AAT2860 - Advanced Analogic Technologies

AAT2860 Backlight/Flash LED Driver and Multiple LDO Lighting Management Unit

The AAT2860-x is a highly integrated charge pump-based lighting management unit (LMU) with three low dropout (LDO) regulators optimized for single-cell lithium-ion/ polymer systems. The charge pump provides power for all LED outputs; multiple backlight and flash LED configurations are available. The backlight LED outputs can be programmed up to 31mA each and.

Features

• Input Voltage Range: 2.7V to 5.5V
• I2C Compatible Serial Interface
• Tri-Mode Charge Pump ▪ Drives up to Seven LEDs (Backlight/Flash)
• Programmable Backlight Current Settings ▪ 32 Levels - 0.5mA to 31mA
• Programmable Flash Current ▪ 16 Levels
  – OFF to 300mA
• 1MHz Switching Frequency
• Automatic Soft-Start
• Three Low Dropout Regulators ▪ 300mA Output Current ▪ 150mV Dropout ▪ Programmable Output from 1.5V to 3.0V ▪ Output Auto-Discharge for Fast Shutdown
• Built-In Thermal Protection
• -40°C to +85°C Temperature Range
• TQFN34-24 Package ChargePumpTM General Description The AAT2860-x i.