AAT2842 Analogic Corporation, AAT2842 Datasheet - Page 3

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AAT2842

Manufacturer Part Number
AAT2842
Description
Manufacturer
Analogic Corporation
Datasheet

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Pin Descriptions (continued)
Pin Configuration
2842.2006.10.1.0
Pin #
EP
24
25
26
27
28
Symbol
FENS
BENS
BL4
BL3
BL2
Description
Flash enable and serial control input. FENS is the on/off control for the flash and the S
input to serially control the flash LED brightness relative to the maximum current set by the
resistor at FSET.
Backlight enable and serial control input. BENS is the on/off control for the backlight and the
S
set by the resistor at BSET.
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.
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.
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.
Exposed paddle (bottom); connect to PGND as closely as possible to the device.
2
Cwire input to serially control the backlight LED brightness relative to the maximum current
AGND
BSET
FSET
Control and Dual LDO for Backlight and Flash
REF
FBB
BL1
CT
High-Current Charge Pump with S
1
2
3
4
5
6
7
TQFN44-28
(Top View)
28
8
27
9
26
10
25
11
12
24
23
13
22
14
21
20
19
18
17
16
15
FL3
FL4
PGND
IN
C2-
C2+
ENL
2
Cwire™
2
Cwire
3

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