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

ORDER NUMBER	MARKING	TEMP. RANGE	PACKAGE (Green)
G5517R51U	5517	~40°C to 85°C	TQFN4X4-24

Note: R5: TQFN4X4-24 1: Bonding Code U: Tape & Reel

Pin Configurat

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