The SCI7654 is a highly efficient, but low power-consumption DC-to-DC converter based on the advanced CMOS technologies. It can generate an output voltage double/triple/quadruple times higher than the input (in negative direction) if 4/3/2 external capacitors are attached. With a built-in voltage regulator, the SCI7654 can provide a stable output by setting the DC/DC output to any voltage via two external resistors. This is optimum to the LCD panel power supply as the stable output can have the negative temperature gradient required for an LCD panel.
The SCI7654Moa/Coa is a CMOS‑based DC‑to‑DC converter that can boost an input voltage up to four times in the negative direction, making it suitable for LCD panel power supplies. It includes a built‑in voltage regulator and reference voltage circuit for stable output and temperature‑compensated voltage gradients.
Key features include double/triple/quadruple boosting, up to 95 % typical conversion efficiency, a maximum output current of 20 mA during quadruple boosting, low standby current (5 µA max), and selectable package options (SSOP‑16 or DIP‑16). The datasheet also details pin functions, absolute maximum ratings, and example circuits for booster and regulator configurations.
| Typical conversion efficiency | 95 % |
|---|---|
| Maximum output current (quadruple boost) | 20 mA |
| Standby current (max) | 5.0 µA |
| Input voltage range (quadruple boost) | -2.4 V to -5.5 V |
The typical conversion efficiency is 95 %.
The device can deliver up to 20 mA of output current when quadruple boosting.
The standby (low‑power) current is specified as 5.0 µA maximum.
The SSOP version of the SCI7654 uses a 16‑pin package.