Semiconductor Components Industries, LLC, 2013
May, 2013 − Rev. 2
1Publication Order Number:
NCP57302/D
NCP57302, NCV57302
3.0 A, Very Low-Dropout
(VLDO) Fast Transient
Response Regulator
The NCP57302 is a high precision, very low dropout (VLDO), low
minimum input voltage and low ground current positive voltage
regulator that is capable of providing an output current in excess of
3.0 A with a typical dropout voltage of 315 mV at 3.0 A load current
and input voltage from 1.8 V and up. The device is stable with ceramic
output capacitors. The device can withstand up to 18 V max input
voltage.
Internal protection features consist of output current limiting,
built−in thermal shutdown and reverse output current protection.
Logic level enable pin is available. The NCP57302 is an adjustable
voltage device and is available in D2PAK−5 package.
Features
Output Current in Excess of 3.0 A
Minimum Operating Input Voltage 1.8 V for Full 3 A Output Current
315 mV Typical Dropout Voltage at 3.0 A
Adjustable Output Voltage Range from 1.24 V to 13 V
Low Ground Current
Fast Transient Response
Stable with Ceramic Output Capacitor
Logic Compatible Enable Pin
Current Limit, Reverse Current and Thermal Shutdown Protection
Operation up to 13.5 V Input Voltage
NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
These are Pb−Free Devices
Applications
Consumer and Industrial Equipment Point of Regulation
Servers and Networking Equipment
FPGA, DSP and Logic Power supplies
Switching Power Supply Post Regulation
Battery Chargers
Functional Replacement for Industry Standard MIC29300,
MIC39300, MIC37300 with Improved Minimum Input Voltage
Specification
MARKING
DIAGRAMS
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dimensions section on page 9 of this data sheet.
ORDERING INFORMATION
D2PAK
CASE 936A
1
557302
AWLYWWG
y
TAB
EN
VIN
GND
VOUT
ADJ
1
y = P (NCP), V (NCV)
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Package
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TYPICAL APPLICATIONS
Figure 1. Adjustable Regulator
++
COUT
47 mF, Ceramic
R1
VIN
EN
VOUT
ADJ
GND
1.3 V
CIN
VIN NCP57302
R2
PIN FUNCTION DESCRIPTION
Pin Number Pin Name Pin Function
1 EN Enable Input: CMOS and TTL logic compatible. Logic high = enable; Logic low = shutdown.
2 VIN Input voltage which supplies both the internal circuitry and the current to the output load
3 GND Ground
TAB TAB TAB is connected to ground.
4 VOUT Linear Regulator Output.
5 ADJ Adjustable Regulator Feedback Input. Connect to output voltage resistor divider central node.
ABSOLUTE MAXIMUM RATINGS
Symbol Rating Value Unit
VIN Supply Voltage 0 to 18 V
VEN Enable Input Voltage 0 to 18 V
VOUT – VIN Reverse VOUT – VIN Voltage (EN = Shutdown or VIN = 0 V) (Note 1) 0 to 6.5 V
PDPower Dissipation (Notes 2 and 3) Internally Limited
TJJunction Temperature –40 v TJ v +125 C
TSStorage Temperature –65 v TJ v +150 C
ESD Rating (Notes 4 and 5) Human Body Model
Machine Model
2000
200
V
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.
NOTE: All voltages are referenced to GND pin unless otherwise noted.
1. The ENABLE pin input voltage must be 0.8 V or VIN must be connected to ground potential.
2. PD(max) = (TJ(max) – TA) / RqJA, where RqJA depends upon the printed circuit board layout.
3. This protection is not guaranteed outside the Recommended Operating Conditions.
4. Devices are ESD sensitive. Handling precautions recommended..
5. This device series incorporates ESD protection and is tested by the following methods:
ESD Human Body Model (HBM) tested per AEC*Q100*002 (EIA/JESD22*A114C)
ESD Machine Model (MM) tested per AEC*Q100*003 (EIA/JESD22*A115C)
This device contains latch*up protection and exceeds 100 mA per JEDEC Standard JESD78.
RECOMMENDED OPERATING CONDITIONS (Note 6)
Symbol Rating Value Unit
VIN Supply Voltage 1.8 to 13.5 V
VEN Enable Input Voltage 0 to 13.5 V
TJJunction Temperature –40 v TJ v +125 C
6. The device is not guaranteed to function outside it’s Recommended operating conditions.
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ELECTRICAL CHARACTERISTICS
TJ = 25C with VIN = VOUT nominal + 0.6 V; VEN = VIN; IL = 10 mA; bold values indicate –40C < TJ < +125C, unless noted. (Note 7)
Parameter Conditions Min Typ Max Unit
Output Voltage Accuracy IL = 10 mA −1.5 +1.5 %
10 mA < IOUT < 3 A , VOUT nominal + 0.6 V v VIN v 13.5 V −2.5 +2.5 %
Output Voltage Line Regulation VIN = VOUT nominal + 0.6 V to 13.5 V; IL = 10 mA 0.02 0.5 %
Output Voltage Load Regulation IL = 10 mA to 3 A 0.2 1 %
VIN – VOUT Dropout Voltage
(Note 8)
IL = 1.0 A (Note 10) 182 295 mV
IL = 1.5 A 220 350 mV
IL = 2.0 A (Note 10) 250 410 mV
IL = 3.0 A 315 520 mV
Ground Pin Current (Note 9) IL = 3.0 A 60 90
120
mA
Ground Pin Current in Shutdown VEN v 0.5 V 1.0 5 mA
Overload Protection Current Limit VOUT = 0 V 3.5 5A
Start−up Time VEN = VIN, VOUT nominal = 2.5 V, IOUT = 10 mA,
COUT = 47 mF
100 500 ms
Reference Voltage 1.221
1.209
1.240 1.259
1.271
V
Adjust Pin Bias Current 100 200
350
nA
ENABLE INPUT
Enable Input Signal Levels Regulator enable 1.4 V
Regulator shutdown 0.8 V
Enable pin Input Current VEN v 0.8 V (Regulator shutdown) 2
4
mA
6.5 V > VEN w 1.4 V (Regulator enable) 15 30
40
mA
7. VOUTnominal can be set by external resistor divider in the application. Tested for VOUTnominal = 1.240 V unless noted.
8. VDO = VIN – VOUT when VOUT decreases to 98% of its nominal output voltage with VIN = VOUT + 1 V. Tested for VOUTnominal = 2.5 V.
9. IIN = IGND + IOUT
.
10.Guaranteed by design.
Package Conditions / PCB Footprint Thermal Resistance
D2PAK–5, Junction−to−Case RqJC = 2.1C/W
D2PAK–5, Junction−to−Air PCB with 100 mm2 2.0 oz Copper Heat Spreading Area RqJA = 52C/W
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TYPICAL CHARACTERISTICS
TJ = 25C if not otherwise noted
PSRR (dB)
FREQUENCY (Hz)
Figure 2. Power Supply Rejection Ratio
COUT = 100 mF
Ceramic
COUT = 47 mF
Ceramic
VIN = 3.5 V
VOUT = 2.5 V,
IOUT = 3 A,
CIN = 0 0
10
20
30
40
50
60
70
80
90
100
10 100 1000 10k 100k 1M
PSRR (dB)
FREQUENCY (Hz)
Figure 3. Power Supply Rejection Ratio
COUT = 100 mF
Ceramic
COUT = 47 mF
Ceramic
VIN = 3.5 V
VOUT = 2.5 V,
IOUT = 1 A,
CIN = 0
0
10
20
30
40
50
60
70
80
90
100
10 100 1000 10k 100k 1M
DROPOUT (
m
V)
OUTPUT CURRENT (A)
0
50
100
150
200
250
300
350
400
450
500
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Figure 4. Dropout Voltage vs. Output Current
VOUTnom = 2.5 V
0
50
100
150
200
250
300
350
400
500
−50 −30 −10 10 30 50 70 90 110 13
0
DROPOUT (mV)
Figure 5. Dropout Voltage vs. Temperature
VOUTnom = 2.5 V
OUTPUT VOLTAGE (V)
SUPPLY VOLTAGE (V)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1 1.2 1.4 1.6 1.8 2
Figure 6. Dropout Characteristics
10 mA
3 A
1 A
2 A
OUTPUT VOLTAGE (V)
SUPPLY VOLTAGE (V)
3.0
2.5
2.0
1.5
1.0
0.5
0.0
1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3
Figure 7. Dropout Characteristics
10 mA
3 A
1 A
2 A
TEMPERATURE (C)
VOUTnom = 2.5 VVOUTnom = 1.24 V
+125C
+25C
−40C
450 3 A
1 A
2 A
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TYPICAL CHARACTERISTICS
TJ = 25C if not otherwise noted
GROUND CURRENT (mA)
OUTPUT CURRENT (A)
0
10
20
30
40
50
60
0 0.5 1 1.5 2 2.5 3
Figure 8. Ground Current vs. Output Current
VIN = 1.8 V
VOUT = 1.24 V
GROUND CURRENT (mA)
SUPPLY VOLTAGE (V)
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Figure 9. Ground Current vs. Supply Voltage
10 mA
GROUND CURRENT (mA)
SUPPLY VOLTAGE (V)
0
20
40
60
80
100
120
3 A
1 A
2 A
Figure 10. Ground Current vs. Supply Voltage
2.5
GROUND CURRENT (mA)
SUPPLY VOLTAGE (V)
Figure 11. Ground Current vs. Supply Voltage
10 mA
1.4
1.2
1
0.8
0.6
0.4
0.2
0
2
1.5
1
0.5
0
GROUND CURRENT (mA)
SUPPLY VOLTAGE (V)
0
20
40
60
80
100
120
140
012345
Figure 12. Ground Current vs. Supply Voltage
3 A
1 A
2 A
GROUND CURRENT (mA)
Figure 13. Ground Current vs. Temperature
1.4
1.2
1
0.8
0.6
0.4
0.2
0
−50 −30 −10 10 30 50 70 90 110 130
TEMPERATURE (C)
VIN = 3.5 V
VOUT = 2.5 V,
IOUT = 10 mA
VOUTnom = 2.5 V
VOUTnom = 2.5 VVOUTnom = 1.24 V
VOUTnom = 1.24 V
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 50 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
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TYPICAL CHARACTERISTICS
TJ = 25C if not otherwise noted
GROUND CURRENT (
m
A)
0
5
10
15
20
25
30
35
40
Figure 14. Ground Current vs. Temperature
−50 −30 −10 10 30 50 70 90 110 130
TEMPERATURE (C)
VIN = 3.5 V
VOUT = 2.5 V,
IOUT = 1.5 A
GROUND CURRENT (mA)
0
10
20
30
40
50
60
70
80
90
−50 −30 −10 10 30 50 70 90 110 13
0
Figure 15. Ground Current vs. Temperature
TEMPERATURE (C)
VIN = 3.5 V
VOUT = 2.5 V,
IOUT = 3 A
OUTPUT VOLTAGE (V)
2.6
−50 −30 −10 10 30 50 70 90 110 130
2.55
2.5
2.45
2.4
Figure 16. Output Voltage vs. Temperature
TEMPERATURE (C)
VOUTNOM = 2.5 V
IOUT = 10 mA
0
2
4
6
8
10
12
14
16
18
20
22
Figure 17. Enable Pin Input Current vs.
Temperature
TEMPERATURE (C)
−50 −30 −10 10 30 50 70 90 110 13
0
ENABLE CURRENT (mA)
VEN = 6.5 V
VEN = 1.4 V
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FUNCTIONAL CHARACTERISTICS
Figure 18. Load Transient Response
Figure 19. Line Transient Response
Figure 20. Enable Transient Response
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APPLICATIONS INFORMATION
Output Capacitor and Stability
The NCP57302 device requires an output capacitor for
stable operation. The NCP57302 is designed to operate with
ceramic output capacitors. The recommended output
capacitance value is 47 mF or greater. Such capacitors help
to improve transient response and noise reduction at high
frequency.
Input Capacitor
An input capacitor of 1.0 mF or greater is recommended
when the device is more than 4 inches away from the bulk
supply capacitance, or when the supply is a battery. Small,
surface−mount chip capacitors can be used for the
bypassing. The capacitor should be place within 1 inch of
the device for optimal performance. Larger values will help
to improve ripple rejection by bypassing the input of the
regulator, further improving the integrity of the output
voltage.
Minimum Load Current
The NCP57302 regulator is specified between finite
loads. A 10 mA minimum load current is necessary for
proper operation.
Enable Input
NCP57302 regulators also feature an enable input for
on/off control of the device. It’s shutdown state draws “zero”
current from input voltage supply (only microamperes of
leakage). The enable input is TTL/CMOS compatible for
simple logic interface, but can be connected up to VIN.
Overcurrent and Reverse Output Current Protection
The NCP57302 regulator is fully protected from damage
due to output current overload and output short conditions.
When NCP57302 output is overloaded, Output Current
limiting is provided. This limiting is linear; output current
during overload or output short conditions is constant. These
features are advantageous for powering FPGAs and other
ICs having current consumption higher than nominal during
their startup.
Thermal shutdown disables the NCP57302 device when
the die temperature exceeds the maximum safe operating
temperature.
When NCP57302 is disabled and (VOUT – VIN) voltage
difference is less than 6.5 V in the application, the output
structure of these regulators is able to withstand output
voltage (backup battery as example) to be applied without
reverse current flow.
Adjustable Voltage Design
The NCP/NCV57302 Adjustable voltage Device Output
voltage is set by the ratio of two external resistors as shown
in Figure 21.
The device maintains the voltage at the ADJ pin at 1.24 V
referenced to ground. The current in R2 is then equal to
1.24 V / R2, and the current in R1 is the current in R2 plus
the ADJ pin bias current. The ADJ pin bias current flows
from VOUT through R1 into the ADJ pin.
Figure 21. Adjustable Voltage Operation
VOUT +1.24 V @ǒ1)R1
R2Ǔ)IADJ @R1
+ +
VIN
EN
VOUT
ADJ
GND
NCP57302
R1
R2
VOUT
VIN
CIN COUT
47 mF,
Ceramic
For the R2 resistor value up to 15 kW the IADJ current
impact can be neglected and the R1 resistor value can be
calculated y:
R1 +R2 ǒVOUT
1.24 *1Ǔ(eq. 1)
Where VOUT is the desired nominal output voltage.
Thermal Considerations
The power handling capability of the device is limited by
the maximum rated junction temperature (125C). The PD
total power dissipated by the device has two components,
Input to output voltage differential multiplied by Output
current and Input voltage multiplied by GND pin current.
PD+ǒVIN *VOUTǓ@IOUT )VIN @IGND (eq. 2)
The GND pin current value can be found in Electrical
Characteristics table and in Typical Characteristics graphs.
The Junction temperature TJ is
TJ+TA)PD@RqJA (eq. 3)
where TA is ambient temperature and RqJA is the Junction to
Ambient Thermal Resistance of the NCP/NCV57302
device mounted on the specific PCB.
To maximize efficiency of the application and minimize
thermal power dissipation of the device it is convenient to
use the Input to output voltage differential as low as possible.
The static typical dropout characteristics for various
output voltage and output current can be found in the Typical
Characteristics graphs.
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ORDERING INFORMATION
Device
Output
Current
Output
Voltage Junction Temp. Range Package Shipping†
NCP57302DSADJR4G 3.0 A ADJ −40C to +125C D2PAK−5
(Pb−Free)
800 / Tape & Reel
NCV57302DSADJR4G* 3.0 A ADJ −40C to +125C D2PAK−5
(Pb−Free)
800 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP
Capable.
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PACKAGE DIMENSIONS
5 REF
A
123
K
B
S
H
D
G
C
E
ML
P
N
R
V
U
TERMINAL 6
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. TAB CONTOUR OPTIONAL WITHIN DIMENSIONS A
AND K.
4. DIMENSIONS U AND V ESTABLISH A MINIMUM
MOUNTING SURFACE FOR TERMINAL 6.
5. DIMENSIONS A AND B DO NOT INCLUDE MOLD
FLASH OR GATE PROTRUSIONS. MOLD FLASH
AND GATE PROTRUSIONS NOT TO EXCEED 0.025
(0.635) MAXIMUM.
DIM
A
MIN MAX MIN MAX
MILLIMETERS
0.386 0.403 9.804 10.236
INCHES
B0.356 0.368 9.042 9.347
C0.170 0.180 4.318 4.572
D0.026 0.036 0.660 0.914
E0.045 0.055 1.143 1.397
G0.067 BSC 1.702 BSC
H0.539 0.579 13.691 14.707
K0.050 REF 1.270 REF
L0.000 0.010 0.000 0.254
M0.088 0.102 2.235 2.591
N0.018 0.026 0.457 0.660
P0.058 0.078 1.473 1.981
R5 REF
S0.116 REF 2.946 REF
U0.200 MIN 5.080 MIN
V0.250 MIN 6.350 MIN
__
45
M
0.010 (0.254) T
−T−
OPTIONAL
CHAMFER
8.38
0.33
1.016
0.04
16.02
0.63
10.66
0.42
3.05
0.12
1.702
0.067
5−LEAD D2PAK
SCALE 3:1 ǒmm
inchesǓ
D
2
PAK 5
CASE 936A−02
ISSUE C
SOLDERING FOOTPRINT
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Phone: 81−3−5817−1050
NCP57302/D
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