Purchase MAX1542, In-stock MAX1542 From SeekIC.
Part Number: MAX1542
Description: The MAX1542/MAX1543 include a high-performance boost regulator and two high-current operational amplif...
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MAX1542
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DataSheet
General Description
MAX1542 General Description
The MAX1542/MAX1543 include a high-performance boost regulator and two high-current operational amplifiers for active matrix, thin-film transistor (TFT), liquidcrystal displays (LCDs). Also included is a logiccontrolled, high-voltage switch with adjustable delay. The MAX1543 includes an additional high-voltage load switch and features pin-selectable boost regulator switching frequency.
The step-up DC-to-DC converter is a high-frequency 640kHz (MAX1543)/1.2MHz (MAX1542/MAX1543) current-mode regulator with a built-in power MOSFET that allows the use of ultra-small inductors and ceramic capacitors. It provides fast transient response to pulsed loads while producing efficiencies over 85%.
The two easy-to-use, high-performance operational amplifiers can drive the LCD backplane (VCOM) and/or the gamma correction divider string. The devices feature high short-circuit current (150mA), fast slew rate (7.5V/µs), wide bandwidth (12MHz), and Rail-to-Rail® inputs and outputs.
The MAX1542/MAX1543 are available in 20-pin thin QFN packages with a maximum thickness of 0.8mm for ultra-thin LCD panel design.
MAX1542 Maximum Ratings
IN, CTL, COMP, FB, DEL, FREQ (MAX1543)
to AGND ..............................................................-0.3V to +6V
COMP, FB, DEL to AGND ..............................-0.3V to (IN + 0.3V)
PGND to AGND .................................................................±0.3V
LX to PGND ..........................................................-0.3V to +14V
SUP, POS1, NEG1, OUT1, POS2,
NEG2, OUT2 to AGND .........................................-0.3V to +14V
POS1, NEG1, OUT1, POS2, NEG2,
OUT2 to AGND .........................................-0.3V to (SUP + 0.3V)
SRC, COM to AGND................................................-0.3V to +30V
SRC to COM...........................................................-0.3V to +30V
SRC to DRN (MAX1543).........................................-0.3V to +30V
COM to AGND ............................................-0.3V to (SRC + 0.3V)
DRN (MAX1543) to AGND............................-0.3V to (SRC + 0.3V)
DRN (MAX1543) to COM..........................................-30V to +30V
MAX1542 COM RMS Output Current .................................+75mA
MAX1543 COM RMS Output Current .................................±50mA
OUT1, OUT2 Continuous Output Current .........................±75mA
Continuous Power Dissipation (TA = +70°C)
20-Pin Thin QFN 5mm x 5mm
(derate 20.8mW/°C above +70°C) .............................1667mW
Operating Temperature Range ..........................-40°C to +85°C
Junction Temperature ....................................................+150°C
Storage Temperature Range ...........................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
to AGND ..............................................................-0.3V to +6V
COMP, FB, DEL to AGND ..............................-0.3V to (IN + 0.3V)
PGND to AGND .................................................................±0.3V
LX to PGND ..........................................................-0.3V to +14V
SUP, POS1, NEG1, OUT1, POS2,
NEG2, OUT2 to AGND .........................................-0.3V to +14V
POS1, NEG1, OUT1, POS2, NEG2,
OUT2 to AGND .........................................-0.3V to (SUP + 0.3V)
SRC, COM to AGND................................................-0.3V to +30V
SRC to COM...........................................................-0.3V to +30V
SRC to DRN (MAX1543).........................................-0.3V to +30V
COM to AGND ............................................-0.3V to (SRC + 0.3V)
DRN (MAX1543) to AGND............................-0.3V to (SRC + 0.3V)
DRN (MAX1543) to COM..........................................-30V to +30V
MAX1542 COM RMS Output Current .................................+75mA
MAX1543 COM RMS Output Current .................................±50mA
OUT1, OUT2 Continuous Output Current .........................±75mA
Continuous Power Dissipation (TA = +70°C)
20-Pin Thin QFN 5mm x 5mm
(derate 20.8mW/°C above +70°C) .............................1667mW
Operating Temperature Range ..........................-40°C to +85°C
Junction Temperature ....................................................+150°C
Storage Temperature Range ...........................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
MAX1542 Features
Ultra-High-Performance Step-Up Regulator
Fast Transient Response to Pulsed Load Using
Current-Mode Control Architecture
High-Accuracy Output Voltage (1.3%)
Built-In 14V, 1.2A, 0.2Ω N-Channel Power
MOSFET with Lossless Current-Sensing
High Efficiency (85%)
8-Step Current-Controlled Digital Soft-Start
Two High-Performance Operational Amplifiers
150mA Output Short-Circuit Current
7.5V/µs Slew Rate
12MHz -3dB Bandwidth
Rail-to-Rail Inputs/Outputs
Unity Gain Stable
Logic-Controlled High-Voltage Switch with
Adjustable Delay
Timer Delay Latch FB Fault Protection
Thermal Protection
2.6V to 5.5V Input Operating Voltage Range
3.6mA (Switching), 0.45mA (Not Switching) Quiescent Current
Ultra-Thin 20-Pin Thin QFN Package (5mm x 5mm x 0.8mm)
Fast Transient Response to Pulsed Load Using
Current-Mode Control Architecture
High-Accuracy Output Voltage (1.3%)
Built-In 14V, 1.2A, 0.2Ω N-Channel Power
MOSFET with Lossless Current-Sensing
High Efficiency (85%)
8-Step Current-Controlled Digital Soft-Start
Two High-Performance Operational Amplifiers
150mA Output Short-Circuit Current
7.5V/µs Slew Rate
12MHz -3dB Bandwidth
Rail-to-Rail Inputs/Outputs
Unity Gain Stable
Logic-Controlled High-Voltage Switch with
Adjustable Delay
Timer Delay Latch FB Fault Protection
Thermal Protection
2.6V to 5.5V Input Operating Voltage Range
3.6mA (Switching), 0.45mA (Not Switching) Quiescent Current
Ultra-Thin 20-Pin Thin QFN Package (5mm x 5mm x 0.8mm)
MAX1542 Typical Application
Notebook Computer Displays
LCD Monitor Panels
PDAs
Car Navigation Displays
LCD Monitor Panels
PDAs
Car Navigation Displays
MAX1542 Connection Diagram
MAX1542
PDF/DataSheet Download
- Datasheet: MAX1542
- File Size: 419271 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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