AAT2842 Overview
The AAT2842 is a highly integrated charge pump with dual linear regulators optimized for systems operating with lithium-ion/polymer batteries. The charge pump provides power for both white LED backlight/keypad and flash. Up to four backlight LEDs can be driven at up to 30mA each and keypad LEDs can be driven using lower currents set by the S2Cwire interface.
AAT2842 Key Features
- VIN Range: 2.7V to 5.5V
- Tri-Mode Charge Pump
- Drives up to Four Backlight/Keypad and Four Flash
- Separate S2Cwire Control for Backlight/Keypad and
- Backlight/Keypad and Flash Current Set by Separate
- Flash Timer Set with External Capacitor
- Up to 2MHz Switching Frequency
- Two Linear Regulators
- 200mA Output Current
- 200mV Dropout
AAT2842 Applications
- VIN Range: 2.7V to 5.5V
