TPS65100 4-CH LCD Bias w/ Fully Int. Pos. Charge Pump, 3.3V LDO Contr., 1.6A Min. Boost Ilim, Fault & VCOM | TI.com

TPS65100
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4-CH LCD Bias w/ Fully Int. Pos. Charge Pump, 3.3V LDO Contr., 1.6A Min. Boost Ilim, Fault & VCOM

 

Description

The TPS6510x series offers a compact and small power supply solution that provides all three voltages required by thin film transistor (TFT) LCD displays. The auxiliary linear regulator controller can be used to generate a 3.3-V logic power rail for systems powered by a 5-V supply rail only.

The main output VO1, is a 1.6-MHz, fixed-frequency PWM boost converter providing the source drive voltage for the LCD display. The device is available in two versions with different internal switch current limits to allow the use of a smaller external inductor when lower output power is required. The TPS65100/01 has a typical switch current limit of 2.3 A, and the TPS65105 has a typical switch current limit of 1.37 A. A fully integrated adjustable charge pump doubler/tripler provides the positive LCD gate drive voltage. An externally adjustable negative charge pump provides the negative gate drive voltage. Due to the high 1.6-MHz switching frequency of the charge pumps, inexpensive and small 220-nF capacitors can be used.

The TPS6510x series has an integrated VCOM buffer to power the LCD backplane. For LCD panels powered by 5 V only, the TPS6510x series has a linear regulator controller using an external transistor to provide a regulated 3.3-V output for the digital circuits. For maximum safety, the TPS65100/05 goes into shutdown as soon as one of the outputs is out of regulation. The device can be enabled again by toggling the input or the enable (EN) pin to GND. The TPS65101 does not enter shutdown when one of the outputs is below its power good threshold.

Features

  • 2.7-V to 5.8-V Input Voltage Range
  • 1.6-MHz Fixed Switching Frequency
  • 3 Independent Adjustable Outputs
  • Boost Converter Output Voltage VO1 of up to 15 V With < 1% Output Voltage Accuracy
  • Negative Regulated Charge Pump VO2
  • Positive Charge Pump VO3
  • Integrated VCOM Buffer
  • Virtual Synchronous Converter Technology in Boost Converter
  • Auxiliary 3.3-V Linear Regulator Controller
  • Internal Soft Start
  • Internal Power-On Sequencing
  • Fault Detection of all Outputs (TPS65100/05)
  • No Fault Detection (TPS65101)
  • Thermal Shutdown
  • Available in TSSOP-24 and VQFN-24 PowerPAD™ Packages

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
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    
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    
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