BD9489F Description
BD9489F is a high efficiency driver for white LEDs and is designed for large LCDs. BD9489F has a boost DCDC converter that employs an array of LEDs as the light source. BD9489F has some protect functions against fault conditions, such as over-voltage protection (OVP), over current limit protection of DCDC (OCP), LED OCP protection, and Over boost protection (FBMAX).
BD9489F Key Features
- DCDC converter with current mode
- As PWM=L, the retaining function of Vout, FB voltage
- VOUT discharge function at shutdown
- LED protection circuit (Over boost protection, LED
- Over-voltage protection (OVP) for the output voltage
- Adjustable soft start
- Adjustable oscillation frequency of DCDC
- Wide range of analog dimming 0.2V to 3.0V
- UVLO detection for the input voltage of the power