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19 Jul 2001 ... UC3844 and UC3845. EFFECTIVE DATE: 20-Jan-2002. AFFECTED CHANGE CATEGORY: On Semiconductor Fab Site. AFFECTED PRODUCT DIVISION: Analog ...

http://www.onsemi.com/pub_link/Collateral/UC3844-D.PDF

UC3842 and UC3844 have UVLO thresholds of 16V (on) and 10V (off). The UC3843 and UC3845 are ... The UC3844 and UC3845 can operate with 50% duty cycle. ...

http://www.datasheetcatalog.org/datasheet/fairchild/UC3842D1.pdf

The UC3844, UC3845 series are high performance fixed frequency current mode controllers. ..... The UC3844, UC3845 operate as a current mode ...

http://www.datasheetcatalog.org/datasheet2/c/0geroswu9h97gp9ky15gjwjwgswy.pdf

UC3842 and UC3844 have UVLO thresholds of 16V (on) and 10V (off). The UC3843 and UC3845 .... UC3842/UC3843/UC3844/UC3845. 5. Figure 2. Under Voltage Lockout ...

http://www.fairchildsemi.com/ds/UC/UC3842.pdf

UC3844 have UVLO thresholds of 16V (on) and 10V (off) .... UC3842/UC3843/UC3844/UC3845. 5. Figure 2. Under Voltage Lockout. During Under-Voltage Lock-Out, ...

http://www.iele.polsl.pl/elenota/Fairchild/uc3844.pdf

The UC3844, UC3845 series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line ...

http://sigma.octopart.com/76943/datasheet/ON-Semiconductor-UC3845N.pdf

The UTC UC3844/3845 are high performance fixed frequency ... The differences between UC3844 and UC3845 are the maximum duty cycle ranges and under-voltage ...

http://www.utc-ic.com/spec/UC3844_45.pdf

zero to < 50 % is obtained by the UC3844 and. UC3845 by the additionof an .... Output frequency is one half oscillator frequency for the UC3844 and UC3845. ...

http://www.gigatechnik.hu/pdf/UC3842.pdf

The UC3844 and UC3845 can operate with 50% duty cycle. .... UC3842/UC3843/UC3844/UC3845. 5. Figure 2. Under Voltage Lockout. During Under-Voltage Lock-Out, ...

http://www.ic-on-line.cn/IOL/datasheet/uc3842d1_1755.pdf

The UC3844 and UC3845 can operate with 50% duty cycle. ... ( ) IS 14SOP PINNO. * TOGGLE FLIP FLOP USED ONLY IN UC3844, UC3845. 深圳市诚鑫源电子有限公司 ...

/interstitial?url=http://www.cxyic.com/UpLoad/UpLoadImages/2008522112720.pdf

The UC3844 is designed as the isolated flyback converter and the LX1752 ... The isolated flyback converter uses the UC3844 current mode controller set to ...

http://www.microsemi.com/micnotes/2001.pdf

The UTC UC3844 and UTC UC3845 are high ... The UTC UC3844 has UVLO thresholds of 16V(on) and 10V(off), ideally suited for off-line converters. The ...

http://www.po-star.com/upPdf/uc3844-45.pdf

Order this document by UC3844/D. D SUFFIX. PLASTIC PACKAGE. CASE 751A. (SO–14). N SUFFIX ... The UC3844, UC3845 series are high performance fixed frequency ...

http://www.xainverter.com/data-center/电子元器件资料/uc3844-d.pdf

Page 1.

http://www.telemaster.ru/shema/UC3844.pdf

UC3844,45 UC2844,45. 5. 7. OP m$Á°Ë ¤. OP m$Á°Ë ¤. 8. OPðD °KL¤ .... UC3844,45 UC2844,45. 9 lmn. Ÿ'Ktslmn XY ]eyí\]'7^_ øª C9 D ^kŠ' " “3 CC ...

http://soft.laogu.com/download/uc3844.pdf

11 Mar 2005 ... maximum duty cycle of 96%, whereas the UC3844/5B have a maximum duty cycle of. 48%. 3.0 Model Description ...

http://www.aeng.com/articles/UC384x.pdf

Pin 2 (the feedback pin) of the UC3844 sums the current-sense signal, ... pin of the UC3844. The TL431 acts as an open-loop error amplifier with a 2.5V ...

http://www.edn.com/filtered/pdfs/contents/images/415109.pdf

UC1842/3/4/5. UC2842/3/4/5. UC3842/3/4/5. Current Mode PWM Controller. FEATURES. •. Optimized For Off-line And DC. To DC Converters ...

http://www.szhtic.com/xhytmp/pdf/UC1842.pdf

PWM IC, Unitrode part #UC3844. An auxiliary winding on the transformer is used to generate .... In Figure 3, the VREF pin of the UC3844 is used to bias the ...

http://www.supertex.com/pdf/datasheets/LR745.pdf

zero to < 50 % is obtained by the UC3844 and .... Output frequency is one half oscillator frequency for the UC3844 and UC3845. ...

http://www.rockby.com.au/DSheets/36545.pdf

In Figure 3, the VREF pin of the UC3844 is used to bias the ground pin of the LR7. ... 16V, the UC3844 will start to operate and VREF will increase from ...

http://www.premier-electric.com/files/supertex/pdf/LR745.pdf

zero to < 50 % is obtained by the UC3844 and .... Outputfrequency is one halfoscillator frequency for the UC3844 and UC3845. ...

http://www.all-electric.com/schematic/ds1/uc3843_ST-micro.pdf

The UC3844 and UC3845 can operate with 50% duty cycle. ... ( ) IS 14SOP PINNO. * TOGGLE FLIP FLOP USED ONLY IN UC3844, UC3845. Jameco Part Number 278926 ...

http://www.jameco.com/Jameco/Products/ProdDS/278926FSC.pdf

The UC3842/UC3843/UC3844/UC3845 are fixed fre- ... TheUC3842 and UC3844 have UVLO thresholds of 16V (on) and 10V (off) The ...

http://www.jameco.com/Jameco/Products/ProdDS/278926-DS05.pdf

The UC3844, UC3845 series are high performance fixed frequency current mode controllers. ...... The UC3844, UC3845 operate as a current mode ...

http://www.100y.com.tw/pdf_file/ON_UC3844.pdf

by the UC3844 and UC3845 by the addition of an internal .... Output frequency is one half oscillator frequency for the UC3844 and. UC3845. ...

http://www.myco.com.cn/ois/usersites/chuangrui/meta/1109058396421.pdf

for the Unitrode UC3844 PWM IC during start-up. The com- .... is connected to the VCC line of a PWM IC, Unitrode part #UC3844. ...

http://www.eet-china.com/ARTICLES/2002MAY/PDF/2002MAY07_ICD_AMD_POW_AN298.PDF?SOURCES=DOWNLOAD

multi-output fwd tran loadstep: an ATX multi-output 5 V / 15 A and 3.3 V / 15 A 2-SW converter with UC3844 forward active clamp: an active clamp forward ...

http://pagesperso-orange.fr/cbasso/Downloads/Book/Library file description OrCAD PSpice.pdf

multi-output forward 12V5V UC3844.dwg: multi-output forward 12V5V generic.dwg: a ... A UC3844 model configuration. This is a multi-sheet template: ...

http://pagesperso-orange.fr/cbasso/Downloads/Book/Library file description Intusoft IsSpice.pdf

1: A flyback power supply controlled by TI UC3844. Frequency Response Analysis ... UC3844, operating at the switching frequency of. 70 kHz. It takes just ...

http://www.powersimtech.com/manual/psim_flier.pdf

UC3844. MIC38C44/MIC38HC44. Improved Alternative. UC3845. MIC38C45/MIC38HC45. Improved Alternative. Notes: Direct cross parts are parametrically similar and ...

http://www.micrel.com/_PDF/other/partscross.pdf

UC3844. MIC38C44/MIC38HC44. Improved alternative. UC3845. MIC38C45/MIC38HC45. Improved alternative. Philips. Part Number. Direct Cross ...

http://www.micrel.com/_PDF/other/Combo-X-Ref.pdf

Dazu wird ein kleiner Flyback (UC3844) mit nachgeschaltetem Transistor ... erzeugt, die langt, den UC3844 gerade so eben anlaufen zu lassen. ...

http://newsgroups.derkeiler.com/pdf/Archive/De/de.sci.electronics/2008-01/msg03718.pdf

Separation of Regulation and Protection Circuits. UC3844 ... Second pair of sense leads. Open sense lead latent fail omitted. UC3844 ...

http://www-03.ibm.com/procurement/proweb.nsf/objectdocswebview/file15+-+ahladas+power+and+cooling+symposium+2005/$file/15+ahladas+power+and+cooling+symposium+2005.pdf

The control voltage for the UC3844 pulse width modulator is given by: ... strap winding W2 can feedback to power the UC3844 The snubber network D3, C4, ...

http://focus.ti.com/lit/an/slua147/slua147.pdf

UC3844. R5 150 kΩ ..... OTHER QUALIFIED VERSIONS OF UC1842, UC1843, UC1844, UC1845, UC3842, UC3843, UC3844, UC3845, UC3845AM : •Catalog: UC3842M, UC3845A ...

http://focus.ti.com/lit/ds/symlink/uc1844.pdf

for the Unitrode UC3844 PWM IC during start-up. The com- ..... pin on the UC3844 is used to bias the ground pin of the LR7. The V ...

http://www.eettaiwan.com/ARTICLES/2002MAY/PDF/2002MAY07_ICD_AMD_POW_AN298.PDF?SOURCES=DOWNLOAD

BLOCK DIAGRAM (toggle flip flop used only in UC3844, UC3845). Absolute Maximum Ratings. Characteristic. Symbol. Value. Unit. Supply Voltage (low impedance ...

http://www.sm2vbk.com/~vbk/radio/projekt/datablad/uc3842b.pdf

The UC3844, UC3845 series are high performance fixed frequency current mode controllers. ..... 0°C for UC3844, UC3845. T high. = +70°C for UC3844, UC3845 ...

http://cn.100y.com.tw/pdf_file/ON_UC3844.pdf

The UC3844 and UC3845 have an internal divide-by-two flip-flop driven by the oscillator ..... regulator controlled with the UC3844. This regulator is low ...

http://www.dea.icai.upco.es/pablo/slua143.pdf

The UC3842 and UC3844 have. UVLO thresholds of 16V (on) and 10V (off), .... Output frequency is one half oscillator frequency for the UC3844 and UC3845. ...

http://www.rem-tv.odessa.ua/datasheets/smps/UC3842.PDF

compensation pin of U1, the UC3844 current-mode controller chip. .... Figure 2 shows more detail of the internal connections within the UC3844 control chip. ...

http://www.venable.biz/tp-18.pdf

output of the operational amplifier (op-amp), which is the compensation pin of U1, the UC3844 current-mode controller chip. Transistors Q1 and Q2 turn off ...

http://www.venable.biz/tp-17.pdf

UC3844. D. G. S. Q1. 07N60C3. A. K. D8. 1N4148. R26. 56R 1/4w. R21. 100K 1/8W. A. K. D11. 4.7V DO35. R30. 0.1R 2W. C26. 1000pF/50V. R28 10R 1W .... UC3844 ...

http://www.dianyuan.com/bbs/u/48/1165737577.pdf

maximum duty cycle of 96%, whereas the UC3844/5B have a maximum duty cycle of. 48%. 3.0 Model Description. The control circuit was decomposed into elemental ...

http://www.ema-eda.com/products/other/articles/UC384x.pdf

的主回路上串电阻采样作为电流反馈信号，功率变换管的驱动脉冲由UC3844 等 ... 波形的脉宽也是有宽有窄，占空比达到了47%，而UC3844 的最大占空比仅为50%，如果增加 ...

http://www.symcukf.com/DataSheet/005/004/29.pdf

Page 1. 沈阳单片机开发网——帮您精确掌握电子器件的使用细节 www.symcukf.com. UC3844 组成的60W 开关电源. 1.

http://www.symcukf.com/DataSheet/005/004/50.pdf

UC3844 A/B. BUL310PI. ISOWATT 220 STP5NA60FI. ISOWATT 220 UC3845 A/B. BUF405. TO-220. STP8NA50. TO-220. L4990/A. BUF405AXI. ISOWATT 221 STP8NA50FI ...

http://epublicsell.googlepages.com/4516.pdf

UC3844. U6. UC3844. PGND. DRIVE. PWR. R5 1.5K. C31. 1nF. C33. 10nF. PGND. R40. 2002R. R41. 1K. PGND. PGND. R39. 1K. CURRENT. C29. 100pF. PGND. C32. 150pF ...

http://www.wxcmc.com/pdres/200904/20090404182508819.pdf

UC3844. B3844. UC3845. B3845. Intersil. ICL7106. B7106. ICL7107. B7107. Int'l Rectifier. IRF510. IRF510. IRF520. IRF520 .... UC3844. B3844. UC3845. B3845 ...

http://matthieu.benoit.free.fr/cross/competitive/bay-linear/New Cross 2002 Web.pdf