Step-Down Controller maximizes 12 V adapter flexibility.
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Press Release Summary:
Single-output AAT1185, fabricated in Modular BCD process, offers high- and low-side pins to drive external N-Channel MOSFETs. Supporting fully synchronous and non-synchronous operation, device enables development of solutions for disparate applications. Input range is 6-24 V, output voltage is adjustable from 0.8-5.5 V, and output current ranges from less than 1 A to 10 A. Controller has 490 kHz switching frequency and constant frequency voltage mode control.
Original Press Release:
AnalogicTech's High Voltage Step-down Controller Maximizes 12V Adapter Design Flexibility
Use of External MOSFETs Supports Both Synchronous and Non-Synchronous Designs
Santa Clara, CA - November 11, 2008 - Advanced Analogic Technologies Incorporated (AnalogicTech) (Nasdaq: AATI), a developer of power management semiconductors for mobile consumer electronic devices, announced today the AAT1185, a single output, step-down controller capable of providing high efficiency power conversion for lower cost 12V adapters. Fabricated in AnalogicTech's innovative Modular BCD process, the new controller maximizes design versatility by offering both high and low-side pins to drive a wide variety of external N-Channel MOSFETs. Moreover, by supporting both fully synchronous and non-synchronous operation, the new device allows designers to develop solutions for such disparate applications as wireless LANs, DSL and cable modems, notebook computers and set-top boxes with a broad range of performance and power efficiency levels.
"Given the diversity of 12V adapter applications today, designers need a high degree of flexibility to optimize the solution for their particular system," says CJ Zhang, product line vice president at AnalogicTech. "By providing low and high side pins to drive external MOSFETs instead of embedding the MOSFETs directly into the IC, the AAT1185 controller gives designers the option of building lower-cost, non-synchronous solutions using a Schottky diode on the load side switch or building high efficiency synchronous solutions using any of a wide array of power MOSFETs."
Up to 10A Output
The AAT1185 single output step-down controller supports a wide 6V to 24V input range. Output voltage is adjustable from 0.8 to 5.5V. Output current ranges from <1A up to 10A.
The controller provides high and low-side pins to drive external N-Channel power MOSFETs. Both drive pins are compatible with a wide range of external MOSFETs allowing designers to use the AAT1185 to develop control solutions for both low power and high power configurations.
The AAT1185's constant frequency voltage mode control allows designers to optimize performance across the entire output voltage and load range. A high 490 kHz switching frequency helps designers keep external component size small and efficiency high by supporting the use of a wide range of L/C filtering components. External compensation allows the designer to optimize transient response. Shutdown current is < 30 µA.
To ensure device integrity, the AAT1185 features internal soft start, programmable over-current and over-temperature protection circuits.
Price and Availability
Qualified across the -40° C to +85° C temperature range, the AAT1185 is available in a low cost, Pb-free, 14-pin TSOPJW package. The IC sells for $0.79. in 1K quantities.
About AnalogicTech
Advanced Analogic Technologies, Inc. (AnalogicTech) is a supplier of Total Power Management(TM) semiconductor solutions for mobile consumer electronic devices, such as wireless handsets, notebook and tablet computers, smartphones, digital cameras, wireless LAN, and personal media 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 also develops and licenses device, process, package, and application-related technology. AnalogicTech is headquartered in Santa Clara, California and Macau, S.A.R., with offices in China (Beijing, Shanghai and Shenzhen), Hong Kong, Taiwan, Japan, South Korea, Sweden, France and United Kingdom, as well as a worldwide network of sales representatives and distributors. The company is listed on the NASDAQ exchange under the ticker symbol AATI. For more information, please visit the AnalogicTech website: www.analogictech.com.
AnalogicTech and the AnalogicTech logo are trademarks of Advanced Analogic Technologies Incorporated. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders.
