The TPS65140-Q1 and TPS65145-Q1 devices offer 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 TPS65140-Q1 device has a typical switch current limit of 2.3 A and the TPS65145-Q1 has a typical switch current limit of 1.37 A.
A fully integrated adjustable charge pump doubler and provides the positive LCD gate-drive voltage. An externally adjustable negative charge pump provides the negative LCD gate-drive voltage.
For compensation of the devices please refer to Application Note: How to Compensate with the TPS6510x and TPS6514x SLVA813.
| Display type | Automotive, LCD unipolar |
| IC integration | LCD bias |
| Vin (min) (V) | 2.7 |
| Vin (max) (V) | 5.8 |
| Applications | 13 to 21 inches, 7 to 13 inches |
| Source driver voltage (min) (V) | 5 |
| Source driver voltage (max) (V) | 15 |
| Level shifter/scan driver (Ch) | 0 |
| V_POS (max) (V) | 30 |
| V_NEG (max) (V) | -2 |
| Topology | Boost |
| Rating | Automotive |
| Operating temperature range (°C) | -40 to 85 |
| HTSSOP (PWP) | 24 | 49.92 mm² 7.8 x 6.4 |
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