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PDF NCP3064B Data sheet ( Hoja de datos )
| Número de pieza | NCP3064B | |
| Descripción | Step-Up/Down/ Inverting Switching Regulator | |
| Fabricantes | ON Semiconductor | |
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NCP3064, NCP3064B,
NCV3064
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1.5 A, Step-Up/Down/
Inverting Switching
Regulator with ON/OFF
Function
The NCP3064 Series is a higher frequency upgrade to the popular
MC33063A and MC34063A monolithic DC−DC converters. These
devices consist of an internal temperature compensated reference,
comparator, controlled duty cycle oscillator with an active current
limit circuit, driver and high current output switch. This series was
specifically designed to be incorporated in Step−Down and Step−Up
and Voltage−Inverting applications with a minimum number of
external components. The ON/OFF pin provides a low power
shutdown mode.
Features
• Input Voltage Range from 3.0 V to 40 V
• Logic Level Shutdown Capability
• Low Power Standby Mode, Typical 100 mA
• Output Switch Current to 1.5 A
• Adjustable Output Voltage Range
• 150 kHz Frequency Operation
• Precision 2% Reference
• Internal Thermal Shutdown Protection
• Cycle−by−Cycle Current Limiting
• NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
• These are Pb−Free Devices
Applications
• Step−Down, Step−Up and Inverting supply applications
• High Power LED Lighting
• Battery Chargers
ON/OFF
Rsense
VCC
CIN
Ç ÇÇON/OFF
SWC
Ç ÇÇIpk SWE
Ç ÇÇVCC
CT
Ç ÇÇFB GND
Ç ÇÇNCP3064
R2 CT
GND
L1
R1
D1
VOUT
GND
Figure 1. Typical Buck Application Circuit
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MARKING
DIAGRAMS
8
1
SOIC−8
D SUFFIX
CASE 751
3064x
ALYWG
G
1
V3064
ALYWG
G
1
8
1
PDIP−8
P, P1 SUFFIX
CASE 626
NCP3064x
AWL
YYWWG
NCV3064
AWL
YYWWG
8 DFN8
MN SUFFIX
1 CASE 488AF
NCP
3064x
ALYWG
G
NCV
3064
ALYWG
G
NCP3064
x
A
L, WL
Y, YY
W, WW
G or G
= Specific Device Code
=B
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
© Semiconductor Components Industries, LLC, 2008
November, 2008 − Rev. 4
1
Publication Order Number:
NCP3064/D
1 page  
NCP3064, NCP3064B, NCV3064
350
300
250
200
150
100
50
0
0 1 2 3 4 5 6 7 8 9 1011 12131415161718192021
CT, CAPACITANCE (nF)
Figure 5. Oscilator Frequency vs. Timing
Capacitor CT
150
CT = 2.2 nF
145 TJ = 25°C
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140
135
130
125
120
0
5 10 15 20 25 30 35
VCC, SUPPLY VOLTAGE (V)
Figure 6. Oscillator Frequency vs. Supply
Voltage
40
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
−40
1A
0.75 A
0.5 A
ICE = 0.25 A
−20 0 20 40
1.25 A
60 80
100 120 140
TJ, JUNCTION TEMPERATURE (°C)
Figure 7. Emitter Follower Configuration Output
Darlington Switch Voltage Drop vs. Temperature
1.3
1.2
0.75 A
1.1 1 A
1.0
0.9 0.5 A
0.8
0.7 ICE = 0.25 A
1.25 A
0.6
−40 −20 0
20 40 60 80 100 120 140
TJ, JUNCTION TEMPERATURE (°C)
Figure 8. Common Emmitter Configuration Outp
Darlington Switch Voltage Drop vs. Temperatur
1.29
1.27
1.25
1.23
1.21
1.19
−40 −20 0
20 40 60 80 100 120
TJ, JUNCTION TEMPERATURE (°C)
Figure 9. Comparator Threshold Voltage vs.
Temperature
140
1.6
1.5
1.4
1.3
1.2
1.1
1
−40 −20 0
20 40 60 80 100 120 140
TJ, JUNCTION TEMPERATURE (°C)
Figure 10. ON/OFF Comparator Threshold
Voltage vs. Temperature
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5
5 Page 
NCP3064, NCP3064B, NCV3064
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Figure 17. Buck Demoboard Layout
Figure 18. Buck Demoboard Photo
75
Vin = 10 V
70
Vin = 16 V
65
60
55
50
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2
OUTPUT CURRENT (A)
Figure 19. Efficiency vs. Output Current for
Buck Demoboard
Table 3. TEST RESULTS
Line Regulation
Load Regulation
Output Ripple
Efficiency
Vin = 9 V to 12 V, Vout = 3.3 V, Iout = 800 mA
Vin = 12 V, Vout = 3.3 V, Iout = 800 mA
Vin = 12 V, Vout = 3.3 V, Iout = 100 mA to 800 mA
Vin = 12 V, Vout = 3.3 V, Iout = 500 mA
8 mV
10 mV
< 85 mV Peak - Peak
70%
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11
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| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet NCP3064B.PDF ] | |
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