器件名称: AAT3114A
功能描述: High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
文件大小: 1596.8KB 共15页
简 介:PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
TM
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
Features
AAT3113: Four Outputs AAT3114/14A: Six Outputs 20mA Full-Scale Current Simple Serial Control (S2Cwire) Interface 32-Position Logarithmic Scale with Digital Control Low Noise Constant Frequency Operation 33% Less Input Current Than Doubler Charge Pump High Accuracy Brightness Matching Small Application Circuit Regulated Output Current Automatic Soft Start VIN Range: 2.7V to 5.5V No Inductors 600kHz Switching Frequency IQ <1A in Shutdown Temperature Range: -40°C to 85°C 12-Pin TSOPJW Package (AAT3113) 16-Pin QFN Package (AAT3114/14A)
General Description
The AAT3113 and AAT3114/14A are low noise, constant frequency charge pump DC/DC converters that use fractional (1.5X) conversion to increase efficiency in white LED applications. The devices can be used to produce current levels up to 20mA for each output from a 2.7V to 5.5V input. A low external parts count (two 1F flying capacitors and two small bypass capacitors at VIN and OUT) makes these devices ideally suited for small, battery-powered applications. AnalogicTech’s Simple Serial Control (S2Cwire) interface is used to enable, disable, and set the LED drive current for 32-level logarithmic scale LED brightness control. AAT3113 and AAT3114/14A devices have a thermal management system for protection in the event of a short-circuit condition on any of the output pins. Built-in……
