PRODUCT DATASHEET
AAT3113,AAT3114/14A
TM
ChargePump
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
parallel-connected current sources. This feature is par-
Driving White LED Display Module
Backlights and Individual White LEDs
Connected in Parallel
ticularly useful to power pre-manufactured display mod-
ules that are pre-wired with white LED backlights con-
nected in a parallel circuit configuration. All outputs can
be connected in parallel to drive groups of LEDs as well.
The internal current source reference circuit bases feed-
back from current sensed on the D1 output. For best
operation, the only requirement for this application is
that the output D1 should always be connected to the
load circuit.
The AAT3114/14A D1 to D6 outputs are true constant
current sources capable of driving up to 20mA each over
the operation input voltage range. Since these outputs
are true constant current sources, they may be con-
nected in parallel to drive a single power output. Any
combination of outputs (D1 to D6) may be connected in
parallel. The maximum total output current is a sum of
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3113.2008.05.1.10
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
