The TPS65150 offers a very compact and small power supply solution that provides all three voltages required by thin film transistor (TFT) LCD displays. With an input voltage range of 1.8 V to 6.0 V the device is ideal for notebooks powered by a 2.5-V or 3.3-V input rail or monitor applications with a 5-V input voltage rail. Additionally the TPS65150 provides an integrated high current buffer to provide the VCOM voltage for the TFT backplane.
Two regulated adjustable charge pump driver provide the positive VGH and negative VGL bias voltages for the TFT. The device incorporates adjustable power on sequencing for VGL as well as for VGH. This avoids any additional external components to implement application specific sequencing. The device has an integrated high voltage switch to isolate VGH.
The same internal circuit can also be used to provide a gate shaping signal of VGH for the LCD panel controlled by the signal applied to the CTRL input. For highest safety the TPS65150 has an integrated adjustable shutdown latch feature to allow application specific flexibility. The device monitors the outputs (Vs, VGL, VGH); and, as soon as one of the outputs falls below its power good threshold, the device enters shutdown latch, after its adjustable delay time has passed by.
|Vin (Min) (V)|
|Vin (Max) (V)|
|Operating Temperature Range (C)|
|Approx. Price (US$)|
|Medium Form Factor|
|1 OpAmp - Unity Gain|
|-40 to 85|
| 24HTSSOP |
|1.05 | 1ku|
|Sample & Buy|
|Automotive||TPS65150-Q1||Q100 devices qualified for high-reliability automotive applications targeting zero defects|