Features: • 3.5A current limit FET options
• 3V to 5V input
• Up to 20V boost out
• 1% regulation on all outputs
• VOFF-VBOOST-VON orVBOOST
-VOFF-VON sequence control
- VLOGIC is on from start-up for EL7585A
• Programmable sequence delay
• Fully fault protected
• Thermal shutdown
• Internal soft-start
• 20 Ld QFN packages
• Pb-free plus anneal available (RoHS compliant)Application• LCD monitors (15"+)
• LCD-TV (up to 40"+)
• Notebook displays (up to 16")
• Industrial/medical LCD displays
Pinout
SpecificationsVDRVP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36V
VDRVN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20V
VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5V
VDELB, VLX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24V
VDRVL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5V
Storage Temperature . . . . . . . . . . . . . . . . . .. . . .-65°C to +150°C
Ambient Operating Temperature . . . . . . . . . . . . . .-40°C to +85°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . See Curves
Maximum continuous junction temperature. . . . . . . . . . . . . . 125°C
Description
The EL7585A represents a multiple output regulators for use in all large panel, TFT-LCD applications. It features a single boost converter with integrated 3.5A FET, two positive LDOsfor VON and VLOGIC generation, and a single negative LDOfor VOFF generation. The boost converter can beprogrammed to operate in either P-mode or PI-mode forimproved load regulation.
The EL7585A also integrates fault protection for all four channels. Once a fault is detected, the device is latched off until the input supply or EN is cycled. This device also features an integrated start-up sequence for VBOOST, VOFF,then VON or for VOFF, VBOOST, and VON sequencing. Thelatter requires a single external transistor. The timing of the start-up sequence is set using an external capacitor. The VLOGIC output is constantly enabled, but does shut down
when a fault condition is detected.
The EL7585A is specified for operation over the -40°C to +85°C temperature range.
EL7585A Data Sheet
