General Description
The MAX1748/MAX8726 triple-output DC-DC converters in a low-profile TSSOP package provide the regulated voltages required by active-matrix, thin-film transistor (TFT) liquid-crystal displays (LCDs). One high-power DC-DC converter and two low-power charge pumps convert the +3.3V to +5V input supply voltage into three independent output voltages.
The primary 1MHz DC-DC converter generates a boosted output voltage (VMAIN) up to 13V using ultra-small inductors and ceramic capacitors. The low-power BiCMOS control circuitry and the low on-resistance (0.35Ω) of the integrated power MOSFET allows efficiency up to 93%.

FEATUREs
♦ Three Integrated DC-DC Converters
♦ 1MHz Current-Mode PWM Boost Regulator
   Up to +13V Main High-Power Output
   ±1% Accuracy
   High Efficiency (93%)
♦ Dual Charge-Pump Outputs
   Up to +40V Positive Charge-Pump Output
   Down to -40V Negative Charge-Pump Output
♦ Internal Supply Sequencing
♦ Internal Power MOSFETs
♦ +2.7V to +5.5V Input Supply
♦ 0.1µA Shutdown Current
♦ 0.6mA Quiescent Current
♦ Internal Soft-Start
♦ Power-Ready Output
♦ Ultra-Small External Components
♦ Thin TSSOP Package (1.1mm max)

APPLICATIONs
   TFT Active-Matrix LCD Displays
   Passive-Matrix LCD Displays
   PDAs
   Digital Still Cameras
   Camcorders