The TLD5098EL is a LED Multitopology LITIXTM Power DC/DC Controller with built in protection features. The main function of this device is to regulate a constant LED current. The constant current regulation is especially beneficial for LED colour accuracy and longer lifetime. The controller concept of the TLD5098EL allows boost configurations by simply adjusting the external components. Dimming can be achieved with analogue or PWM input. The switching frequency is adjustable in the range of 100 to 500kHz and can be synchronized to an external clock source. The current mode regulation scheme of this device provides a stable regulation loop maintained by small external compensation components. The integrated soft start feature limits the current peak as well as voltage overshoot at start-up. This IC is suited for use in the harsh automotive environments and provides output over-voltage protection, device over-temperature shutdown and short circuit to GND protection.
Constant current or constant voltage regulation
Synchronization with external clock source
PWM dimming
Analogue dimming feature to adjust average LED current
Open circuit detection
Short to GND protection
Output over-voltage protection
Internal soft-start
Over-temperature shutdown
Wide LED current range via simple adaptation of external components
