Converter Enables Portable Applications

Jan. 17, 2007
Advanced Analogic Technologies' AAT1149 is a high-performance, 400-mA step-down converter.

Advanced Analogic Technologies’ AAT1149 is a high-performance, 400-mA stepdown converter. Developed for space-constrained portable applications, the fast transient converter enables the use of the 0603 footprint, 1-mm high inductors for the smallest possible total solution size.

The AAT1149 delivers 400 mA of load current from an input range of 2.7 V to 5.5 V. Output voltage is programmable via external feedback resistors from 1.0 V to VIN. The stepdown converter achieves up to 98% efficiency. No-load quiescent current is only 45 µA. The 3-MHz switching frequency allows the use of small external components and keeps switching losses low.

To prevent damage during overload conditions, the AAT1149 adds current limit protection. An over temperature protection circuit disables switching if internal dissipation becomes excessive. An integrated 70-µs Soft Start feature limits current surge and eliminates output voltage overshoot at startup.

The AAT1149 is available in an 8-pin SC70JW package that measures only 2.0 mm x 2.1 mm. It sells for $0.87 each in 1000 piece quantities.

Sponsored Recommendations

TTI Transportation Resource Center

April 8, 2024
From sensors to vehicle electrification, from design to production, on-board and off-board a TTI Transportation Specialist will help you keep moving into the future. TTI has been...

Cornell Dubilier: Push EV Charging to Higher Productivity and Lower Recharge Times

April 8, 2024
Optimized for high efficiency power inverter/converter level 3 EV charging systems, CDE capacitors offer high capacitance values, low inductance (< 5 nH), high ripple current ...

TTI Hybrid & Electric Vehicles Line Card

April 8, 2024
Components for Infrastructure, Connectivity and On-board Systems TTI stocks the premier electrical components that hybrid and electric vehicle manufacturers and suppliers need...

Bourns: Automotive-Grade Components for the Rough Road Ahead

April 8, 2024
The electronics needed for transportation today is getting increasingly more demanding and sophisticated, requiring not only high quality components but those that interface well...

Comments

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