© Semiconductor Components Industries, LLC, 2009
July, 2009 − Rev. 8
1 Publication Order Number:
NCP3064/D
NCP3064, NCP3064B,
NCV3064
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 1.5% 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
Figure 1. Typical Buck Application Circuit
Ç
Ç
Ç
Ç
Ç
Ç
Ç
Ç
ON/OFF
Ipk
FB
SWC
SWE
CT
GND
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
V
CC
ON/OFF
V
CC
GND
R
2
C
IN
C
T
R
1
GND
V
OUT
L
1
R
sense
D
1
NCP3064
PDIP−8
P, P1 SUFFIX
CASE 626
http://onsemi.com
MARKING
DIAGRAMS
DFN8
MN SUFFIX
CASE 488AF
SOIC−8
D SUFFIX
CASE 751
1
8
NCP3064x
AWL
YYWWG
NCP3064 = Specific Device Code
x=B
A = Assembly Location
L, WL = Wafer Lot
Y, YY = Year
W, WW = Work Week
G or G = Pb−Free Package
(Note: Microdot may be in either location)
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
ORDERING INFORMATION
3064x
ALYWG
G
1
1
8
NCV
3064
ALYWG
G
V3064
ALYWG
G
1
NCV3064
AWL
YYWWG
NCP
3064x
ALYWG
G
1
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