Electronicdesign 1644 Xl 38482 D
Electronicdesign 1644 Xl 38482 D
Electronicdesign 1644 Xl 38482 D
Electronicdesign 1644 Xl 38482 D
Electronicdesign 1644 Xl 38482 D

Micropower Step-Down Regulator Has On-Chip Watchdog Timer

Oct. 8, 2008
The LT3689 is a 700-mA, 36-V input step-down switching regulator with a power-on reset and watchdog timer. Its Burst Mode operation keeps quiescent current under 85 µA in no-load standby conditions. The regulator’s 3.6-V to 36-V input...

The LT3689 is a 700-mA, 36-V input step-down switching regulator with a power-on reset and watchdog timer. Its Burst Mode operation keeps quiescent current under 85 µA in no-load standby conditions. The regulator’s 3.6-V to 36-V input voltage range, with 60-V transient ride-through, makes it suitable for load-dump and cold-crank conditions commonly found in automotive applications. Its 1.2-A internal switch can deliver up to 700 mA of continuous output current at voltages as low as 0.8 V. The device’s Burst Mode operation provides ultra-low quiescent current, well suited for applications such as automotive or telecom systems, which demand always-on operation and optimum battery life. Switching frequency is user-programmable from 350 kHz to 2.2 MHz, enabling the designer to optimize efficiency while avoiding critical noise-sensitive frequency bands. The LT3689’s 3-mm x 3-mm QFN-14 (or thermally enhanced MSOP-16) package and high switching frequency keeps external inductors and capacitors small. The LT3689EUD and LT3689EMSE start at $3.20 and $3.25 each, respectively. The LT3689IUD and LT3689IMSE withstand a -40ºC to 125ºC operating junction temperature and cost $3.56 and $3.61 each, respectively. Finally, the LT3689HMSE withstand a -40ºC to 150ºC operating junction temperature and costs $3.86 each. All versions are available from stock and all prices are in lots of 1000. LINEAR TECHNOLOGY CORP., Milpitas, CA. (408) 432-1900.

 

Company: LINEAR TECHNOLOGY CORP.

Product URL: Click here for more information

Sponsored Recommendations

Highly Integrated 20A Digital Power Module for High Current Applications

March 20, 2024
Renesas latest power module delivers the highest efficiency (up to 94% peak) and fast time-to-market solution in an extremely small footprint. The RRM12120 is ideal for space...

Empowering Innovation: Your Power Partner for Tomorrow's Challenges

March 20, 2024
Discover how innovation, quality, and reliability are embedded into every aspect of Renesas' power products.

Article: Meeting the challenges of power conversion in e-bikes

March 18, 2024
Managing electrical noise in a compact and lightweight vehicle is a perpetual obstacle

Power modules provide high-efficiency conversion between 400V and 800V systems for electric vehicles

March 18, 2024
Porsche, Hyundai and GMC all are converting 400 – 800V today in very different ways. Learn more about how power modules stack up to these discrete designs.

Comments

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