MAX1518 Maxim Integrated Products, MAX1518 Datasheet
MAX1518
Manufacturer Part Number
MAX1518
Description
(MAX1516 - MAX1518) TFT-LCD DC-DC Converters
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX1518.pdf
(26 pages)
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DataSheet U .com
The MAX1516/MAX1517/MAX1518 include a high-perfor-
mance step-up regulator, two linear-regulator controllers,
and high-current operational amplifiers for active-matrix
thin-film transistor (TFT) liquid-crystal displays (LCDs).
Also included is a logic-controlled, high-voltage switch
with adjustable delay.
The step-up DC-DC converter provides the regulated
supply voltage for the panel source driver ICs. The con-
verter is a high-frequency (1.2MHz) current-mode regu-
lator with an integrated 14V 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 85%.
The gate-on and gate-off linear-regulator controllers
provide regulated TFT gate-on and gate-off supplies
using external charge pumps attached to the switching
node. The MAX1518 includes five high-performance
operational amplifiers, the MAX1517 includes three,
and the MAX1516 includes one operational amplifier.
These amplifiers are designed to drive the LCD back-
plane (VCOM) and/or the gamma-correction divider
string. The devices feature high output current
(±150mA), fast slew rate (13V/µs), wide bandwidth
(12MHz), and rail-to-rail inputs and outputs.
The MAX1516/MAX1517/MAX1518 are available in 32-
pin thin QFN packages with a maximum thickness of
0.8mm for ultra-thin LCD panels.
4
19-3244; Rev 0; 4/04
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.
MAX1516ETJ
MAX1517ETJ
MAX1518ETJ
PART
Notebook Computer Displays
LCD Monitor Panels
Automotive Displays
-40 C to +100 C
-40 C to +100 C
-40 C to +100 C
TEMP RANGE
________________________________________________________________ Maxim Integrated Products
Ordering Information
General Description
PIN-PACKAGE
32 Thin QFN 5mm x 5mm
32 Thin QFN 5mm x 5mm
32 Thin QFN 5mm x 5mm
Applications
TFT-LCD DC-DC Converters with
Pin Configurations appear at end of data sheet.
Operational Amplifiers
2.6V to 5.5V Input Supply Range
1.2MHz Current-Mode Step-Up Regulator
Linear-Regulator Controllers for V
High-Performance Operational Amplifiers
Logic-Controlled, High-Voltage Switch with
Adjustable Delay
Timer-Delay Fault Latch for All Regulator Outputs
Thermal-Overload Protection
0.6mA Quiescent Current
Fast Transient Response to Pulsed Load
High-Accuracy Output Voltage (1.5%)
Built-In 14V, 2.4A, 0.16Ω N-Channel MOSFET
High Efficiency (90%)
±150mA Output Short-Circuit Current
13V/µs Slew Rate
12MHz, -3dB Bandwidth
Rail-to-Rail Inputs/Outputs
V
IN
Minimal Operating Circuit
IN
COMP
SRC
COM
DRN
SUP
NEG1
OUT1
POS1
NEG2
OUT2
POS2
OUT3
POS3
OP1
OP2
OP3
V
CN
CONTROLLER
CONTROLLER
GATE-ON
CONTROL
STEP-UP
SWITCH
MAX1518
CONTROLLER
GATE-OFF
BGND
REF
OP4
OP5
LX
PGND
AGND
DRVP
DRVN
NEG4
OUT4
POS4
NEG5
OUT5
POS5
FBP
DEL
CTL
FBN
REF
FB
GON
V
CP
Features
V
MAIN
and V
V
V
V
V
CP
GON
CN
GOFF
GOFF
1
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