G5565

Global Mixed-mode Technology G5565 Quad-Output TFT LCD Bias Power Features „ Input Supply Range: 9.5V ~ 14V „ Current mode Boost converter for AVDD ¾ Adjustable switching frequency ¾ Integrated 20V/4A ,0.1Ω switching N-MOSFET ¾ 1.5% accurate with 3.5-A switching current „ Buck Converter for VLOGIC ¾ Fixed 750kHz switching frequency ¾ Integrated 12-V/0.2-C Switching N-MOSFET ¾ 1.5% accurate with 1.5-A switching current „ Charge-pump regulator for VGON & VGOFF „ Built-in power-on sequence and soft-start function „ GD Signal to drive external P-MOSFET „ Protection Function ¾ Input Under Voltage Lockout (UVLO) ¾ Thermal overload Protection (TOP) ¾ Over-Voltage Protection for (OVP) ¾ Over-Current Protection (OCP) ¾ Output Under Voltage Protection (UVP) ¾ Short Circuit Protection (SCP) „ Available in TQFN-5X5-28 Package Applications „ TFT LCD Displays General Description The G5565 DC-DC converter provides regulated voltages required by thin-film transistor (TFT) liquid crystal displays (LCD) panels in TQFN5X5-28 package. One step-up converter, one step-down converter, and two charge pumps regulators converter the 8V to 14V input voltage into four output voltages. These features complete the power- supply requirements of large screen LCD panels. The step-up converter provides source voltages VAVDD and the step-down converter provides logic voltage VLOGIC for the system. The dual charge pumps regulators independently generate adjustable regulated output voltages VGL and VGH to bi...