G5517 台湾致新代理商 GMT DC-DC系列液晶显示器的集成PMIC

Part Number	Vin (V)min.	Vin (V) max.	FSW (k Hz)	ILX (A)	VLX(V)	OPA S/R (V/us)	OPA ISC (mA)	Note	Package
G5517	2.5	5.5	1200	3.0	18	40	200	Async-Boost, VGH/VGL Charge-Pump, VCOM, GPM, Voltage Detector	TQFN4X4-24

Integrated Power Solution for TFT-LCD

GeneralDescription
The G5517 includes a step-up converter, two charge pumps, and a high current operational amplifier for TFT LCD. Also included are a logic-controlled high-voltage switch with adjustable delay and an open drain output reset comparator.

The step-up DC/DC converter provides the regulated power supply for the panel source driver IC. The con-verter is a high performance current-mode regulator with operating frequency at 1.2MHz. It also provides fast transient response and high efficiency.

The charge pumps in G5517 regulate TFT gate-on and gate-off power supplies. The power-on sequence is controlled by the control logic. The blanking time for reset function is 163ms (typ.) from startup. The RSTIN begins to detect voltage below 1.25V afterward. For more detail information, please refer to the timing chart.

G5517 is available in TQFN4X4-24 package

Features
2.5V to 5.5V Input Supply Range
1.2MHz Current-Mode Step-Up Converter
Built-In 18V, 3A 0.2Ω n-Channel MOSFET
Charge Pumps for VGON and VGOFF
High Voltage Switch with Adjustable Delay
Thermal Overload Protection
TQFN4X4-24 Package

Applications
LCD Monitor Panels
Notebook Computer Displays
LCD TVs

Ordering Information