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MAX1518B
TFT-LCD DC-DC Converter with Operational Amplifiers
TFT LCD, DC-DC Converter with a High-Performance Step-Up Regulator, Two Linear-Regulator Controllers, and Five High-Current Operational Amplifiers for Active-Matrix Thin-Film Transistor (TFT) Liquid-Crystal Displays (LCDs)
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Status
Active: In Production.
Description
The MAX1518B includes a high-performance 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 converter
is a high-frequency (1.2MHz) current-mode regulator
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 MAX1518B includes five high-performance
operational amplifiers. These amplifiers are designed to
drive the LCD backplane (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 MAX1518B is available in a 32-pin thin QFN package
with a maximum thickness of 0.8mm for ultra-thin
LCD panels.
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Data Sheet
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Key Features
- 2.6V to 6.5V Input Supply Range
- 1.2MHz Current-Mode Step-Up Regulator
- 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%)
- Linear-Regulator Controllers for VGON and VGOFF
- High-Performance Operational Amplifiers
- ±150mA Output Short-Circuit Current
- 13V/µs Slew Rate
- 12MHz, -3dB Bandwidth
- Rail-to-Rail Inputs/Outputs
- Logic-Controlled, High-Voltage Switch with Adjustable Delay
- Timer-Delay Fault Latch for All Regulator Outputs
- Thermal-Overload Protection
- 0.6mA Quiescent Current
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Applications/Uses
- Automotive Displays
- LCD Monitor Panels
- Notebook Computer Displays
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Diagram
 Minimal Operating Circuit
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX1518BETJ+
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Active |
TQFN;32 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0012 (PDF)
Use pkgcode/variation: T3255+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1518BETJ+T
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Active |
TQFN;32 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0012 (PDF)
Use pkgcode/variation: T3255+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-3244
Rev 0;
2005-11-23
This page last modified: 2007-09-04
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