G2523 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
G2523	2.6	5.5	600/ 1200	3.0	20	20	200	Async-Boost, VGH Regulator, OPA*3, Buck-Boost VGL with Temp. Comp.	TQFN4X4-32

General Description
The G2523 includes a high-performance boost regulator, a buck-boost controller, a high voltage charge pump regulator, 3 VCOM buffers (unity-gain OPA) for ac-tive-matrix thin-film transistor (TFT) liquid-crystal dis-plays (LCDs).

The boost regulator provides the regulated supply voltage for the panel source driver ICs. It is a high switching frequency (1.2MHz) current-mode regulator with an integrated 20V/0.15Ω NMOS switch that al-lows the use of ultra small inductors and ceramic ca-pacitors. It provides fast transient response to pulsed loading while achieving efficiency over 85%. The de-vice can produce output voltage as high as 18V from an input as low as 2.8V.

A voltage mode buck-boost controller cooperates with external temperature sensor provide compensated gate-off voltage supply to the level shifters. While the charge pump controller regulates the external charge pump voltage source to supply for other devices.

The VCOM buffer can drive the LCD VCOM voltage that features high short-circuit current (200mA), fast slew rate (20V/μs), wide bandwidth (8MHz) and rail-to-rail input/output.

The G2523 features extensive protection functions that include UVLO, OCP, UVP, OVP, and OTP. It is available in a QFN5X5-32 package.

Features
2.6V~5.5V Supply Range
Current Mode Boost Regulator for AVDD
0.15Ω/20V/3A Embedded NMOS switch
Fixed 1.2MHz Switching Frequency
Up to 85% Efficiency
1% Output Regulation
Voltage Mode Buck-Boost Regulator for VGL
Fixed 600kHz Switching Frequency
Up to 85% Efficiency
1% Output Regulation
Charge Pump Regulator for VGH
3-Channel Rail-to-Rail Unity-Gain Operational Amplifier
±200mA Output Short Circuit Current
20V/μs Slew Rate
18MHz, -3dB Bandwidth
Built-In Power On Sequence and Soft Start Function
Protections:
Input Under Voltage Lockout (UVLO)
Over Current Protection for AVDD (OCP)
Output Under Voltage Protection for AVDD,
VGH and VGL (UVP) Output Over Voltage Protection for AVDD, VGL (OVP)
Operational Amplifier Short Circuit Protection (SCP)
Over Temperature Protection (OTP)
QFN5X5-32 Package
RoHS Compliant