Housed in a 48-pin QFP, the R2A50106FT LED driver IC powers white LEDs used in backlight systems. Its on-chip constant-current driver block offers eight NMOS transistors with high-voltage tolerance and low on resistance, so a single R2A50106FT device can produce an LED drive current up to 160 mA without the need for external power MOSFETs.
Two brightness adjustment functions are provided to enable fine-grained light-level adjustment: PWM brightness adjustment (12-bit PWM duty control enabling 4,096 gradations) and analog brightness adjustment (8-bit constant-current value setting with 256 gradations). Protection features include LED open detection, LED shorted detection, overheating detection, dc/dc converter output overvoltage detection, and dc/dc converter output overload detection. ($2 — available now.)
By Christina Nickolas
Renesas Electronics America , Santa Clara , CA
Sales 800-366-9782
am.renesas.com
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