EG501 is a single-channel 5mA-90mA linear constant current driving output chip, which integrates the reference voltage source and current driving circuit, saves the inductor and boost capacitor and other energy storage devices, avoids the influence of switch noise on the system, and greatly reduces the PCB board space and simplifies the system design.
The EG501 is a single‑channel linear constant‑current LED driver covering 5 mA to 90 mA output with a wide supply range of 1.6 V to 5.5 V. It integrates a reference voltage source and current‑drive circuitry, eliminating the need for external resistors or inductors and offering low static current (≈50 µA) and high load/power‑supply regulation.
The manual provides pin definitions, a block diagram, typical application circuits, electrical limits, and design guidelines for high‑voltage LED arrays, PWM dimming, and parallel/series configurations. Package dimensions are listed on the final page. This manual is written in Chinese.
| Supply voltage range | 1.6 V – 5.5 V |
|---|---|
| Output current range | 5 mA – 90 mA |
| Static current | ≈50 µA |
| Load regulation | 1 %/V |
The EG501 operates with a supply voltage from 1.6 V up to 5.5 V.
It can deliver a constant current between 5 mA and 90 mA per channel.
A PWM signal applied to the VCC pin acts as an output‑enable, varying the LED current between zero and the set current according to duty cycle.
Yes, up to four EG501 devices can be placed in series as long as the total voltage per chip does not exceed 6 V, allowing operation from 12 V‑24 V supplies.