National LM3501 User's Manual
Summary
This dedicated synchronous step-up DC/DC converter is an ideal power solution for driving white LED backlighting in portable, handheld, and display applications. Featuring high efficiency, integrated switching controls, and robust over-voltage protection, it reliably powers multiple LEDs from low input voltages (2.7V–7V). The manual provides engineering details, including connection diagrams, technical specifications, and complete application guides needed for seamless integration into complex lighting systems, ensuring maximum performance and total circuit isolation when powering critical white LED networks.
Manual Details
| Brand | National |
|---|---|
| Pages | 18 |
| File Size | 1022.35 KB |
| Published | May 29, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
How many white LEDs can the LM3501 drive in a series circuit?
It is designed to drive 2-5 white LEDs in series.
What methods are available for adjusting the LED current or brightness?
You can vary the analog control voltage on pin A3 (CNTRL) or use a PWM signal on the shutdown pin.
What protection is provided if the main white LED network is disconnected?
The device uses internal circuitry to prevent destructive overvoltage and maintains total isolation.