MAX1748EUE+T

MAXIM INTEGRATED PRODUCTS  MAX1748EUE+T  芯片, 显示器驱动器

The 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.

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Supply voltage range is 2.7V to 5.5V

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Operating temperature range from -40°C to 85°C

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3 integrated DC-DC converters, internal supply sequencing & internal power MOSFETs

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1MHz current-mode PWM boost regulator, up to +13V main high-power output, ±1% accuracy

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High efficiency of 93%, dual charge-pump outputs, up to +40V positive charge-pump output

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Down to -40V negative charge-pump output

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0.1µA shutdown current, 0.6mA quiescent current, internal soft-start & power-ready output

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Ultra-small external components