MAX1747 PDF Datasheet


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Description

This is Triple Charge-Pump TFT LCD DC-DC Converter. 19-1788; Rev 0; 10, 00 KIT ATION EVALU LE B A IL A AV Triple Charge-Pump TFT LCD DC-DC Converter General Description MAX1747 Features o Adjustable Outputs Up to +5.5V Main High-Power Output Up to +35V Positive Charge-Pump Output Down to -35V Negative Charge-Pump Output o 200kH- to 2MH- Adjustable Switching Frequency o +2.7V to +4.5V Input Supply o Internal Power MOSFETs o 0.1 A Shutdown Current o Internal Soft-Start o Power-Ready Output o Internal Supply Sequencing o Fast Transient Response o Ultra-Thin Solution (No Inductors) o Thin TSSOP Package (1.1mm max) The MAX1747 triple charge-pump DC-DC converter provides the regulated voltages required by active matrix thin-film transistor (TFT) liquid-crystal displays (LCDs) in a low-profile TSSOP package. One highpower and two low-power charge pumps convert the +2.7V to +4.5V input supply voltage into three independent output voltages. The primary high-power charge pump generates an output voltage (VOUT) between 4.5V and 5.5V that is r.