參數(shù)資料
型號(hào)： NCP1055ST44T3G
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)壓器
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 2 A SWITCHING REGULATOR, 50 kHz SWITCHING FREQ-MAX, PDSO4
封裝： LEAD FREE, PLASTIC, TO-261, SOT-223, 4 PIN
文件頁(yè)數(shù)： 1/26頁(yè)
文件大小： 261K
代理商： NCP1055ST44T3G
Semiconductor Components Industries, LLC, 2006
February, 2006 Rev. 9
1
Publication Order Number:
NCP1050/D
NCP1050, NCP1051,
NCP1052, NCP1053,
NCP1054, NCP1055
Monolithic High Voltage
Gated Oscillator Power
Switching Regulator
The NCP1050 through NCP1055 are monolithic high voltage
regulators that enable end product equipment to be compliant with low
standby power requirements. This device series combines the required
converter functions allowing a simple and economical power system
solution for office automation, consumer, and industrial products.
These devices are designed to operate directly from a rectified AC line
source. In flyback converter applications they are capable of providing
an output power that ranges from 6.0 W to 40 W with a fixed AC input
of 100 V, 115 V, or 230 V, and 3.0 W to 20 W with a variable AC input
that ranges from 85 V to 265 V.
This device series features an active startup regulator circuit that
eliminates the need for an auxiliary bias winding on the converter
transformer, fault detector and a programmable timer for converter
overload protection, unique gated oscillator configuration for extremely
fast loop response with double pulse suppression, power switch current
limiting, input undervoltage lockout with hysteresis, thermal shutdown,
and auto restart fault detection. These devices are available in
economical 8pin dualinline and 4pin SOT223 packages.
Features
Startup Circuit Eliminates the Need for Transformer Auxiliary Bias
Winding
Optional Auxiliary Bias Winding Override for Lowest Standby
Power Applications
Converter Output Overload and Open Loop Protection
Auto Restart Fault Protection
IC Thermal Fault Protection
Unique, Dual Edge, Gated Oscillator Configuration for Extremely
Fast Loop Response
Oscillator Frequency Dithering with Controlled Slew Rate Driver for
Reduced EMI
Low Power Consumption Allowing European Blue Angel Compliance
OnChip 700 V Power Switch Circuit and Active Startup Circuit
Rectified AC Line Source Operation from 85 V to 265 V
Input Undervoltage Lockout with Hysteresis
Oscillator Frequency Options of 44 kHz, 100 kHz, 136 kHz
PbFree Packages are Available
Typical Applications
ACDC Converters
Wall Adapters
Portable Electronic Chargers
Low Power Standby and KeepAlive Supplies
PDIP8
P SUFFIX
CASE 626A
1
8
MARKING
DIAGRAMS
X
Z
= Current Limit (0, 1, 2, 3, 4, 5)
= Oscillator Frequency
A = 44 kHz, B = 100 kHz, C = 136 kHz
= Assembly Location
WL, L = Wafer Lot
YY, Y
= Year
WW, W= Work Week
G or
= PbFree Package
(Note: Microdot may be in either location)
A
1
8
Pin: 1.
V
CC
Control Input
2.
3, 78. Ground
4.
No Connection
5.
Power Switch Drain
NCP105XZ
AWL
YYWWG
See detailed ordering and shipping information on page 22 of
this data sheet.
ORDERING INFORMATION
http://onsemi.com
SOT223
ST SUFFIX
CASE 318E
Pin: 1.V
CC
2.Control Input
3.Power Switch Drain
4.Ground
1
AWW
N5XZ
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