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Integrated, single-chip step-down converter and load switch delivers power with protection

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By eeNews Europe


Hensen Wong, Product Marketing Manager at AnalogicTech, said: “Consequently, peripheral system designers must take great care to make sure they safely maximize the power they receive from the USB host.  By offering the safety of a precision current limit switch and the 95 percent efficiency of a DC/DC converter together in a single package, the AAT2138 enables system designers to develop small form-factor, energy efficient products that never exceed the compliance of the USB power supply, even under harsh transient conditions.”

The AAT2138 delivers maximum flexibility in one of the smallest single chip solutions in the marketplace. Its broad feature set includes selectable PFM/PWM modes, an external synch clock up to 3 MHz, independent enable pins for the DC/DC converter and load switch, and adjustable output voltage and current limit. Additionally, the part is optimized for a 1 µH inductor with no external compensation required and comes in a miniature, lead-free, low profile 3 mm x 3 mm 14-pin TDFN package, making it ideal for space constrained applications.

The AAT2138 is currently shipping and is priced at $1.19 for 1K units.
    
Visit Advanced Analogic Technologies at www.analogictech.com


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