AnalogicTech, a developer of power management integrated circuits, has introduced the AAT3620, the industry’s first fully integrated single-cell Lithium-ion battery charger capable of supplying up to 2A charge current in a small 3x3mm TDFN package. This innovative dual mode solution provides a high efficiency switching charger during Constant Current (CC) and Constant Voltage (CV) mode. To minimize EMI and RFI emission, the device switches to linear mode during CV mode where power dissipation is at a minimum.
As portable devices integrate increasingly complex features such as GPS, Bluetooth, Wi-Fi, FM, cameras, and high resolution displays, they require higher capacity batteries and longer charge times to support those functions. This unique solution is optimized to serve these portable systems where larger battery capacity and faster charge time is an essential requirement for high performance.
The AAT3620 is a dual mode, PWM switching and linear mode charger designed to maximize charge efficiency. Operating across a 4.3V to 6.0V input range, the device performs battery charging using a 1.5MHz PWM converter. During CC and most of CV mode the device delivers up to 2A. When the current dips below 300mA in CV mode, the device automatically switches to a low noise linear mode minimizing noise, EMI and RFI emission.
The AAT3620 also features programmable end of charge using external resistor, built-in reverse blocking, a 1 percent constant voltage mode regulation and an integrated programmable charging timer. Over-voltage, over-current and over-temperature protection circuits monitor charge state and battery charge temperature for fault conditions. The charger IC also adds a status monitor output pin to indicate battery charge status and power source status via a display LED.
Qualified over a -40 to +85 degrees C temperature range, the AAT3620 is available in a 14-pin, 3x3mm TDFN package.
For further information and reader enquiries:
Bijan Mohandes, Advanced Analogic Technologies, Inc., Europe, Liberty House, The Enterprise Centre, New Greenham Park, Newbury, RG19 6HW
Tel: +44 1635 817 260
Fax: +44 (0) 1635 817261
Advanced Analogic Technologies, Inc. (AnalogicTech) is a supplier of Total Power Management 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 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.
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.