Automotive Electronics

Rohm Develops White LED Driver IC For Automotive Display Backlighting

Rohm Electronics has announced the availability of 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, ensuring constant display brightness, even with unstable battery input voltages 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).

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.

Offered in a lead-free HTSSOP-B24 (heat-sink TSSOP) package, the BD8113EFV-E2 is priced at US$5 each for sample quantities.

Rohm Electronics
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