AnalogicTech has introduced the AAT1112 and AAT1145, 1.5A and 1.2A constant frequency current mode step-down converters. Available in a small, 3x3mm TDFN package, these current-mode converters require no external compensation components and offer designers highly compact and easy-to-implement solutions.
Many portable electronics devices contain circuitry that must be powered from a 3.3V rail. Unlike comparable voltage-mode step-down converters, the current-mode AAT1112 and AAT1145 enable a Lithium-ion battery input to a 3.3V output at full rated current. These devices also minimise the size of the entire solution without forcing the system designer to iteratively determine the correct external compensation components.
The AAT1112 supplies up to 1.5A output current from a 2.4V to 5.5V input. The AAT1145 supplies up to 1.2A output current from a 2.5V to 5.5V input. Output voltage can be regulated from 0.6V to VIN. The devices also help extend battery life by running at 100 percent duty cycle for low dropout operation and by offering up to 95 percent power efficiency.
Slope-compensated current mode PWM control enables the use of inductor values as low 1µH; while the high 1.5 MHz and 1.4MHz switching frequency enables the use of small external components, resulting in a small total solution.
The AAT1112 and AAT1145 offer integrated soft start and short-circuit and thermal fault protection. They also feature a low shutdown current of <1 µA.
Rated over the -40 to +85 degrees C temperature range, the AAT1112 step-down converter comes in both a Pb-free, 3x3mm, 12-lead TDFN package and Pb-free, 2.75x3mm, 12-lead TSOPJW package. The AAT1145 step-down converter comes in a Pb-free, 3x3mm, 10-lead TDFN package.
For further information and reader enquiries:
Phil Dewsbury, Advanced Analogic Technologies, Inc., Europe, Liberty House, The Enterprise Centre, Newgreenham Park, Newbury, RG19 6HW
Tel: +44 (0) 1189 657763 E-mail: firstname.lastname@example.org
Fax: +44 (0) 1189 657764 Web: http://www.analogictech.com/
Advanced Analogic Technologies Incorporated (AnalogicTech) is a supplier of power management semiconductors for mobile consumer electronic devices, such as wireless handsets, notebook and tablet computers, smartphones, digital cameras, and digital audio players. The company focuses its design and marketing efforts on the application-specific power management needs of consumer, communications, and computing applications in these rapidly evolving devices. AnalogicTech is headquartered in Sunnyvale, California, with offices in Beijing, Hong Kong, Japan, Shanghai, Shenzhen, South Korea, Sweden, UK, France, and Taiwan, as well as a worldwide network of sales representatives and distributors. For more information, please visit the AnalogicTech website: www.analogictech.com.
Note: The above text is the public part of the press release obtained from the manufacturer (with minor modifications). EETimes Europe cannot be held responsible for the claims and statements made by the manufacturer. The text is intended as a supplement to the new product presentations in EETimes Europe magazine.