The TK6591x is an electroluminescent (EL) lamp driver optimized for battery controlled systems, offering low power consumption and a small size. The proprietary architecture of the product ensures a constant output power to the lamp, regardless of battery voltage variations. It features internally generated oscillator circuits, a clock frequency laser-trimmed for accuracy, and a drive architecture that limits peak drive current to improve lamp life and reduce RF interference.
The TK6591x electroluminescent (EL) lamp driver is optimized for battery‑controlled systems where power consumption and size are critical. It is offered in a 6‑pin SOT23L‑6 surface‑mount package and works with TOKO miniature EL coils to reduce board space.
The device provides a constant output power independent of battery voltage, laser‑trimmed fixed‑frequency operation, low EMI, and adjustable output voltage. Typical applications include cellular phones, pagers, LCD modules, wrist watches, and other consumer electronics.
| Input Supply Range | 2.7 V – 6 V |
|---|---|
| Peak Current Threshold | 26 mA – 38 mA |
| Lamp Frequency (TK65915) | 300 Hz |
| Oscillator Frequency (TK65915) | 38.4 kHz |
| Converter Supply Current (TK65915) | 5.4 mA – 10.8 mA |
The TK6591x is supplied in a miniature 6‑pin SOT23L‑6 surface‑mount package.
Each part number has a laser‑trimmed lamp frequency; for example, TK65915 is specified at 300 Hz.