Global Mixed-mode Technology Inc.
G5535
LCD Panel Power Supplies with Low-Cost Linear-
Regulator, Charge-Pumps and High-Current OP
Features
High-Performance Linear Regulator
1.6% Output Accuracy
Works with Small Ceramic Output Capacitors
Fast Transient Response
Foldback Current Limit
High-Current Operational Amplifier:
12V/µs Slew Rate
12MHz, -3dB Bandwidth
Rail-to-Rail Inputs/Output
100mA Negative Charge Pump Regulator
50mA Positive Charge Pump Regulator with
Adjustable Delay
Built-In Power-Up Sequence
Gate-on Pulse Modulator for Sequence & Dis-
charge Control
Thermal Protection
Latched Fault Protection with Timer
TQFN4X4-24 Package
General Description
G5535 incorporates a high-performance linear regula-
tor, two low-power charge-pump regulators, a high-
current operational amplifier, and logic-controlled
gate-on pulse modulator to control the positive
charge-pump output sequence and waveform.
The linear regulator generates the source-driver sup-
ply voltage from the input voltage directly. The two
charge-pump regulators generate the positive gate-on
and negative gate-off supply voltages. The operational
amplifier supplies the VCOM buffer with high output
current, fast slew rate and wide bandwidth perform-
ances for driving capacitive loads. The gate-on pulse
modulator control (SWCTL) is independent of the
SHDN chip enable control.
The G5535 adopts a 24-pin TQFN package which is
4mm
×
4mm with a maximum thickness of 0.8mm for
ultra-thin LCD panel application.
Applications
LCD Monitor Panel Modules
LCD TV Panel Modules
Ordering Information
ORDER
NUMBER
MARKING
TEMP.
RANGE
-40°C to 85°C
PACKAGE
(Pb free)
TQFN4X4-24
G5535R51U
5535
Note: R5: TQFN4X4-24
1: Bonding Code
U: Tape & Reel
Pin Configuration
AGOTP
21
23 FBN
FBL
20
SWCTL
19
18
17
Thermal
Pad
16
15
14
13
10
11
12
7
8
9
VPS
DLP
22
GON
DRN
REF
POSOP
INL
NEGOP
1
2
3
4
5
6
24
SHDN
FBP
THR
VDDOP
OUTOP
GND
VDDCP
SWN
VCC
G5535 TQFN4X4-24
OUTL
SWP
NC
Ver: 0.1
Jun 04, 2008
TEL: 886-3-5788833
http://www.gmt.com.tw
1
GMT [ GLOBAL MIXED-MODE TECHNOLOGY INC ]
