BD82103GWL is charge pump type 2 light or 3 light parallel LED driver for the portable instruments. This IC not only ensures efficient boost by automatically changing the boost rate but also works as a constant current driver in 16 steps, so that the driving current can be adjusted finely. This IC is best suited to turn on white LEDs that require high-accuracy LED brightness control.
The BD82103GWL is a charge‑pump type 2‑ or 3‑light parallel LED driver intended for portable instruments. It offers a 16‑step LED current adjustment, high efficiency (over 93 %), and built‑in protections such as over‑voltage and thermal shutdown.
The document includes absolute maximum ratings, electrical characteristics, pin descriptions, block diagrams, and example application circuits for both 2‑light and 3‑light configurations, as well as design notes on PCB layout, power sequencing, and safety considerations.
| Power supply voltage (VMAX) | 7 V |
|---|---|
| Input voltage (Vdin) | GND‑0.3 ~ VBAT+0.3 V |
| Power dissipation (Pd) | 730 mW |
| Operating temperature range | -30 ~ +85 °C |
| LED maximum current (ILED‑max) | 18 ~ 22 mA |
| LED current accuracy (ILED‑diff) | 10 % |
| Low threshold voltage (VIL) | 0.4 V |
| High threshold voltage (VIH) | 1.4 V |
The device can drive up to 18 mA, 20 mA, or 22 mA depending on the selected setting.
It operates from –30 °C to +85 °C.
LED current is set in 16 steps by pulsing the EN pin, which the internal register decodes.