LM3590 Datasheet | National Semiconductor

LM3590 Series White LED Driver November 2003 Series White LED Driver General Description The LM3590 is a White LED constant current driver capable of supplying up to 3 White LEDs connected in series with 20mA. This device operates over a wide 6V-12.6V input voltage range. The output can acodate LEDs with a bined forward voltage of up to 11.5V, from a 12V input supply. The LED drive current is programmed by using an external resistor on the ISET pin. LED brightness can be linearly varied up to the programmed LED current by applying a Pulse Width Modulated (PWM) signal to the EN pin of the device. The LED output current of the LM3590 is tightly controlled over temperature and...