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 logic controlled, high-voltage switch with adjustable delay. The MAX1543 includes an additional high-voltage load switch and features pin-selectable boost regulator switching frequency.

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)

Applications
   Notebook Computer Displays
   LCD Monitor Panels
   PDAs
   Car Navigation Displays