BD9470AEFV

Datasheet LED driver series for LCD back light White LED driver for medium sized and large sized LCD back light BD9470AEFV・BD9470AFM ●General Description BD9470AEFV and BD9470AFM are high efficiency driver for white LED. They are designed for large sized LCD. BD9470AEFV and BD9470AFM are built-in DCDC converter that supply appropriate voltage for light source. BD9470AEFV and BD9470AFM are also built-in protection function for abnormal state such as OVP: over voltage protection, OCP: over current limit protection of DCDC, SCP: short circuit protection, open detection of LED string. Thus they are used for conditions of large output voltage and load conditions. ●Features  6ch LED constant current driver  LED maximum output current 250mA  Individual PWM dimming modulation allowed for LEDs  ±2% LED current accuracy (when each LED is set to 130mA)  Built-in LED feedback voltage automatic adjustment circuit according to LED current  Built-in start-up circuit independent of PWM light modulation  built-in VOUT ・ FB voltage maintenance function when PWM=Low（0%）  Built-in LED current stabilization circuit while scanning operation is performed  Built-in VOUT discharge circuit while shutdown  Built-in LED protection (OPEN / SHORT protection)  Individual detection and individual LED OFF for both open and short circuit  Adjustable LED short-circuit protection threshold  PWM-independent LED protection  VOUT over voltage protection (OVP) and reduced voltage protection (SCP) c...