The SP7683 is a high efficiency four channel charge pump LED driver from Sipex Corporation. It can drive up to 4 white LEDs with matching currents. Based on the supply headroom available for the four precision current sinks, SP7683 automatically switches between 1X and 1.5X modes.
The SP7683 is a high‑efficiency charge‑pump LED driver that regulates up to four white LEDs with matching currents. It automatically switches between 1X and 1.5X modes to maintain efficiency across a wide input voltage range and includes soft‑start, over‑current, over‑voltage, and thermal shutdown protections.
Key features include a 2.7 V‑5.5 V input range, 1.2 MHz switching frequency, programmable LED drive capability, PWM dimming control, and a compact 16‑pin QFN package. The device is intended for portable electronics such as smartphones, PDAs, digital cameras, and MP3 players.
| Input Voltage Range | 2.7 V to 5.5 V |
|---|---|
| Quiescent Current | 70 µA typ |
| Shutdown Current | 0.5 µA |
| Switching Frequency | 1.2 MHz |
| Maximum Load Current | 200 mA |
| Package | 16‑pin QFN (4 mm × 4 mm) |
The device operates from 2.7 V to 5.5 V input voltage.
It can drive up to four LEDs with matching currents, and an additional four LEDs can be connected in parallel to the VOUT pin.
The driver includes output over‑voltage protection, thermal shutdown at 140 °C, and a low‑power shutdown mode.
It is supplied in a 16‑pin QFN package measuring 4 mm × 4 mm.