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LY9527 Dataheets PDF



Part Number LY9527
Manufacturers Strong Link Electronics
Logo Strong Link Electronics
Description Current mode PWM controller
Datasheet LY9527 DatasheetLY9527 Datasheet (PDF)

, Ko ng ,.L Shen Zhen Strong Link Electronics c( Ho LY9523/LY9525/LY9526/LY9527/LY9528 ng (H o GENERAL DESCRIPTION nic tro controller MOSFET. with integr ated hig h voltag e po wer gK ,.L t combines a dedicate d curre nt mode PW M on d. Co g) DIP8-300-2.54 LY952 3/LY 952 5/LY95 26/LY95 27 /LY9528 g) Co ,.L LY9523/LY9525/LY9526/LY9527/LY9528 Ko n td. Current mode PWM controller with integrated high voltage power MOSFET ec El design wit h LY952 3/ LY952 5/LY 952 6/LY95.

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, Ko ng ,.L Shen Zhen Strong Link Electronics c( Ho LY9523/LY9525/LY9526/LY9527/LY9528 ng (H o GENERAL DESCRIPTION nic tro controller MOSFET. with integr ated hig h voltag e po wer gK ,.L t combines a dedicate d curre nt mode PW M on d. Co g) DIP8-300-2.54 LY952 3/LY 952 5/LY95 26/LY95 27 /LY9528 g) Co ,.L LY9523/LY9525/LY9526/LY9527/LY9528 Ko n td. Current mode PWM controller with integrated high voltage power MOSFET ec El design wit h LY952 3/ LY952 5/LY 952 6/LY95 27/ LY95 28 . the IC operates in Extend ed gK on nic tro ‘burst mod e’ to minimize switching loss. Low er standb y po we r and hi gh er (H El ike Ma tro Soft Start with 4mS,LY9523/LY 9 525/LY9 52 6/LY952 7/ LY952 8 offers complete gK Excellent EMI perfor mance is achieve d wi th prop riet ary fre qu e ncy hufflin g echniqu e. nic on frequ ency is 65KHz. g) n DIP-8 LY952 3/L Y 952 5/LY95 26/LY95 27 /LY9528 o perat es in the fixed P WM freque ncy ,the ec conve rsion efficiency is thus achieved. Co on on ,.L nic g) 1/7 http://www.Datasheet4U.com Ma ik package. FEATURES z z z z z eE lec Integrate d high volta ge po wer MOSFET Low Vcc Startup Cu r rent( 5 μ A) tro o,. Ltd . Ma ik Frequ ency shuffling for EMI z z z z UVLO an d Auto Self- Recover y Soft Start with 4mS Burst Mode ,.L td. LY-DOC952X REV:2.1 www.maike-tech.com Feb..2011 on td. aik eE lec g) Co z OTP Maike Electronic (HK) Co,.Ltd. tro Cycle- by- Cycle Ove r-curr ent limiting Ma ik eE lec )C (H on Ove r curre nt Protection(O CP),o ver voltag e Protection(OVP) tro nic “No Y-CAP ”system design in sub 20 W ra nge (H gK on nic protection (OCP).L eE Y9 523/L Y9 52 5/L Y952 6/ LY952 7/L Y 952 8 is offered i (H clamp and unde r volt age lockou t (UVLO), ove r volta ge pr otection(O LP),o ver cur ren t lec protection cover age with autom atic self-reco ver y fea ture includ ing Vcc over volta ge Co on td. current co ntribute to a reliable pow er on startup (H Vcc low startup cur r ent and lo w ope ratin g on M Ma ike El ec g) Co Ma ike El ec ng )C o td . t , Ko ng ,.L Shen Zhen Strong Link Electronics LY9523/LY9525/LY9526/LY9527/LY9528 ng z z z Offline AC/DC Flyb a ck conve rter Battery Charger (H o Open -fram e SMPS g) Co ,.L z DVD/DVB/Set-Top B ox Power Supplies Ko n td. APPLICATIONS nic BLOCK DIAGRAM Vcc on gK ,.L t tro ec on 5V Internal Bias UVLO Vcc Clamp Co (H g) Q1 El Drain Q3 gK on R1 tro ___ Q2 ec R (H El D2 ike nic + on LEB Soft Start Green Mode Burst Mode - Vth Slope Compensation PWM Compensation OCP Ma R2 tro gK g) Sense Gnd Co nic (H on eE lec aik tro 2/7 on FB Q ,.L nic gK on g) Frequency Jitter nic D1 OSC S Q Driver lec OLP R3 + - eE Ma ik o,. Ltd . Ma ik eE lec PIN CONNECTION tro nic tro (H on Delay 68mS ,.L td. g) Co Maike Electronic (HK) Co,.Ltd. LY-DOC952X REV:2.1 Feb..2011 www.maike-tech.com on td. Ma ik eE lec )C (H on Co td. M OTP d. Vcc_G Ma ike El ec c( Ho g) Co Ma ike El ec ng )C o td . t , Ko ng ,.L Shen Zhen Strong Link Electronics LY9523/LY9525/LY9526/LY9527/LY9528 Ko n (H o GND Vcc FB Grou nd 2 4 Vcc-G Power Su p ply special ly for Internal Gate Driver g) Co Pin No. 1 3 5 ng Pin Name ,.L td. PIN DESCRIPTIONS Descriptions nic power supply pin on tro (H El g) 6, 7, 8 ec Drain Co on tro ec Name (H Adapting 6W 10W 20W 22W 24W Openi ng 8W Adapting 5W 8W 15W 20W El ike LY952 5 LY952 6 LY952 7 LY952 8 nic 14W 24W 28W 30W tro gK Ma on Unit V V LY952 3 g) 7W 12W 20W 24W 28W Co Openi ng on 190V ~ 2 60V 85V ~ 26 5V ,.L nic gK on g) 3/7 OUTPUT POWER TABLE gK on nic lec eE tro ABSOLUTE MAXI Ma ik MUM RATINGS (T a=25 ℃ ) nic (H 24W Vcc-G Voltage o,. Ltd . Ma ik LY952 3 LY952 5 LY952 6 LY952 7 LY952 8 ID ID ID ID ID 0.80 1.0 2.0 3.0 4.0 25 eE lec A A A V V )C Power Supply V oltage V VCC ,.L td. Co Maike Electronic (HK) Co,.Ltd. LY-DOC952X REV:2.1 www.maike-tech.com Feb..2011 on td. aik eE lec g) tro V F B Maximum Input Voltage Ma ik -0.3 ~ 7.0 (H on Vcc zener clamp continuous current tro nic V GS ±20 (H A A Drain In pu t Voltage eE lec Characteristics Symbol V Drain Value 650 on Co on td. M Sense Current s ense input pin The Drain pin is designed to connect directly to the primary lead of the transformer and is capable of switching a ma ximu m of 650V gK Feedback input pin ,.L t d. Ma ike El ec c( Ho g) Co Ma ike El ec ng )C o td . t .


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