AAT2846_08 Datasheet, PDF (18/22 Pages) Advanced Analogic Technologies – High Current Charge Pump with Dual LDO for Backlight and Flash Applications

PRODUCT DATASHEET
AAT2846
ChargePump^TM High Current Charge Pump with Dual LDO for Backlight and Flash Applications
Button(s) Pushed
DATA
LIGHT
LIGHT+DATA
MOVIE
MOVIE+DATA
FLASH
FLASH+DATA
LIGHT+MOVIE+FLASH
Description
Increment the data setting for the most recently activated mode. With backlight or movie mode activated,
hold down the button to auto-cycle through the brightness levels.
Toggle ON/OFF the backlighting section. Set the brightness level using the DATA button (defaults to Data 1).
Decrement the brightness setting for backlight mode. Hold down to auto-cycle.
Toggle ON/OFF movie mode illumination. Set the brightness level using the DATA button (defaults to Data 10).
Decrement the brightness setting for movie mode. Hold down to auto-cycle.
Generate a flash pulse. Pulse duration is the lesser of 2 seconds or the CT value result. Set the brightness
level using the DATA button (defaults to Data 1).
Toggle ON/OFF the LDOs.
Reset. Clear all data and bring all enable lines low.
Table 11: AAT2846 Evaluation Board User Interface.
Evaluation Board Layout
Figure 6: AAT2846 Evaluation Board
Layout Top Side.
Figure 7: AAT2846 Evaluation Board
Layout Bottom Side.
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2846.2008.03.1.1