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EC6585-2-Channel Charge Pump Supply for TFT-LCD

General description

The   EC6585   is   a   high   perfomance charge pump  converter  to  generate positive and negative  voltage  supply  optimized  for  small  to medium size thin-film transistor(TFT) liquid crystal displays (LCD’s). The positive charge-pump controller provides 2x positive output voltage PAVDD  and fixed  -1x ratio of negative  voltage  NAVDD  to  supply  the TFT LCD. To   minimize   the   inrush   current   a   built-in   soft start circuit sets the soft start period.

The  EC6585  is  convinient  to  use  and  requires only  5  small  and  low-cost  ceramic  capacitors.It is availiable in the TDFN-12L    package    which reduces  board  size  and  make  the  FPC  or  PCB layout design easier.

Features

l

l   2.5V to 4.5V Input Supply  

l   Positive Output Voltage Range 4.5V to 6V

l   Negative Output Voltage Range -4.5V to -6V

l   Support x2 Positive Voltage Charge Pump

l   Negative Voltage Charge Pump Follow x(-1) Positive Output Voltage

l   Up to 90% power conversion Efficiency

l   Up to 100mA output current

50mA Output Current Capability @VIN=2.8V

80mA Output Current Capability @VIN=3.3V

100mA Output Current Capability @VIN=3.7V

l   Build-in Soft-Start to Reduce Inrush Current

l   Cycle by Cycle Input Current Limit Protection

l   Small 12-pin 2.4mm*1.5mm*0.45mm TDFN Package

l   RoHS Compliant and Halogen Free

 

Applications

l   Smart Phone TFT LCD Bias Power Supply

l   Tablet TFT LCD Bias Power Supply

l   Car Navigation Display

l   Portable equipment

Pin Configurations

Ordering info

Typical Applications circuit

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