
OUT
(V)
1.5
1.0
0.5
0.0
3.4 V
3.7 V
V
OUT
(V)
4.1 V
V
IN
= 3.1 V
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
100
200
300
400
500
0.0
0
100
200
300
I
OUT
(mA)
400
500
V
IN
= 4.5 V
4.2 V
3.9 V
3.6 V
I
OUT
(mA)
Figure 5. Output Voltage vs. Output Current
2.8 V Version (T
J
= 255C)
0.90
0.80
0.70
0.60
V
DO
(V)
0.50
0.40
0.30
0.20
0.10
0.00
0
25
50
75
I
OUT
(mA)
100
125
150
T
J
= 85°C
25°C
V
DO
(V)
−40°C
0.30
0.25
0.20
Figure 6. Output Voltage vs. Output Current
3.3 V Version (T
J
= 255C)
T
J
= 85°C
0.15
0.10
0.05
0.00
−40°C
25°C
0
25
50
Figure 7. Dropout Voltage vs. Output Current
1.2 V Version
Figure 8. Dropout Voltage vs. Output Current
2.5 V Version
75
I
OUT
(mA)
100
125
150
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