MAX8710 Datasheet, PDF (1/25 Pages) Maxim Integrated Products – Low-Cost, Linear-Regulator LCD Panel Power Supplies

19-3174; Rev 1; 10/05
EVAALVUAAILTAIOBNLEKIT
Low-Cost, Linear-Regulator
LCD Panel Power Supplies
General Description
The MAX8710/MAX8711/MAX8712/MAX8761 offer com-
plete linear-regulator power-supply solutions for thin-film
transistor (TFT) liquid-crystal-display (LCD) panels used
in LCD monitors and LCD TVs. All four devices include a
high-performance AV_DD linear regulator, a positive
charge-pump regulator, a negative charge-pump regula-
tor, and built-in power-up sequence control. The
MAX8710/MAX8711/MAX8761 also include a high-cur-
rent operational amplifier. Additionally, the MAX8710/
MAX8761 provide logic-controlled high-voltage switches
to control the positive charge-pump output.
The linear regulator directly steps down the input voltage
to generate the supply voltage for the source-driver ICs
(AV_DD). 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), and
wide bandwidth (12MHz). Its rail-to-rail inputs and output
maximize flexibility.
The MAX8710/MAX8761 are 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 package. All three packages are 4mm x 4mm
with a maximum thickness of 0.8mm for ultra-thin LCD
panel design. The MAX8710/MAX8711/MAX8712 oper-
ate over the -40°C to +100°C temperature range and the
MAX8761 operates over the -40°C to +85°C range.
Applications
LCD Monitor Panel Modules
LCD TV Panel Modules
Pin Configurations
Features
♦ 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
(MAX8710/MAX8711/MAX8761)
±150mA Output Short-Circuit Current
12V/µs Slew Rate
12MHz, -3dB Bandwidth
Rail-to-Rail Inputs/Output
♦ Dual-Mode™ High-Voltage Switches
(MAX8710/MAX8761)
♦ Thermal Protection
♦ Latched Fault Protection with Timer
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
PKG
CODE
MAX8710ETG+
-40°C to +100°C
24 Thin QFN
4mm x 4mm
T2444-4
MAX8711ETE+
-40°C to +100°C
16 Thin QFN
4mm x 4mm
T2444-4
MAX8712ETC+
-40°C to +100°C
12 Thin QFN
4mm x 4mm
T2444-4
MAX8761ETG+ -40°C to +85°C
24 Thin QFN
4mm x 4mm
T2444-4
+Denotes lead-free package.
Minimum Operating Circuit
IN
TOP VIEW
18 17 16 15 14 13
CTL 19
FBL 20
MODE 21
DLP 22
FBN 23
SRC 24
+
MAX8710
MAX8761
123 4 56
12 N.C.
11 DRVP
10 DRVN
9 SUPCP
8 OUTL
7 IN
THIN QFN 4mm x 4mm
Pin Configurations continued at end of data sheet.
Dual Mode is a trademark of Maxim Integrated Products, Inc.
REF
VGOFF
AVDD
VCOM
CTL
IN
GND
INL
REF
OUTL
FBL
FBN MAX8710
MAX8761
VIN
SUPCP
SHDN
DRVN
DLP
DRVP
POSB
AVDD
SUPB
FBP
OUTB
SRC
NEGB
MODE
GON
DRN
CTL
THR
AVDD
VP
VGON
REF
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