TPS65149 LCD Bias Solution For LCD Panels Using ASG/GIP Technology | TI.com

TPS65149 (ACTIVE) LCD Bias Solution For LCD Panels Using ASG/GIP Technology

 

Recommended alternative parts

  • TPS65155  -  No Vcom, 6ch level shifter (instead of 8)

Description

The TPS65149 provides a highly integrated LCD bias solution, primarily intended for monitor applications using ASG/GIP technology.

The device integrates a boost converter to generate the source driver supply voltage (VAVDD), positive and negative charge pump controllers to generate gate driver ON (VGH) and OFF (VGL) voltages, a programmable VCOM generator, and an 8-channel level shifter in a single IC. The positive charge pump controller supports temperature compensation to reduce VGH at high temperatures.

In addition to the above functions, the TPS65149 generates two signals to discharge the display panel during power-down, plus an additional active-low XAO reset output.

Supply sequencing during power-up can be controlled by an externally generated enable signal.

Features

  • 3 V to 6 V Input Voltage Range
  • Boost Converter With 4 A Switch Current Limit
  • Boost Converter Output Voltages up to 18 V
  • Boost Converter Overvoltage Protection
  • Selectable Switching Frequency (640 kHz or 1.2 MHz)
  • Programmable Boost Converter Soft-Start
  • Temperature-Compensated Positive Charge Pump Controller
  • Negative Charge Pump Controller
  • Eight Channel Level Shifter
  • Two Panel Discharge Signals
  • XAO Reset Signal
  • Digitally Programmable VCOM Buffer
  • Thermal Shutdown
  • 56-Pin 7×7 mm QFN Package
  • APPLICATIONS
    • LCD Monitors using ASG/GIP Technology

Parametrics

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Part number Order Display type IC integration Vin (Min) (V) Vin (Max) (V) Source driver voltage (Min) (V) Source driver voltage (Max) (V) Level shifter/scan driver (ch) V_POS (Min) (V) V_POS (Max) (V) V_NEG (Min) (V) V_NEG (Max) (V) Special function Topology Type Rating Package size: mm2:W x L (PKG) Package Group
TPS65149 Order now LCD Unipolar     LCD Bias
LCD Level shifter
VCOM    
3     6     7     18     8             VCOM/OpAmp
I2C I/F
Output Discharge
Reset Generator
Level Shifter
Temperature Sensor/Compensation    
        Catalog     56VQFN: 49 mm2: 7 x 7 (VQFN | 56)     VQFN | 56    
TPS65100 Order now LCD Unipolar     LCD Bias
VCOM    
2.7     5.8     5     15     0             VCOM/OpAmp             Catalog     24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
HTSSOP | 24
VQFN | 24    
TPS65120 Order now LCD Unipolar     LCD Bias     2.5     5.5     3     5.6     0     3     20     -18     -1.5     Output Discharge             Catalog     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     VQFN | 16    
TPS65150 Order now LCD Unipolar     LCD Bias
VCOM    
1.8     6       15     0             VCOM/OpAmp
Adjustable Sequencing
GPM/GVS    
        Catalog     24HTSSOP: 34 mm2: 4.4 x 7.8 (HTSSOP | 24)
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
HTSSOP | 24
VQFN | 24    
TPS65640 Order now LCD Bipolar
LCD Unipolar    
LCD Bias
VCOM    
2.5     5.5     -8     12.7     0             Adjustable Sequencing
GPM/GVS
I2C I/F
Output Discharge
Reset Generator
Temperature Sensor/Compensation
VCOM/OpAmp    
        Catalog     28WQFN: 19 mm2: 3.5 x 5.5 (WQFN | 28)     WQFN | 28