ROHM LED Manual

This is an LED manual released by Rohm company. It mainly introduces various characteristics data of LED, including relative luminous intensity, temperature, current, etc.


ROHM LED Manual - cover page
Brand
ROHM
Category
LED Driver Controller
Document type
Product Leaflet
Language
English
Pages
20
File format
PDF
File size
998 KB
Published
13 October, 2023
Updated
13 October, 2023
MD5 checksum
A047CED3E6CED9EC4C7AC9F7E3079D2A

About this manual

This document provides technical data for ROHM LEDs, including characteristics such as relative luminous intensity versus forward current and ambient temperature, as well as derating curves. It details the relationship between peak current and pulse width to prevent flickering and explains the location of the chip within the package relative to viewing angles.

The manual also defines luminous intensity and flux, provides thermal resistance (Rth) values based on PCB size and material, and outlines chromaticity classification methods for mixed lighting RGB LEDs.

What's inside

  • Characteristics data
  • Reliability Data
  • Luminous intensity criteria
  • Location of Chip
  • Viewing angle
  • Luminous intensity and Luminous flux
  • Rth (Thermal resistance)
  • LED operation circuit
  • Flow Temperature Profile
  • Reflow Temperature Profile

Specifications

Recommended Pulse Frequencyover 100Hz
Thermal Resistance Measurement ConditionFR4, single side PCB t=0.8mm, Cu thickness 0.035mm

Frequently asked questions

What is the recommended frequency to prevent LED flickering?

To prevent the LED lights from flickering, it is recommended to use a frequency over 100Hz.

What is the recommended minimum frequency to prevent LED flickering?

To prevent the LED from flickering, the manual recommends using a frequency of over 100 Hz.

How much higher can the maximum pulse current be compared to the DC limit?

The maximum pulse current can be 5 times bigger than the maximum DC current.

What are the specific currents required to make the SMLVN6RGB LED appear white?

To make the SMLVN6RGB LED white, you must apply 12 mA to the red, 15 mA to the green, and 12 mA to the blue.

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