TPS65120 4-CH Single Inductor Multiple Outputs (SIMO) Bias IC w/ Fixed 3.3V Vlogic | TI.com

TPS65120 (ACTIVE) 4-CH Single Inductor Multiple Outputs (SIMO) Bias IC w/ Fixed 3.3V Vlogic

 

Description

The TPS6512x DC-DC converter supplies all three voltages required by amorphous-silicon (a-Si) and low-temperature poly-silicon (LTPS) TFT-LCD displays. The compact layout of the TPS6512x uses a single inductor to generate independently-regulated positive and negative outputs. A free-running variable peak current PWM control scheme time-multiplexes the inductor between outputs. This control architecture operates at a pseudo-fixed-frequency to provide fast response to line and load transients while maintaining a relatively constant switching frequency and high efficiency over a wide range of input and output voltages. Due to the high switching frequency capability of the device, inexpensive and ultra-thin 8.2 or 10 µH inductors can be used.

The main output, VMAIN, is post-regulated to provide a low-ripple source drive voltage for the LCD display. The auxiliary outputs generate a boosted output voltage, VGH, up to 20 V, and a negative output voltage, VGL, down to -18 V for the LCD gate drive. The device has internal current limiting for high reliability under fault conditions. Additionally, the device offers a fixed output linear regulator for the LCD logic circuitry.

Features

  • Main Output, VMAIN
    • Adjustable Voltage, 3.0 V to 5.6 V/25 mA
    • Post-Regulated for Low Ripple (5mVPP)
    • ±0.8% Typical Accuracy
    • Efficiency up to 83%
  • Positive Output, VGH
    • Adjustable Voltage up to 20 V/2 mA
    • ±3% Typical Accuracy
  • Negative Output, VGL
    • Adjustable Voltage down to -18 V/2 mA
    • ±3% Typical Accuracy
  • Auxiliary 1.8 V/3.3 V Linear Regulator
  • Automatic or Programmable Power Sequencing
  • Complete 1 mm Component Profile Solution
  • 2.5 V to 5.5 V Input Voltage Range
  • Output Short Circuit Protected
  • 16-Pin QFN Package (3 × 3 × 0,9 mm)
  • APPLICATIONS
    • Small Form Factor a-Si and LTPS TFT LCD
    • Cell Phones, Smart Phones
    • PDAs, Pocket PCs
    • Portable DVD
    • Digital-Still Cameras, Camcorders
    • Handheld Instruments
    • Portable GPS
    • Car Navigation Systems

Parametrics

Compare all products in LCD & OLED display power & drivers Email Download to Excel
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
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    
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    
TPS65121 Samples not available 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    
TPS65123 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    
TPS65124 Order now LCD Unipolar     LCD Bias     2.5     5.5     3     5.6     0     3     20     -18     -1.5     Adjustable Sequencing
Output Discharge    
        Catalog     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     VQFN | 16    
TPS65149 Order now LCD Unipolar