MAX1542 Selling Leads, Price trend, MAX1542 DataSheet download, circuit diagram from SeekIC.com

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 ...

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SeekIC No. : 004409018 Detail

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...

MAX1542 Data Sheet

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Part Number:: MAX1542
Supply Ability:: 5000

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1~5000

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Upload time: 2024/11/27

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Product Details

Description

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)

Application

Notebook Computer Displays
LCD Monitor Panels
PDAs
Car Navigation Displays

Pinout

Connection Diagram

Specifications

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 (T_A = +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

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 (V_COM) 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

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