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PDF NCV565 Data sheet ( Hoja de datos )
| Número de pieza | NCV565 | |
| Descripción | Low Dropout Linear Regulator | |
| Fabricantes | ON Semiconductor | |
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NCP565/NCV565
1.5 A Low Dropout
Linear Regulator
The NCP565/NCV565 low dropout linear regulator will provide
1.5 A at a fixed output voltage or an adjustable voltage down to 0.9 V.
The fast loop response and low dropout voltage make this regulator
ideal for applications where low voltage and good load transient
response are important. Device protection includes current limit, short
circuit protection, and thermal shutdown.
Features
• Ultra Fast Transient Response (t1.0 ms)
• Low Ground Current (1.1 mA @ Iload = 1.5 A)
• Low Dropout Voltage (0.9 V @ Iload = 1.5 A)
• Low Noise (28 mVrms)
• 0.9 V Reference Voltage
• Adjustable Output Voltage from 7.7 V down to 0.9 V
• 1.2 V Fixed Output Version. Other Fixed Voltages Available on
Request
• Current Limit Protection (3.5 A Typ)
• Thermal Shutdown Protection (160°C)
• Pb−Free Packages are Available
Typical Applications
• Servers
• ASIC Power Supplies
• Post Regulation for Power Supplies
• Constant Current Source
www.DataSheet4U.com
© Semiconductor Components Industries, LLC, 2007
February, 2007 − Rev. 12
1
http://onsemi.com
MARKING
DIAGRAMS
1
23
D2PAK
CASE 936
FIXED
Tab = Ground
Pin 1. Vin
2. Ground
3. Vout
NC
P565D2Txx
AWLYWWG
1
5
D2PAK
CASE 936A
ADJUSTABLE
NC
y565D2T
AWLYWWG
Tab = Ground
Pin 1. N.C.
2. Vin
3. Ground
4. Vout
5. Adj
xx = 12 or 33
y = P or V
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free
DFN6
CASE 506AX
1
xx = Voltage Rating
AJ = Adjustible
12 = 1.2 V
33 = 3.3 V
P565
MNxx
AYWWG
G
SOT−223
CASE 318E
AYM
565yy G
G
1
yy = Voltage Rating
12 = 1.2 V
A = Assembly Location
Y = Year
WW = Work Week
M = Date Code
G = Pb−Free Package
Tab = Vout
Pin 1. Ground
2. Vout
3. Vin
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 12 of this data sheet.
Publication Order Number:
NCP565/D
1 page  
NCP565/NCV565
TYPICAL CHARACTERISTICS
0.9005
0.9000
0.8995
0.8990
0.8985
0.8980
0.8975
Vin = 2.5 V
Vout = 0.9 V
Cin = Cout = 150 mF
0.8970−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 3. Output Voltage vs. Temperature
3.302
3.300
3.298
3.296
3.294
3.292
3.290
Vin = 4.9 V
Vout = 3.3 V
Cin = Cout = 150 mF
3.288
−50 −25
0
25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 4. Output Voltage vs. Temperature
3.90
3.85
3.80
3.75
3.70
3.65
3.60
3.55
3.50
3.45
Vin = 2.5 V
Vout = 0.9 V
Cin = Cout = 150 mF
3.40
3.35
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 5. Short Circuit Current Limit
vs. Temperature
1.16
1.14
1.12
1.10
1.08
1.06
1.04
1.02
1.00
Vin = 2.5 V
Vout = 0.9 V
Iout = 1.5 A
Cin = Cout = 150 mF
0.98
0.96
−50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 7. Ground Current vs. Temperature
1.2
1.0 Iout = 1.5 A
0.8
0.6 Iout = 50 mA
0.4
Cin = Cout = 150 mF
0.2
0
−50 −25
0
25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (°C)
Figure 6. Dropout Voltage vs. Temperature
1.28
1.26
1.24
1.22
1.2
1.18
1.16
1.14
1.12
0
300
600
900
1200
1500
Iout, OUTPUT CURRENT (mA)
Figure 8. Ground Current vs. Output Current
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5
5 Page 
NCP565/NCV565
Protection Diodes
When large external capacitors are used with a linear
regulator it is sometimes necessary to add protection diodes.
If the input voltage of the regulator gets shorted, the output
capacitor will discharge into the output of the regulator. The
discharge current depends on the value of the capacitor, the
output voltage and the rate at which Vin drops. In the
NCP565 linear regulator, the discharge path is through a
large junction and protection diodes are not usually needed.
If the regulator is used with large values of output
capacitance and the input voltage is instantaneously shorted
to ground, damage can occur. In this case, a diode connected
as shown in Figure 23 is recommended.
Vin
C1
1N4002 (Optional)
Vin Vout
NCP565
GND Adj
CAdj
R1
Vout
C2
R2
Figure 23. Protection Diode for Large
Output Capacitors
Thermal Considerations
This series contains an internal thermal limiting circuit
that is designed to protect the regulator in the event that the
maximum junction temperature is exceeded. This feature
provides protection from a catastrophic device failure due to
accidental overheating. It is not intended to be used as a
substitute for proper heat sinking. The maximum device
power dissipation can be calculated by:
PD
+
TJ(max) *
RqJA
TA
200
180
160
140
120
100
80
60
40
0
DFN 1 oz Cu
DFN 2 oz Cu
SOT−223 1 oz Cu
SOT−223 2 oz Cu
D2PAK 1 oz Cu
D2PAK 2 oz Cu
50 100 150 200 250 300 350 400 450 500
COPPER HEAT−SPREADER AREA (mm sq)
Figure 24. Thermal Resistance
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11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet NCV565.PDF ] | |
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