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參數(shù)資料
| 型號(hào)： | NCP1203P60G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | PWM Current−Mode Controller for Universal Off−Line Supplies Featuring Standby and Short Circuit Protection |
| 中文描述： | 0.25 A SWITCHING CONTROLLER, 73 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | LEAD FREE, PLASTIC, DIP-8 |
| 文件頁(yè)數(shù)： | 1/15頁(yè) |
| 文件大?。?/td> | 217K |
| 代理商： | NCP1203P60G |
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Semiconductor Components Industries, LLC, 2005
October, 2005 Rev. 7
1
Publication Order Number:
NCP1203/D
NCP1203
PWM CurrentMode
Controller for Universal
OffLine Supplies Featuring
Standby and Short Circuit
Protection
Housed in SOIC8 or PDIP8 package, the NCP1203 represents a
major leap toward ultracompact Switchmode Power Supplies and
represents an excellent candidate to replace the UC384X devices. Due
to its proprietary SMARTMOS Very High Voltage Technology, the
circuit allows the implementation of complete offline ACDC
adapters, battery charger and a highpower SMPS with few external
components.
With an internal structure operating at a fixed 40 kHz, 60 kHz or
100 kHz switching frequency, the controller features a highvoltage
startup FET which ensures a clean and lossless startup sequence. Its
currentmode control naturally provides good audiosusceptibility
and inherent pulsebypulse control.
When the current setpoint falls below a given value, e.g. the output
power demand diminishes, the IC automatically enters the socalled
skip cycle mode and provides improved efficiency at light loads
while offering excellent performance in standby conditions. Because
this occurs at a user adjustable low peak current, no acoustic noise
takes place.
The NCP1203 also includes an efficient protective circuitry which,
in presence of an output over load condition, disables the output
pulses while the device enters a safe burst mode, trying to restart.
Once the default has gone, the device autorecovers. Finally, a
temperature shutdown with hysteresis helps building safe and robust
power supplies.
Features
HighVoltage Startup Current Source
AutoRecovery Internal Output ShortCircuit Protection
Extremely Low NoLoad Standby Power
CurrentMode with Adjustable SkipCycle Capability
Internal Leading Edge Blanking
250 mA Peak Current Capability
Internally Fixed Frequency at 40 kHz, 60 kHz and 100 kHz
Direct Optocoupler Connection
Undervoltage Lockout at 7.8 V Typical
SPICE Models Available for TRANsient and AC Analysis
Pin to Pin Compatible with NCP1200
PbFree Packages are Available
Applications
ACDC Adapters for Notebooks, etc.
Offline Battery Chargers
Auxiliary Power Supplies (USB, Appliances, TVs, etc.)
MARKING
DIAGRAM
x
A
L
Y
W
= 4, 6, or 1
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbFree Package
http://onsemi.com
SOIC8
D1, D2 SUFFIX
CASE 751
1
8
1
8
1203Pxx
AWL
YYWWG
1
8
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
ORDERING INFORMATION
PIN CONNECTIONS
1
Adj
8 HV
2
FB
3
CS
4
GND
7 NC
6 V
CC
5 Drv
(Top View)
203Dx
ALYW
1
8
xx
A
WL
YY
WW
G
= 40, 60, or 100
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbFree Package
PDIP8
N SUFFIX
CASE 626
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| NCP1205DR2G | 功能描述:電流型 PWM 控制器 Single Ended Quasi Resonant PWM RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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