The TPS65140/145 is a triple output LCD supply with linear regulator and power good. The device has a 2.7-V to 5.8-V input voltage range, 1.6-MHz fixed switching frequency, 3 independent adjustable outputs, a main output up to 15 V with less than 1% typical output voltage accuracy, a negative output voltage down to -12 V/20 mA, a positive output voltage up to 30 V/20 mA, an auxiliary 3.3-V linear regulator controller, internal soft start, internal power-on sequencing, fault detection of all outputs, and thermal shutdown.
The TPS65140 and TPS65145 are compact triple‑output LCD power‑supply ICs designed for thin‑film transistor (TFT) LCD displays. They generate a positive, negative, and auxiliary 3.3 V rail from a 2.7 V‑5.8 V input and include a system power‑good output.
Key features include a 1.6 MHz fixed switching frequency, independent adjustable outputs (up to 30 V / 20 mA positive and –12 V / 20 mA negative), internal soft‑start, power‑on sequencing, fault detection, and thermal shutdown. The devices are offered in TSSOP‑24 and QFN‑24 packages and are used in notebook and monitor LCD panels, portable DVD players, tablet PCs, car navigation systems, and industrial displays.
| Input voltage range | 2.7 V to 5.8 V |
|---|---|
| Switching frequency | 1.6 MHz (fixed) |
| Positive output voltage | up to 30 V / 20 mA |
| Negative output voltage | down to –12 V / 20 mA |
| Package types | TSSOP‑24 and QFN‑24 |
| Typical switch current limit (TPS65140) | 2.3 A |
| Typical switch current limit (TPS65145) | 1.37 A |
The devices operate from 2.7 V to 5.8 V input.
They provide a positive output up to 30 V / 20 mA, a negative output down to –12 V / 20 mA, and an auxiliary 3.3 V linear regulator.
Both TSSOP‑24 and QFN‑24 packages are offered.
The switching frequency is fixed at 1.6 MHz.