What the 1kHz output and 26 mA supply tell you
The HV859MG-G: The 1 kHz output frequency is the lamp drive waveform — this is not a variable-frequency drive but a fixed-frequency EL driver designed for backlighting or decorative panels. The 26 mA supply current at 1.8–5 V input means the driver's own draw is modest, but the actual lamp current depends on the external inductor and capacitor values in the boost stage. The 8-MSOP package (3.00 mm width) keeps the footprint small — suitable for space-constrained portable or handheld designs.