EL7640, EL7641, EL7642 are high-performance TFT-LCD DC/DCs, integrated with 2 LDO controllers and adjustable delay VON-slice circuit, and one (EL7640), three (EL7641) or five amplifiers (EL7642) for VCOM and VGAMMA applications.
The EL7640, EL7641 and EL7642 are TFT‑LCD DC/DC converters that integrate a boost regulator, two LDO controllers and up to five rail‑to‑rail amplifiers. They are supplied in a 32‑lead thin QFN package and are qualified for operation from –40 °C to +85 °C.
The document provides absolute maximum ratings, electrical specifications, pin descriptions, typical performance curves, layout recommendations and package outline drawings for designers who need a compact, high‑efficiency power solution for LCD panels, notebooks and TVs.
| Input Supply Range (VIN) | 2.6 V – 5.5 V |
|---|---|
| Boost Regulator Output Voltage | 18 V |
| Efficiency | > 90 % |
| Package | 32 Ld 5 × 5 mm thin QFN (Pb‑free) |
| Operating Temperature Range | -40 °C to +85 °C |
| Amplifier Supply Current per Amplifier | 600 µA – 800 µA |
The devices operate with an input supply voltage between 2.6 V and 5.5 V.
The boost regulator achieves greater than 90 % efficiency.
They are offered in a 32‑lead 5 mm × 5 mm thin QFN package that is Pb‑free.
The specified operating temperature range is –40 °C to +85 °C.