Rev. 1.00

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HT7L4091

Universal Step-Down PWM Control

For High Brightness LED Lighting Control

Holtek Semiconductor Inc. (Headquarters)

No.3� C�eation Rd. II� Science Pa�k� Hsinchu� Taiwan

Te�: ��6-3-563-1999

Fax: ��6-3-563-11�9

htt�://www.ho�tek.com.tw

Holtek Semiconductor Inc. (Taipei Sales Office)

4F-�� No. 3-�� YuanQu St.� Nankang Softwa�e Pa�k� Tai�ei 115� Taiwan

Te�: ��6-�-�655-7070

Fax: ��6-�-�655-7373

Fax: ��6-�-�655-73�3 (Inte�nationa� sa�es hot�ine)

Holtek Semiconductor Inc. (Shenzhen Sales Office)

5F, Unit A, Productivity Building, No.5 Gaoxin M 2nd Road, Nanshan District, Shenzhen, China 518057

Te�: �6-755-�616-990�� �6-755-�616-930�

Fax: �6-755-�616-97��

Holtek Semiconductor (USA), Inc. (North America Sales Office)

46729 Fremont Blvd., Fremont, CA 94538, USA

Te�: 1-510-�5�-9��0

Fax: 1-510-�5�-9��5

htt�://www.ho�tek.com

The info�mation a��ea�ing in this Data Sheet is be�ieved to be accu�ate at the time of �ub�ication. Howeve��

Ho�tek assumes no �es�onsibi�ity a�ising f�om the use of the s�ecifications desc�ibed. The a���ications

mentioned he�ein a�e used so�e�y fo� the �u��ose of i��ust�ation and Ho�tek makes no wa��anty o�

representation that such applications will be suitable without further modification, nor recommends the use

of its ��oducts fo� a���ication that may ��esent a �isk to human �ife due to ma�function o� othe�wise. Ho�tek's

��oducts a�e not autho�ized fo� use as c�itica� com�onents in �ife su��o�t devices o� systems. Ho�tek �ese�ves

the right to alter its products without prior notification. For the most up-to-date information, please visit our