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PDF G2523 Data sheet ( Hoja de datos )
| Número de pieza | G2523 | |
| Descripción | Integrated LCD Bias Power Supply | |
| Fabricantes | Global Mixed-mode Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de G2523 (archivo pdf) en la parte inferior de esta página. Total 2 Páginas | ||
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Global Mixed-mode Technology
G2523
Integrated LCD Bias Power Supply
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
Applications
LCD TV Panel
LCD Monitor Panel
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.
Ordering Information
ORDER
NUMBER
G2523QA1U
Note: QA: QFN5X5-32
1: Bonding Code
U: Tape & Reel
MARKING
2523
TEMP.
RANGE
-40°C to +85°C
PACKAGE
(Green)
QFN5X5-32
Ver: 0.1
Aug 22, 2013
TEL: 886-3-5788833
http://www.gmt.com.tw
1
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet G2523.PDF ] | |
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