MAX1748EUE+T

The MAX1748EUE+T is a triple output TFT-LCD DC-DC converter in 16 pin TSSOP package. It provide 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 (0.35ohm) of the integrated power MOSFET allows efficiency up to 93%. The dual charge pumps independently regulate one positive output (VPOS) and one negative output (VNEG). IC soft-starts each supply as soon as the previous supply finishes. It is used in TFT active-matrix LCD displays, passive-matrix LCD displays, PDAs, digital still cameras and camcorders.

• Supply voltage range is 2.7V to 5.5V
• Operating temperature range from -40°C to 85°C
• 3 integrated DC-DC converters, internal supply sequencing & internal power MOSFETs
• 1MHz current-mode PWM boost regulator, up to +13V main high-power output, ±1% accuracy
• High efficiency of 93%, dual charge-pump outputs, up to +40V positive charge-pump output
• Down to -40V negative charge-pump output
• 0.1µA shutdown current, 0.6mA quiescent current, internal soft-start & power-ready output
• Ultra-small external components

Applications

Power Management, Portable Devices

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party