EL7585

Features:

• 3.5A current limit FET options
• 3V to 5V input
• Up to 20V boost out
• 1% regulation on all outputs
• V_BOOST/V_LOGIC-V_OFF-V_ON or V_LOGIC-V_OFF-V_BOOST -V_ON sequence control
• Programmable sequence delay
• Fully fault protected
• Thermal shutdown
• Internal soft-start
• 20-pin 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




Specifications

V_DELB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
V_DRVP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36V
V_DRVN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20V
V_DD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5V
V_LX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24V
V_DRVL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  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 EL7585 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 LDOs for VON and VLOGIC generation, and a single negative LDO for V_OFF generation. The boost converter can be programmed to operate in either P-mode or PI-mode for improved load regulation.

The EL7585 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 V_BOOST, V_OFF, then V_ON or for V_OFF, V_BOOST, and V_ON sequencing. The latter requires a single external transistor. The timing of the start-up sequence is set using an external capacitor.

The EL7585 is specified for operation over the -40°C to +85°C temperature range.