ROHM BD6592MUV LED Driver Technical Note

BD6592MUV is a high efficiency white LED driver IC with PWM step-up DC/DC converter that can boost max 42.5V and current driver that can drive max 40mA. The wide and precision brightness can be controlled by external PWM pulse.


ROHM BD6592MUV LED Driver Technical Note - cover page
Brand
ROHM
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
26
File format
PDF
File size
827 KB
Published
04 June, 2012
Updated
30 September, 2023
MD5 checksum
55667AE53734194922A64BA5F0BAF606

About this manual

The BD6592MUV is a white LED driver IC with a PWM step‑up DC/DC converter designed for medium to large LCD backlights. It can boost up to 42.5 V and drive up to 40 mA per LED, offering precise brightness control via external PWM.

Key features include high efficiency (up to 93 %), a wide 2.7 V‑22 V input range, 6‑channel current drivers with tight matching, and safety functions such as over‑voltage protection, over‑current limit, external SBD open detection and thermal shutdown. The small 4 × 4 × 1 mm package suits space‑constrained designs.

What's inside

  • Description
  • Features
  • Applications
  • Absolute Maximum Ratings
  • Electrical Characteristics
  • Block Diagram and I/O Equivalent Circuit
  • Pin Assignment
  • Application Example
  • Safety Functions
  • Ordering Information

Specifications

Input voltage range2.7 V – 22 V
Maximum efficiency93 %
Switching frequency1 MHz
Package size4.0 × 4.0 × 1.0 mm
LED strings supportedUp to 12 in series, 6 strings parallel (72 LEDs)

Frequently asked questions

What is the maximum input voltage for the BD6592MUV?

The device can operate with an input voltage up to 22 V.

How many LEDs can be driven by the BD6592MUV?

It can drive up to 12 LEDs in series and 6 strings in parallel, for a total of 72 white LEDs.

What is the typical switching frequency of the converter?

The converter operates at a typical switching frequency of 1 MHz.

What safety functions are built into the BD6592MUV?

It includes over‑voltage protection, over‑current limit, external SBD open detection, and thermal shutdown.

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