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PDF NCP630 Data sheet ( Hoja de datos )
| Número de pieza | NCP630 | |
| Descripción | Fast Linear Voltage Regulators | |
| Fabricantes | ON Semiconductor | |
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NCP630
3.0 A Fast Linear Voltage
Regulators
The NCP630 is a low dropout positive voltage regulator that is
capable of providing a guaranteed output current of 3.0 A with a
maximum dropout voltage of 1.25 V at 3.0 A over temperature. The
fast turn on time allows step changes in loads commonly found in low
voltage microprocessor applications. The NCP630 is currently offered
as an adjustable output version that can be programmed down to 1.2 V
with two external resistors and as a fixed output version at 3.47 V. On
chip trimming adjusts the reference/output voltage to within "1.5%
accuracy. Internal protection features consist of output current limiting
and thermal shutdown. NCP630 is available in D2PAK package.
Features
• Output Current of 3.0 A
• 1.25 V Maximum Dropout Voltage at 3.0 A Over Temperature
• Voltage on Shutdown Pin is TTL Compatible
• Reference/Output Voltage Trimmed to "1.5%
• Current Limit Protection
• Thermal Shutdown Protection
• −40°C to 125°C Junction Temperature Range
• Pb−Free Packages are Available
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Applications
• Microprocessor Power Supplies
• DSP Power Supplies
• SMPS Post Regulation
• Battery Chargers
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MARKING
DIAGRAM
1
5
D2PAK
D2T SUFFIX
CASE 936A
NC
P630xD2T
AWLYWWG
NCP630A
Tab = Ground
Pin 1. Shutdown
2. Vin
3. Ground
4. Vout
5. Adj
NCP630G
Tab = Ground
Pin 1. Shutdown
2. Vin
3. Ground
4. Vout
5. Sense
x = Specific Device Code
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
INPUT
Cin +
68 mF −
Vin Vout
Shutdown
NCP630A
ADJ
GND
ǒ ǓR2 + R1
Vout
1.216
*
1
+
R2
R1
10 kW
Vout
@3A
Co
33 mF
INPUT
Cin +
68 mF −
Vin Vout
Shutdown
NCP630G
SENSE
GND
Vout
+
@3A
Co
33 mF
Figure 1. Typical Application Circuit for NCP630A
Figure 2. Typical Application Circuit for NCP630G
© Semiconductor Components Industries, LLC, 2005
June, 2005 − Rev. 5
1
Publication Order Number:
NCP630/D
1 page  
NCP630
TYPICAL CHARACTERISTICS
3.480
3.475
3.470
3.465
3.460
3.455
3.450
−40 −20 0 20 40 60 80 100 120
TA, AMBIENT TEMPERATURE (°C)
Figure 3. Output Voltage versus Temperature
1.2
1 IOUT = 3.0 A
0.8
IOUT = 300 mA
0.6
0.4
0.2
0
−40 −20 0 20 40 60 80 100 120
TA, TEMPERATURE (°C)
Figure 5. Dropout Voltage versus Temperature
9
8
7
6
5
4
3
2
1
0
−40 −20 0 20 40 60 80 100 120
TA, AMBIENT TEMPERATURE (°C)
Figure 4. Short Circuit Current Limit versus
Temperature
1.8
1.6
VIN = VOUT + 1.5 V
VSD = VIN
1.4
1.2
1 IOUT = 3.0 A
0.8
0.6
0.4 IOUT = 300 mA
0.2
0
−40 −20 0 20 40 60 80 100 120
TA, AMBIENT TEMPERATURE (°C)
Figure 6. Ground Current versus Temperature
40
35
30
25
20
15
10
VIN = VOUT + 1.5 V
VSD = 0 V
5
0
−60 −40 −20 0 20 40 60 80 100 120 140
TA, AMBIENT TEMPERATURE (°C)
Figure 7. Ground Pin Current in Shutdown
Mode versus Temperature
4
3
COUT = 100 mF
RL = 3.5 W
2
1
0
3
2
1
0
0 20 40 60 80 100 120
TIME (ms)
Figure 8. Start−up Transient
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5
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| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet NCP630.PDF ] | |
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