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參數(shù)資料
| 型號： | NCP1231P65G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Low−Standby Power High Performance PWM Controller |
| 中文描述： | 1 A SWITCHING CONTROLLER, 69 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | LEAD FREE, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 1/21頁 |
| 文件大?。?/td> | 500K |
| 代理商： | NCP1231P65G |
Semiconductor Components Industries, LLC, 2006
July, 2006
Rev. 4
1
Publication Order Number:
NCP1231/D
NCP1231
LowStandby Power High
Performance PWM
Controller
The NCP1231 represents a major leap towards achieving low
standby power in medium
to
high power Switched
Mode Power
Supplies such as notebook adapters, off
line battery chargers and
consumer electronics equipment. Housed in SOIC
8 or PDIP
8, the
NCP1231 contains all needed control functionality to build a rugged
and efficient power supply. Among the unique features offered by the
NCP1231 is an event management scheme that can disable the
front
end PFC circuit during standby, thus reducing the no load power
consumption. The NCP1231 itself goes into cycle skipping at light
loads while limiting peak current (to 25% of nominal peak) so that no
acoustic noise is generated and while in the skip cycle mode.
The NCP1231 also features an internal latching function that can be
used for Overvoltage Protection (OVP). The latch is triggered when
the voltage on Pin 8 rises above 4.0 V. During an OVP condition, the
output drive pulses are immediately stopped and the NCP1231 stays in
the latched off condition until V
CC
drops below 4.0 V (V
CCreset
). In
addition, Pin 8 also serves as a Brown
Out input which provides the
necessary safety feature when the SMPS faces low mains situations.
Features
Current
Mode Operation with Internal Ramp Compensation
Extremely Low Startup Current
of 30 A Typical
Skip
Cycle Capability at Low Peak Currents
Adjustable Soft
Start
Overvoltage
and
Brown
Out Protection
Short
Circuit Protection Independent of Auxiliary Level
Internal Frequency Dithering for Improved EMI Signature
Go
To
Standby Signal for PFC Front Stage
Extremely Low No
Load, Noiseless, Standby Power
Internal Leading Edge Blanking
+500 mA/
800 mA Peak Current Drive Capability
Available in Three Frequency Options: 65 kHz, 100 kHz, and 133 kHz
Direct Optocoupler Connection
SPICE Models Available for TRANsient and AC Analysis
Pb
Free Packages are Available
Typical Applications
High Power AC
DC Adapters for Notebooks, etc.
Offline Battery Chargers
Set
Top Boxes Power Supplies, TV, Monitors, etc.
http://onsemi.com
SOIC
8
D SUFFIX
CASE 751
PDIP
8
P SUFFIX
CASE 626
PIN CONNECTIONS
DRV
GND
1
8
V
CC
CS
FB
BO/OVP
SS
PFC_V
CC
MARKING
DIAGRAMS
231Dxy
= Device Code
x = 1 or 6
y = 0 or 3
1231Pzz = Device Code
zz = 65, 100 or 133
A
= Assembly Location
L, WL
= Wafer Lot
Y, YY
= Year
W, WW
= Work Week
or G
= Pb
Free Package
1
1
1231Pzz
AWL
YYWWG
1
231Dx
y
ALYW
1
8
See detailed ordering and shipping information in the package
dimensions section on page 19 of this data sheet.
ORDERING INFORMATION
8
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