
Global Mixed-mode Technology Inc
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.
FEATUREs
◾ Input Supply Range: 9.5V ~ 14V
◾ Current mode Boost converter for AVDD
➢ Adjustable switching frequency
➢ Integrated 20V/4A ,0.1Ω switching N-MOSFET
➢ 1.5% accurate with 3.5-A switching current
◾ Buck Converter for VLOGIC
➢ Fixed 750kHz switching frequency
➢ Integrated 12-V/0.2-C Switching N-MOSFET
➢ 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
➢ Input Under Voltage Lockout (UVLO)
➢ Thermal overload Protection (TOP)
➢ Over-Voltage Protection for (OVP)
➢ Over-Current Protection (OCP)
➢ Output Under Voltage Protection (UVP)
➢ Short Circuit Protection (SCP)
◾ Available in TQFN-5X5-28 Package
APPLICATIONs
◾ TFT LCD Displays