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Power Offline SMPS

The NCP101X series integrates a fixed鈭抐requency current鈭抦ode

controller and a 700 V MOSFET. Housed in a PDIP鈭?,

PDIP鈭? Gull Wing, or SOT鈭?23 package, the NCP101X offers

everything needed to build a rugged and low鈭抍ost power supply,

including soft鈭抯tart, frequency jittering, short鈭抍ircuit protection,

skip鈭抍ycle, a maximum peak current setpoint and a Dynamic

Self鈭扴upply (no need for an auxiliary winding).

Unlike other monolithic solutions, the NCP101X is quiet by nature:

during nominal load operation, the part switches at one of the available

frequencies (65 鈭?100 鈭?130 kHz). When the current setpoint falls

below a given value, e.g. the output power demand diminishes, the IC

automatically enters the so鈭抍alled skip鈭抍ycle mode and provides

excellent efficiency at light loads. Because this occurs at typically 1/4

of the maximum peak value, no acoustic noise takes place. As a result,

standby power is reduced to the minimum without acoustic noise

generation.

Short鈭抍ircuit detection takes place when the feedback signal fades

away, e.g. in true short鈭抍ircuit conditions or in broken Optocoupler

cases. External disabling is easily done either simply by pulling the

feedback pin down or latching it to ground through an inexpensive

SCR for complete latched鈭抩ff. Finally soft鈭抯tart and frequency

jittering further ease the designer task to quickly develop low鈭抍ost and

robust offline power supplies.

For improved standby performance, the connection of an auxiliary

winding stops the DSS operation and helps to consume less than

100 mW at high line. In this mode, a built鈭抜n latched overvoltage

protection prevents from lethal voltage runaways in case the

Optocoupler would brake. These devices are available in economical

8鈭抪in dual鈭抜n鈭抣ine and 4鈭抪in SOT鈭?23 packages.

Features

http://onsemi.com

MARKING DIAGRAMS

8

1

PDIP鈭?

CASE 626A

AP SUFFIX

1

PDIP鈭?

(Gull Wing)

CASE 626AA

APL SUFFIX

1

P101xAPyy

AWL

YYWW

1

101xAPLyy

AWL

YYWW

4

1

SOT鈭?23

CASE 318E

ST SUFFIX

1

101xy

ALYW

x

yy

y

= Current Limit (0, 1, 2, 3, 4)

= 06 (65 kHz), 10 (100 kHz), 13 (130 kHz)

= Oscillator Frequency

A (65 kHz), B (100 kHz), C (130 kHz)

A

= Assembly Location

WL, L = Wafer Lot

YY, Y = Year

WW, W = Work Week

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 22 of this data sheet.

鈥?/div>

Built鈭抜n 700 V MOSFET with Typical R

DSon

of 11

W

鈥?/div>

and 22

W

Large Creepage Distance Between High鈭扸oltage Pins

Current鈭扢ode Fixed Frequency Operation:

65 kHz 鈥?100 kHz 鈭?130 kHz

Skip鈭扖ycle Operation at Low Peak Currents Only:

No Acoustic Noise!

Dynamic Self鈭扴upply, No Need for an Auxiliary

Winding

Internal 1.0 ms Soft鈭扴tart

Latched Overvoltage Protection with Auxiliary

Winding Operation

Frequency Jittering for Better EMI Signature

鈥?/div>

Auto鈭扲ecovery Internal Output Short鈭扖ircuit

鈥?/div>

Protection

Below 100 mW Standby Power if Auxiliary Winding

is Used

Internal Temperature Shutdown

Direct Optocoupler Connection

SPICE Models Available for TRANsient Analysis

Pb鈭扚ree Packages are Available*

Typical Applications

鈥?/div>

Low Power AC/DC Adapters for Chargers

鈥?/div>

Auxiliary Power Supplies (USB, Appliances,

TVs, etc.)

*For additional information on our Pb鈭扚ree strategy and soldering details, please download the ON Semiconductor Soldering and Mounting

Techniques Reference Manual, SOLDERRM/D.

漏

Semiconductor Components Industries, LLC, 2004

1

September, 2004 鈭?Rev. 10

Publication Order Number:

NCP1010/D

標準包裝
4,000
類別
集成電路 (IC)
家庭
PMIC - AC-DC 轉(zhuǎn)換器，離線開關
系列
-
輸出隔離
隔離
頻率范圍
59kHz ~ 71kHz
輸入電壓
8.1 V ~ 10 V
輸出電壓
700V
功率（瓦特）
19W
工作溫度
-40°C ~ 125°C
封裝/外殼
TO-261-4，TO-261AA
供應商設備封裝
SOT-223
包裝
帶卷 (TR)

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