19-3174; Rev 0; 1/04
Low-Cost Linear-Regulator
LCD Panel Power Supplies
General Description
Features
The MAX8710/MAX8711/MAX8712 offer complete lin-
ear-regulator power-supply solutions for thin-film tran-
sistor (TFT) liquid-crystal-display (LCD) panels used in
LCD monitors and LCD TVs. All three devices include a
high-performance AVDD linear regulator, a positive
charge-pump regulator, a negative charge-pump regu-
lator, and built-in power-up sequence control. The
MAX8710 and MAX8711 also include a high-current
operational amplifier. Additionally, the MAX8710 pro-
vides logic-controlled high-voltage switches to control
the positive charge-pump output.
♦ High-Performance Linear Regulator
1.6% Output Accuracy
Works with Small Ceramic Output Capacitors
Fast Transient Response
Foldback Current Limit
♦ 50mA Negative Regulated Charge Pump
♦ 20mA Positive Regulated Charge Pump with
Adjustable Delay
♦ Built-In Power-Up Sequence
♦ High-Current Operational Amplifier
The linear regulator directly steps down the input volt-
age to generate the supply voltage for the source-driver
ICs (AVDD). The two built-in charge-pump regulators
are used to generate the TFT gate-on and gate-off sup-
plies. The high-current operational amplifier is typically
used to drive the LCD backplane (VCOM) and features
high output current (150mA), fast slew rate (12V/µs),
(MAX8710/MAX8711)
±150mA Output Short-Circuit Current
12V/µs Slew Rate
12MHz, -3dB Bandwidth
Rail-to-Rail Inputs/Output
♦ Dual-Mode™ High-Voltage Switches (MAX8710)
♦ Thermal Protection
®
and wide bandwidth (12MHz). Its Rail-to-Rail inputs
and output maximize flexibility.
♦ Latched Fault Protection with Timer
The MAX8710 is available in a 24-pin thin QFN package,
the MAX8711 is available in a 16-pin thin QFN package,
and the MAX8712 is available in a 12-pin thin QFN pack-
age. All three packages are 4mm x 4mm with a maximum
thickness of 0.8mm for ultra-thin LCD panel design. They
operate over the -40°C to +100°C temperature range.
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX8710ETG -40°C to +100°C 24 Thin QFN 4mm x 4mm
MAX8711ETE -40°C to +100°C 16 Thin QFN 4mm x 4mm
MAX8712ETC -40°C to +100°C 12 Thin QFN 4mm x 4mm
Applications
LCD Monitor Panel Modules
Minimum Operating Circuit
LCD TV Panel Modules
IN
Pin Configurations
IN
GND
REF
INL
OUTL
FBL
REF
AVDD
TOP VIEW
FBN
MAX8710
SUPCP
SHDN
DRVP
VIN
GON
DRN
REF
1
2
3
4
5
6
18 SHDN
17 FBP
VGOFF
AVDD
DRVN
DLP
16 THR
15 SUPB
14 OUTB
POSB
SUPB
VP
MAX8710
POSB
INL
AVDD
FBP
SRC
OUTB
VCOM
13
NEGB
GND
NEGB
MODE
GON
DRN
VGON
REF
CTL
CTL
THR
THIN QFN 4mm x 4mm
Pin Configurations continued at end of data sheet.
Rail-to-Rail is a registered trademark of Motorola, Ltd. Dual Mode is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.