DATASHEET
EL7586 NOT RECOMMENDED FOR NEW DESIGNS
RECOMMENDED REPLACEMENT PART
EL7586A EL7586, EL7586A FN9210
Rev 2.00
January 17, 2006 TFT-LCD Power Supply
The EL7586 and EL7586A represent multiple output
regulators for use in all large panel, TFT-LCD applications.
Both feature a single boost converter with an integrated 2A
FET, two positive LDOs for VON and VLOGIC generation,
and a single negative LDO for VOFF generation. The boost
converter can be programmed to operate in either P-mode
or PI-mode for improved load regulation. Features Both EL7586 and EL7586A also integrate fault protection for
all four channels. Once a fault is detected, the device is
latched off until the input supply or EN is cycled. EL7586
also features an integrated start-up sequence for
VBOOST/VLOGIC, VOFF, then VON or for VLOGIC, VOFF,
VBOOST, and VON. The latter requires a single external
transistor. The timing of the start-up sequence is set using
an external capacitor. VLOGIC-VOFF-VBOOST-VON or
VBOOST/VLOGIC-VOFF-VON sequence control
-VLOGIC is on from start-up for EL7586A EL7586A features an immediately-enabled VLOGIC output
which is independent of EN input. The VLOGIC output will be …
