Rainbow Electronics MAX8761 User Manual
General Description
The MAX8710/MAX8711/MAX8712/MAX8761 offer complete 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 AVDD linear regulator, a positive
charge-pump regulator, a negative charge-pump regulator, and built-in power-up sequence control. The
MAX8710, MAX8711, and MAX8761 also include a highcurrent operational amplifier. Additionally, MAX8710 and
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
(AVDD). The two built-in charge-pump regulators
are used to generate the TFT gate-on and gate-off supplies. 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 and 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. They operate over the -40°C to
+100°C temperature range (-40°C to +85°C for
MAX8761).
Applications
LCD Monitor Panel Modules
LCD TV Panel Modules
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
MAX8710/MAX8711/MAX8712/MAX8761
Low-Cost, Linear-Regulator
LCD Panel Power Supplies
________________________________________________________________ Maxim Integrated Products 1
Minimum Operating Circuit
24
23
22
21
20
19
SRC
FBN
DLP
MODE
FBL
CTL
7
8
9
10
11
12
IN
OUTL
SUPCP
DRVN
DRVP
N.C.
131415161718
GND
OUTB
SUPB
THR
FBP
SHDN
654321
NEGB
INL
POSB
REF
DRN
GON
MAX8710/MAX8761
THIN QFN 4mm x 4mm
TOP VIEW
Pin Configurations
Ordering Information
19-3174; Rev 1; 9/05
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.
Pin Configurations continued at end of data sheet.
EVALUATION KIT
AVAILABLE
Dual Mode is a trademark of Maxim Integrated Products, Inc.
PART TEMP RANGE PIN-PACKAGE
M A X8 7 1 0E TG+ -40° C to +100°C 24 Thin QFN 4mm x 4mm
M A X8 7 1 1E TE+ -40° C to +100°C 16 Thin QFN 4mm x 4mm
M A X8 7 1 2E TC+ -40°C to +100°C 12 Thin QFN 4mm x 4mm
M A X8 7 6 1E TG+ -40°C to +85°C 24 Thin QFN 4mm x 4mm
REF
VGOFF
AVDD
VCOM
CTL
IN
IN
AVDD
GND
REF
FBN
MAX8710MAX8761
SUPCP
VIN
DRVN
DLP
POSB
SUPB
OUTB
NEGB
MODE
CTL
INL
OUTL
FBL
SHDN
DRVP
FBP
SRC
GON
DRN
THR
AVDD
VP
VGON
REF
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