GMT G5519

G5519
Global Mixed-mode Technology Inc.
TFT-LCD DC/DC Converter with Operational Amplifiers
Features
General Description
„
„
The G5519 includes a high-performance boost converter, two linear-regulator controllers, and high current operational amplifiers for TFT-LCDs. Also included is a logic controlled, high-voltage switch with
adjustable delay.
2.5V to 5.5V Input Supply Range
1.2MHz Current Mode Boost Converter
Š Fast Transient Response
Š 1.6% Accurate Output Voltage
Š 18V/2.5A, 0.16Ω n-channel MOSFET
Š 91% High Efficiency
„ Linear-Regulator Controllers for VGON and VGOFF
„ High-Performance Operational Amplifiers
Š ±150mA Output Short-Circuit Current
Š 12V/μs Slew Rate
Š 12MHz, -3dB Bandwidth
Š Rail-to-Rail Input and Outputs
„ Internal Soft Start
„ Logic-Controller, High-Voltage Switch with Adjustable Delay
„ Multiple Overload Protection
„ Thermal Shutdown
„ Small 32-pin 5mmX5mm TQFN package
The boost converter provides the regulated supply
voltage for the panel source driver ICs. It is a highfrequency (1.2MHz) current-mode regulator with an
integrated 18V n-channel MOSFET that allows the use
of ultra-small inductors and ceramic capacitors. It provides fast transient response to pulsed loads while
achieving efficiencies over 86%.
Using external low-cost transistors, the linear-regulator
controllers provide tight regulation VGON/VGOFF for the
panel gate drivers with fault protection.
The operational amplifier are ideal for VCOM and
VGAMMA applications. They features high output current
(±150mA), fast slew rate (12V/μs), wide bandwidth
(12MHz), and rail-to-rail inputs and outputs.
Applications
„
„
LCD Monitor Panels
Notebook Computer Displays
„ LCD TVs
The G5519 is available in a 32-pin TQFN package for
ultra-thin LCD panels.
Ordering Information
ORDER
NUMBER
MARKING
TEMP.
RANGE
PACKAGE
(Green)
G5519RA1U
5519
-40°C to +85°C
TQFN5X5-32
FBN
FBP
25
28
DRVP
DRVN
29
26
CTL
DEL
30
COM
DRN
32
31
Pin Configuration
27
Note: RA: TQFN5X5-32
Bonding Code: 1
U: Tape & Reel
SRC
1
24
COMP
REF
2
23
FB
AGND
3
22
IN
PGND
4
21
LX
OUT1
5
NEG1
Thermal
Pad
13
14
15
16
OUT3
SUP
POS4
NEG4
OUT4
12
POS5
17
11
18
POS3
7
8
BGND
POS1
OUT2
9
NEG5
10
19
POS2
OUT5
6
NEG2
20
G5519 TQFN5X5-32
Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.3
Nov 18, 2009
1