DC to DC Power Supplies (Converters)
Charge Pump suits multi-function LED flash applications.
Share:
Press Release Summary:
Enabling designers to support current levels up to 800 mA with external resistor, AAT3174 simplifies design of applications supporting flash and movie modes by allowing designers to control LEDs via Simple Serial Control(TM) interface or by R(SET) pin. Product also optimizes power efficiency during extended torch mode operations by using tri-mode charge pump, which combines 1X, 1.5X, and 2X operation modes with internal sensing circuit.
Original Press Release:
AnalogicTech Announces New High Current Charge Pump for Multi-Function LED Flash Applications
Device Dramatically Simplifies Dual Flash/Movie Mode Designs While Supporting Current Levels up to 800mA
SUNNYVALE, Calif., March 27 / / -- Advanced Analogic Technologies Incorporated (AnalogicTech) (NASDAQ:AATI), a developer of power management semiconductors for mobile consumer electronic devices, today announced the AAT3174, a high current, high efficiency charge pump for multi-function LED applications. This new device dramatically simplifies the design of applications supporting both flash and movie modes by allowing designers to control the LEDs via either AnalogicTech's Simple Serial Control(TM) (S(2)Cwire(TM)) interface or by the R(SET) pin. This unique capability also allows designers to support current levels as high as 800mA with an external resistor.
"A serial bus offers a powerful tool for driving LEDs, but it also requires that the designer take time to learn how to program it and develop a solution," notes Kin Shum, Product Line Director for AnalogicTech. "Designers who want to quickly and easily develop a solution that supports both flash and movie mode operation can use the AAT3174 to move between the two modes using a simple on/off toggle switch."
The AAT3174 also helps maximize power efficiency during extended torch mode operations by using a tri-mode charge pump which combines 1X, 1.5X, and 2X operation modes with an internal sensing circuit. This allows the AAT3174 to deliver power more efficiently than a simple voltage doubling (2X) charge pump.
Designed for small-footprint portable applications, the AAT3174 requires only four external capacitors (two 1uF flying capacitors and two small bypass capacitors on V(IN) and V(OUT)), plus a resistor to program the maximum regulated output current. The device also offers extensive protection circuitry, including a thermal management system which protects the AAT3174 in the event of a short-circuit condition at the output pin. In addition, integrated soft-start circuitry protects the device from excessive inrush current during start-up by disconnecting the load from V(IN) and reducing quiescent current to less than 1uA.
Price and Availability
Specified over the -40 degrees C to +85 degrees C temperature range, the AAT3174 is available in a Pb-free, 12-pin 3x3mm TDFN package. The device sells for $1.82 in 1000-unit quantities.
About AnalogicTech
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, and Taiwan, as well as a worldwide network of sales representatives and distributors. For more information, please visit the AnalogicTech website: www.analogictech.com. (AnalogicTech - G)
NOTE: 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.
CONTACT: Headquarters, Kin Shum of AnalogicTech, +1-408-737-4600, or kshum@analogictech.com; or Europe, Matthew Quint of Quint Public Relations, +1-650-599-9450, or mquint@quintpr.com, for AnalogicTech
