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AAT2842INJ-EE-T1 Datasheet(PDF) 3 Page - Advanced Analogic Technologies |
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AAT2842INJ-EE-T1 Datasheet(HTML) 3 Page - Advanced Analogic Technologies |
3 / 22 page AAT2842 High-Current Charge Pump with S 2Cwire™ Control and Dual LDO for Backlight and Flash 2842.2007.09.1.2 3 Pin Descriptions (continued) Pin Configuration TQFN44-28-0.4 TQFN44-28-0.45 (Top View) (Top View) N.B. Not recommended for new designs. 1 2 3 4 5 6 7 89 10 27 28 26 25 24 23 22 11 12 13 14 21 20 19 18 17 16 15 BL1 BSET FSET AGND CT REF FBB IN PGND C2- C2+ ENL FL4 FL3 1 2 3 4 5 6 7 89 10 28 27 26 25 24 23 22 11 12 13 14 21 20 19 18 17 16 15 BL1 BSET FSET AGND CT REF FBB IN PGND C2- C2+ ENL FL4 FL3 Pin # Symbol Description 24 FENS Flash enable and serial control input. FENS is the on/off control for the flash and the S 2Cwire input to serially control the flash LED brightness relative to the maximum current set by the resistor at FSET. 25 BENS Backlight enable and serial control input. BENS is the on/off control for the backlight and the S 2Cwire input to serially control the backlight LED brightness relative to the maximum current set by the resistor at BSET. 26 BL4 Backlight LED 4 current sink. BL4 controls the current through Backlight LED 4. Connect the cathode of Backlight LED 4 to BL4. If not used, connect BL4 to OUT. 27 BL3 Backlight LED 3 current sink. BL3 controls the current through Backlight LED 3. Connect the cathode of Backlight LED 3 to BL3. If not used, connect BL3 to OUT. 28 BL2 Backlight LED 2 current sink. BL2 controls the current through Backlight LED 2. Connect the cathode of Backlight LED 2 to BL2. If not used, connect BL2 to OUT. EP Exposed paddle (bottom); connect to PGND as closely as possible to the device. |
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