Datasheet > NCP1337_11

NCP1337_11

更新时间： 2024-11-30 12:24:59

品牌	Logo	应用领域
安森美 - ONSEMI		控制器
页数	文件大小	规格书
15页	196K
描述
PWM Current-Mode Controller for Free Running Quasi-Resonant Operation

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NCP1337_11 数据手册

NCP1337

PWM Current-Mode

Controller for Free Running

Quasi-Resonant Operation

The NCP1337 combines a true current mode modulator and a

demagnetization detector which ensures full Borderline/Critical

Conduction Mode in any load/line conditions together with

minimum drain voltage switching (Quasi−Resonant operation). The

transformer core reset detection is done internally, without using any

external signal, due to the Soxyless concept. The frequency is

internally limited to 130 kHz, preventing the controller to operate

above the 150 kHz CISPR−22 EMI starting limit.

http://onsemi.com

MARKING

DIAGRAM

By monitoring the feedback pin activity, the controller enters skip

mode as soon as the power demand falls below a predetermined

level. As each restart is softened by an internal Soft−Skipt, and as

the frequency cannot go below 25 kHz, no audible noise can be

heard.

NCP1337P

AWL

YYWWG

PDIP−7

P SUFFIX

CASE 626B

The NCP1337 also features an efficient protective circuitry which,

in presence of an overcurrent condition, disables the output pulses

and enters a safe burst mode, trying to restart. Once the default has

gone, the device auto−recovers. Also included is a bulk voltage

monitoring function (known as brown−out protection), an adjustable

P1337

ALYWG

SOIC−7

D SUFFIX

CASE 751U

overpower compensation, and a V

OVP. The controller

immediately restarts after any of these conditions, unless the fault

timer has timed out. Finally, an internal 4.0 ms soft−start eliminates

the traditional startup stress.

= Assembly Location

WL, L = Wafer Lot

YY, Y = Year

WW, W = Work Week

Features

G, G

= Pb−Free Package

• Free−Running Borderline/Critical Mode Quasi−Resonant Operation

• Current−Mode

(Note: Microdot may be in either location)

• Soft−Skip Mode with Minimum Switching Frequency for Standby

PIN CONNECTIONS

• Auto−Recovery Short−Circuit Protection Independent of Auxiliary

Voltage

• Overvoltage Protection

• Brown−Out Protection

VCC

DRV

• Two Externally Triggerable Fault Comparators (one for a disable

function, and the other for a permanent latch)

• Internal 4.0 ms Soft−Start

GND

(Top View)

• 500 mA Peak Current Drive Sink Capability

• 130 kHz Max Frequency

ORDERING INFORMATION

• Internal Leading Edge Blanking

Device

Package

Shipping†

• Internal Temperature Shutdown

• Direct Optocoupler Connection

NCP1337PG

PDIP−7

50 Units/Rail

(Pb−Free)

• Dynamic Self−Supply with Levels of 12 V (On) and 10 V (Off)

• SPICE Models Available for TRANsient and AC Analysis

• These are Pb−Free Devices*

NCP1337DR2G

SOIC−7

2500 Tape & Reel

(Pb−Free)

Typical Applications

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

• AC−DC Adapters for Notebooks, etc.

• Offline Battery Chargers

• Consumer Electronics (DVD Players, Set−Top Boxes, TVs, etc.)

• Auxiliary Power Supplies (USB, Appliances, TVs, etc.)

*For additional information on our Pb−Free strategy and soldering details, please

downloadthe ON Semiconductor Soldering and Mounting Techniques Reference

Manual, SOLDERRM/D.

Semiconductor Components Industries, LLC, 2011

Publication Order Number:

May, 2011 − Rev. 5

NCP1337/D

12 3 4 5 6 7...15

中文翻译

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与NCP1337_11相关器件

型号	品牌	获取价格	描述	数据表
NCP1337DR2G	ONSEMI	获取价格	PWM Current−Mode Controller for Free Running Quasi−Resonant Operation
NCP1337PG	ONSEMI	获取价格	PWM Current−Mode Controller for Free Running Quasi−Resonant Operation
NCP1338	ONSEMI	获取价格	PWM Current-Mode Controller for Free Running Quasi-Resonant Operation
NCP1338DR2G	ONSEMI	获取价格	PWM Current-Mode Controller for Free Running Quasi-Resonant Operation
NCP1338PG	ONSEMI	获取价格	PWM Current-Mode Controller for Free Running Quasi-Resonant Operation
NCP1339	ONSEMI	获取价格	High-Voltage, Quasi-Resonant Controller featuring Valley Lock-Out
NCP1339_16	ONSEMI	获取价格	High-Voltage, QuasiResonant Controller featuring Valley Lock-Out and Power Saving Mode
NCP1339CDR2G	ONSEMI	获取价格	High-Voltage, QuasiResonant Controller featuring Valley Lock-Out and Power Saving Mode
NCP1339DDR2G	ONSEMI	获取价格	High-Voltage, QuasiResonant Controller featuring Valley Lock-Out and Power Saving Mode
NCP1339EDR2G	ONSEMI	获取价格	High-Voltage, QuasiResonant Controller featuring Valley Lock-Out and Power Saving Mode

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