7W Buck LED Driver Resides In TSOT-23

Oct. 8, 2008
Housed in a 5-lead TSOT-23 package, the CAT4201 buck converter drives white LED strings up to 21V, regulates current up to 350 mA, and eliminates the need for a heat sink with efficiencies up to 94%. The chip relies on a patent-pending

Housed in a 5-lead TSOT-23 package, the CAT4201 buck converter drives white LED strings up to 21V, regulates current up to 350 mA, and eliminates the need for a heat sink with efficiencies up to 94%. The chip relies on a patent-pending switching-control algorithm that reportedly reduces system complexity, improves efficiency and allows an external RSET control resistor to preset a regulated LED current up to 350 mA from supplies as high as 24V. The device is compatible with switching frequencies up to 1 MHz, and integrated load-dump protection handles transients up to 40V. It can drive one 1W LED from a 6V supply or up to seven LEDs in series from a 24V supply. A dedicated enable control using minimal input current allows the load to be disabled and placed into a zero-current shutdown mode. Other features include short-circuit and thermal-overload fault protection. Price for the CAT4201 is $0.72 each/10,000. CATALYST SEMICONDUCTOR INC., Sunnyvale, CA. (800) 258-5991.

Company: CATALYST SEMICONDUCTOR INC.

Product URL: Click here for more information

Sponsored Recommendations

Understanding Thermal Challenges in EV Charging Applications

March 28, 2024
As EVs emerge as the dominant mode of transportation, factors such as battery range and quicker charging rates will play pivotal roles in the global economy.

Board-Mount DC/DC Converters in Medical Applications

March 27, 2024
AC/DC or board-mount DC/DC converters provide power for medical devices. This article explains why isolation might be needed and which safety standards apply.

Use Rugged Multiband Antennas to Solve the Mobile Connectivity Challenge

March 27, 2024
Selecting and using antennas for mobile applications requires attention to electrical, mechanical, and environmental characteristics: TE modules can help.

Out-of-the-box Cellular and Wi-Fi connectivity with AWS IoT ExpressLink

March 27, 2024
This demo shows how to enroll LTE-M and Wi-Fi evaluation boards with AWS IoT Core, set up a Connected Health Solution as well as AWS AT commands and AWS IoT ExpressLink security...

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!