NCP551, NCV551
150 mA CMOS Low Iq
Low-Dropout Voltage
Regulator
The NCP551 series of fixed output low dropout linear regulators are
designed for handheld communication equipment and portable battery
powered applications which require low quiescent. The NCP551
series features an ultra−low quiescent current of 4.0
mA.
Each device
contains a voltage reference unit, an error amplifier, a PMOS power
transistor, resistors for setting output voltage, current limit, and
temperature limit protection circuits.
The NCP551 has been designed to be used with low cost ceramic
capacitors and requires a minimum output capacitor of 0.1
mF.
The
device is housed in the TSOP−5 surface mount package. Standard
voltage versions are 1.4, 1.5, 1.8, 2.5, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3,
3.8 and 5.0 V. Other voltages are available in 100 mV steps.
Features
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1
TSOP−5
(SOT23−5, SC59−5)
SN SUFFIX
CASE 483
PIN CONNECTIONS AND
MARKING DIAGRAM
V
in
GND
Enable
1
xxxAYWG
G
2
3
5
V
out
•
•
•
•
•
Low Quiescent Current of 4.0
mA
Typical
Maximum Operating Voltage of 12 V
Low Output Voltage Option
High Accuracy Output Voltage of 2.0%
Industrial Temperature Range of −40°C to 85°C
(NCV551, T
A
= −40°C to +125°C)
•
NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
•
These Devices are Pb−Free and are RoHS Compliant
Typical Applications
4
N/C
(Top View)
xxx = Specific Device Code
A
= Assembly Location
Y
= Year
W = Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
•
Battery Powered Instruments
•
Hand−Held Instruments
•
Camcorders and Cameras
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
V
in
1
Thermal
Shutdown
Driver w/
Current
Limit
5
V
out
Enable
ON
OFF
3
GND
2
Figure 1. Representative Block Diagram
©
Semiconductor Components Industries, LLC, 2014
1
June, 2014 − Rev. 18
Publication Order Number:
NCP551/D
NCP551, NCV551
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Junction−to−Ambient
PSIJ−Lead 2
R
qJA
1 oz Copper Thickness, 100 mm
2
1 oz Copper Thickness, 100 mm
2
Y
J−L2
NOTE:
Single component mounted on an 80 x 80 x 1.5 mm FR4 PCB with stated copper head spreading area. Using the following
boundary conditions as stated in EIA/JESD 51−1, 2, 3, 7, 12.
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PIN FUNCTION DESCRIPTION
Pin No.
1
2
3
4
5
Pin Name
V
in
Description
Positive power supply input voltage.
Power supply ground.
GND
Enable
N/C
This input is used to place the device into low−power standby. When this input is pulled low, the
device is disabled. If this function is not used, Enable should be connected to V
in
.
No Internal Connection.
V
out
Regulated output voltage.
MAXIMUM RATINGS
Rating
Input Voltage
Symbol
V
in
Value
0 to 12
Unit
V
V
V
Enable Voltage
Output Voltage
V
EN
V
out
P
D
T
J
−0.3 to V
in
+0.3
−0.3 to V
in
+0.3
Power Dissipation
Internally Limited
+150
W
Operating Junction Temperature
Operating Ambient Temperature
Storage Temperature
°C
°C
°C
NCP551
NCV551
T
A
−40 to +85
−40 to +125
T
stg
−55 to +150
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. This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per MIL−STD−883, Method 3015
Machine Model Method 200 V
Charge Device Model (CDM) tested C3B per EIA/JESD22−C101.
2. Latchup capability (85°C)
"100
mA DC with trigger voltage.
THERMAL CHARACTERISTICS
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Á
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Á
Rating
Symbol
Test Conditions
Typical Value
250
68
Unit
°C/W
°C/W
NCP551, NCV551
ELECTRICAL CHARACTERISTICS
(V
in
= V
out(nom.)
+ 1.0 V, V
EN
= V
in
, C
in
= 1.0
mF,
C
out
= 1.0
mF,
T
A
= 25°C, unless otherwise noted.)
Characteristic
Output Voltage (T
A
= 25°C, I
out
= 10 mA)
1.4 V
1.5 V
1.8 V
2.5 V
2.7 V
2.8 V
2.9 V
3.0 V
3.1 V
3.2 V
3.3 V
3.8 V
5.0 V
Output Voltage (T
A
= T
low
to T
high
, I
out
= 10 mA)
1.4 V
1.5 V
1.8 V
2.5 V
2.7 V
2.8 V
2.9 V
3.0 V
3.1 V
3.2 V
3.3 V
3.8 V
5.0 V
Line Regulation (V
in
= V
out
+ 1.0 V to 12 V, I
out
= 10 mA)
Load Regulation (I
out
= 10 mA to 150 mA, V
in
= V
out
+ 2.0 V)
Output Current (V
out
= (V
out
at I
out
= 100 mA) −3%)
1.4 V−2.0 V (V
in
= 4.0 V)
2.1 V−3.0 V (V
in
= 5.0 V)
3.1 V−4.0 V (V
in
= 6.0 V)
4.1 V−5.0 V (V
in
= 8.0 V)
Dropout Voltage (I
out
= 10 mA, Measured at V
out
−3.0%)
1.4 V
1.5 V, 1.8 V, 2.5 V
2.7 V, 2.8 V, 2.9 V, 3.0 V, 3.1 V, 3.2 V, 3.3 V, 3.8 V, 5.0 V
Quiescent Current
(Enable Input = 0 V)
(Enable Input = V
in
, I
out
= 1.0 mA to I
o(nom.)
)
1.4 V−2.0 V options, V
in
= 4.0 V
2.1 V−3.0 V options, V
in
= 5.0 V
3.1 V−4.0 V options, V
in
= 6.0 V
4.1 V−5.0 V options, V
in
= 8.0 V
Output Voltage Temperature Coefficient
Enable Input Threshold Voltage
(Voltage Increasing, Output Turns On, Logic High)
(Voltage Decreasing, Output Turns Off, Logic Low)
Symbol
V
out
1.358
1.455
1.746
2.425
2.646
2.744
2.842
2.940
3.038
3.136
3.234
3.724
4.90
V
out
1.344
1.440
1.728
2.400
2.619
2.716
2.813
2.910
3.007
3.104
3.201
3.686
4.850
Reg
line
Reg
load
I
o(nom.)
Min
Typ
1.4
1.5
1.8
2.5
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.8
5.0
1.4
1.5
1.8
2.5
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.8
5.0
10
40
−
−
−
−
170
130
40
0.1
4.0
Max
1.442
1.545
1.854
2.575
2.754
2.856
2.958
3.060
3.162
3.264
3.366
3.876
5.10
Unit
V
V
1.456
1.560
1.872
2.600
2.781
2.884
2.987
3.090
3.193
3.296
3.399
3.914
5.150
30
65
−
−
−
−
mV
−
−
−
250
220
150
mA
−
−
1.0
8.0
mV
mV
mA
150
150
150
150
−
−
V
in
−V
out
I
Q
T
c
V
th(en)
−
1.3
−
"100
−
−
−
−
0.3
ppm/°C
V
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NCP551, NCV551
ELECTRICAL CHARACTERISTICS
(continued)
(V
in
= V
out(nom.)
+ 1.0 V, V
EN
= V
in
, C
in
= 1.0
mF,
C
out
= 1.0
mF,
T
A
= 25°C, unless otherwise noted.)
Output Short Circuit Current (V
out
= 0 V)
1.4 V−2.0 V (V
in
= 4.0 V)
2.1 V−3.0 V (V
in
= 5.0 V)
3.1 V−4.0 V (V
in
= 6.0 V)
4.1 V−5.0 V (V
in
= 8.0 V)
I
out(max)
mA
160
160
160
160
350
350
350
350
600
600
600
600
3. Maximum package power dissipation limits must be observed.
TJ(max)
*
TA
PD
+
R
qJA
4. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
T
high
= +85°C
5. NCP551
T
low
= −40°C
T
high
= +125°C.
NCV551
T
low
= −40°C
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NCP551, NCV551
DEFINITIONS
Load Regulation
Line Regulation
The change in output voltage for a change in output
current at a constant temperature.
Dropout Voltage
The input/output differential at which the regulator output
no longer maintains regulation against further reductions in
input voltage. Measured when the output drops 3% below its
nominal. The junction temperature, load current, and
minimum input supply requirements affect the dropout level.
Maximum Power Dissipation
The change in output voltage for a change in input voltage.
The measurement is made under conditions of low
dissipation or by using pulse technique such that the average
chip temperature is not significantly affected.
Line Transient Response
Typical over and undershoot response when input voltage
is excited with a given slope.
Thermal Protection
The maximum total dissipation for which the regulator
will operate within its specifications.
Quiescent Current
The quiescent current is the current which flows through
the ground when the LDO operates without a load on its
output: internal IC operation, bias, etc. When the LDO
becomes loaded, this term is called the Ground current. It is
actually the difference between the input current (measured
through the LDO input pin) and the output current.
Internal thermal shutdown circuitry is provided to protect
the integrated circuit in the event that the maximum junction
temperature is exceeded. When activated at typically 160°C,
the regulator turns off. This feature is provided to prevent
failures from accidental overheating.
Maximum Package Power Dissipation
The maximum power package dissipation is the power
dissipation level at which the junction temperature reaches
its maximum operating value, i.e. 125°C. Depending on the
ambient power dissipation and thus the maximum available
output current.
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