LED light sources have rapidly spread in many automotive applications. With its efficient LED light source drive technology, ROHM has built a broad lineup of LED drivers for taillights, backlights and headlamps. Here, you will be introduced to the LED driver for the backlight.
In recent years, in the field of vehicle-mounted displays, in order to meet the requirements of hazardous substances, CCFL backlights using mercury are being rapidly replaced by LED backlights.
In addition, various in-vehicle displays such as instrument panels, car navigation, audio display, and rear seat entertainment are developing in a diversified and large-scale direction. Under this trend, the demand for increasing the number of LED lamps and high brightness and high dimming rate is increasing. In order to meet this trend of increasing the number of LED lamps, ROHM will realize a high-voltage step-up DC/DC converter, a multi-lamp driving low-power LED, and a high-light-adjusting current driver circuit built into one. The chip expands the lineup of LED driver products.
Next, the LED driver BD81A34EFV-M for backlights developed by ROHM will be introduced.
The BD81A34EFV-M is roughly composed of three functional blocks: a DC/DC converter unit, a current driver unit, and a protection circuit unit (Fig. 1).
Product features:
â– Good heat dissipation
--Blade design of copper alloy contacts,good conductivity
â– Super high impact resistance and thermal stability
--Cover pans are made of high quality polycarbonate
â– Chemical corrosion resistance
-- Corrosion resistant galvanized mounting bracket
â– Grounding.Connection mode
--One-piece grounding design
---Lateral screw connection,suitable for #14AWG soft copper wire,
hard copper wire
â– Security
â– Security doors designed to prevent people accidental exposure
Mechanical characteristics
â– Mechanical life
--Plug provided 5000 times with no load,continuous flashing
Toggle Switch UL,Mini Toggle Switch UL,Waterproof Toggle Switch UL,Electrical Toggle Switch UL
Hoojet Electric Appliance Co.,Ltd , https://www.hoojetgfci.com