Tuesday, April 24, 2018
Publication Date: 12/1/2008
Archive >  December 2008 Issue >  New Products > 

Dual-Output LED Driver from Rohm
White LED drivers for automotive displays.
Novi, MI — Rohm Electronics has introduced the BD8113EFV-E2, a white LED driver IC designed to provide constant current drive for white LED backlights in medium- to large-format automotive TFT-LCD displays. This dual-channel driver is capable of up to 150mA constant current per channel with current-mode buck/boost DC/DC control.

According to the company, the driver ensures constant display brightness, even with unstable battery input voltages, working over the entire automotive temperature range. The buck/boost

configuration also frees up the restriction on the number of LEDs that can be connected in series. Additional features include a maximum input voltage of 36V (supply voltage range: 5 to 30V) and a wide operating temperature range (-40 to +105°C).

The driver IC is offered in a Pb-free HTSSOP-B24 (heat-sink TSSOP) package. Built-in protection functions include undervoltage lockout (UVLO), overvoltage protection (OVP), thermal shutdown (TSD), over current protection (OCP) and short-circuit protection (SCP). Inputs are provided for brightness modulation via PWM or VDAC control. According to the company, LEDs perform much better under cold temperatures than CCFLs, making them suitable for automotive systems such as instrument clusters, infotainment displays, and

multifunction display systems that incorporate multiple functions like radio, navigation and HVAC. The new driver is design-optimized for these demanding automotive applications.

The driver, when combined with the company's SMLK15W high heat dissipation white LEDs, reportedly provide the optimal solution for medium- to large-sized automotive TFT LCD applications.

Contact: Rohm Electronics USA, 26800 Meadowbrook, Suite 120, Novi, MI 48377-3540 248-348-9920 E-mail: mleinonen@rohmelectronics.com Web:

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