PRODUCT DATASHEET
AAT2846
ChargePumpTM High Current Charge Pump with Dual LDO for Backlight and Flash Applications
Button(s) Pushed
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.
DATA
LIGHT
LIGHT+DATA
MOVIE
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.
MOVIE+DATA
Generate a flash pulse. Pulse duration is the lesser of 2 seconds or the CT value result. Set the brightness
FLASH
level using the DATA button (defaults to Data 1).
FLASH+DATA
Toggle ON/OFF the LDOs.
LIGHT+MOVIE+FLASH
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
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
