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NCP3063 Datasheet PDF : 16 Pages
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NCP3063, NCP3063B,
NCV3063
1.5 A, Step−Up/Down/
Inverting Switching
Regulators
The NCP3063 Series is a higher frequency upgrade to the popular
MC34063A and MC33063A monolithic DC−DC converters. These
devices consist of an internal temperature compensated reference,
comparator, a controlled duty cycle oscillator with an active current
limit circuit, a driver and a high current output switch. This series was
specifically designed to be incorporated in Step−Down, Step−Up and
Voltage−Inverting applications with a minimum number of external
components.
Features
• Operation to 40 V Input
• Low Standby Current
• Output Switch Current to 1.5 A
• Output Voltage Adjustable
• Frequency Operation of 150 kHz
• Precision 1.5% Reference
• New Features: Internal Thermal Shutdown with Hysteresis
New Features: Cycle−by−Cycle Current Limiting
• Pb−Free Packages are Available
Applications
• Step−Down, Step−Up and Inverting supply applications
• High Power LED Lighting
• Battery Chargers
http://onsemi.com
MARKING
DIAGRAMS
8
1
SOIC−8
D SUFFIX
CASE 751
3063x
ALYW
G
1
V3063
ALYW
G
1
8
1
PDIP−8
P, P1 SUFFIX
CASE 626
NCP3063x
AWL
YYWWG
1
NCV3063
AWL
YYWWG
1
8
NCP3063
TSD
SET dominant
7
Rs
0.15 W
Vin
6
12 V +
22C0inmF
5
R
Q
S
COMPARATOR
−
+
S
Q
R
0.2 V
SET dominant
OSCILLATOR
CT
+ COMPARATOR
−
1.25 V
REFERENCE
REGULATOR
R1
2.4 kW
R2
3.9 kW
1
2
D
3
CT
2.2 nF
L
47 mH
4
Vout
3.3 V /
800 mA
470 mF +
Cout
Figure 1. Typical Buck Application Circuit
8
1
DFN−8
SUFFIX
CASE 488
3063y
ALYW G
NCP3063x = Specific Device Code
x=B
A
= Assembly Location
L, WL
= Wafer Lot
Y, YY
= Year
W, WW = Work Week
G
= 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 13 of this data sheet.
© Semiconductor Components Industries, LLC, 2006
1
November, 2006 − Rev. 1
Publication Order Number:
NCP3063/D
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