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On the AAT2846, current on the two flash outputs can be programmed to anyof 16 settings up to 300 mA for each (600 mA total) via an external resistor. For uniform power dissipation, channel-to-channel flash current matching is4%.
Both devices integrate two high-performance, low-noise LDOs. Each LDO usesits own individual enable input and supplies up to 200 mA output current.Intended to supply the basic power requirements of functions such as a housekeeping controller or a camera module, the output voltage of each LDO is programmable from 1.2V to 5V via a resistor divider. By offering two separatecontrols for the LDOs, the AAT2846 and AAT2856 give the system designer addedflexibility when sequencing multiple external power supplies.
The AAT2846 and AAT2856 also feature integrated short-circuit and over-temperature protection. Soft start circuitry automatically prevents excessiveinrush current at start up and mode transitions.
Price and availability
The AAT2846 is qualified across the -40 C to +85 C temperature range andcomes in a Pb-free, 28-lead, TQFN44 package. It sells for
Advanced Analogic Technologies Incorporated (AnalogicTech) is a supplierof power management semiconductors for mobile consumer electronic devices,such as wireless handsets, notebook and tablet computers, smartphones, digitalcameras, and digital audio players. The company focuses its design andmarketing efforts on the application-specific power management needs ofconsumer, communications, and computing applications in these rapidly evolvingdevices. AnalogicTech is headquartered in Sunnyvale , California, with officesin Beijing , Hong Kong , Japan , Shanghai , Shenzhen, South Korea , Sweden , UK, France , and Taiwan , as well as a worldwide network of sales representativesand distributors. For more information, please visit the AnalogicTech website:www.analogictech.com. (AnalogicTech - G)