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MFG:.  Package Cooled:MAX  D/C:2005+  

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Part Number: MAX1518

 

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Package Cooled: MAX

D/C: 2005+

Description: The MAX1516/MAX1517/MAX1518 include a high-performance step-up regulator, two linear-regulator control...


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MAX1518 General Description


The MAX1516/MAX1517/MAX1518 include 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 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 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 MAX1516/MAX1517/MAX1518 are available in 32 pin thin QFN packages with a maximum thickness of 0.8mm for ultra-thin LCD panels.

MAX1518 Maximum Ratings

IN, CTL to AGND.....................................................-0.3V to +6V
COMP, FB, FBP, FBN, DEL, REF to AGND ....-0.3V to (VIN + 0.3V)
PGND, BGND to AGND.......................................................±0.3V
LX to PGND .........................................................-0.3V to +14V
SUP to AGND .......................................................-0.3V to +14V
DRVP, SRC to AGND.............................................-0.3V to +30V
POS_, NEG_, OUT_ to AGND....................-0.3V to (VSUP + 0.3V)
POS1 to NEG1, POS2 to NEG2, POS3 to NEG3,
  POS4 to NEG4, POS5 to NEG5.................................-6V to +6V
DRVN to AGND....................................(VIN - 30V) to (VIN + 0.3V)
COM, DRN to AGND .................................-0.3V to (VSRC + 0.3V)
DRN to COM...........................................................-30V to +30V
OUT_ Maximum Continuous Output Current ...................±75mA
LX Switch Maximum Continuous RMS Output Current .........1.6A
Continuous Power Dissipation (TA = +70°C)
  32-Pin Thin QFN (derate 21.2mW/°C above +70°C) ..1702mW
Operating Temperature Range .......................-40°C to +100°C
Junction Temperature....................................................+150°C
Storage Temperature Range ..........................-65°C to +150°C
Lead Temperature (soldering, 10s) ...............................+300°C

MAX1518 Features

2.6V to 5.5V 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

MAX1518 Typical Application

Notebook Computer Displays
LCD Monitor Panels
Automotive Displays

MAX1518 datasheet

MAX1518
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