7V, 50mW OLED Driver from a 2V to 5.5V input

The LTC3459 controls peak inductor current when VIN is greater than or less than VOUT. This allows current to be controlled during start-up in a boost application or VOUT to be regulated below VIN when powered from a fresh battery. Peak current control makes the LTC3459 an ideal candidate for charging a back-up source such as a SuperCap.