The ILC6360 step-up/step-down DC-DC converter is a switch mode converter, capable of supplying up to 500mA output current, at a fixed or user selectable output voltage. The range of input, and output voltage options makes the ILC6360 ideal for Lithium-ion (Li-ion) , or any other battery application, where the input voltage range spans above and below the regulated output voltage. When ILC6360's input voltage exceeds the output voltage by more than 800mV, the output will begin to track the input linearly. Configured as a 300kHz, fixed frequency PWM boost converter, the ILC6360 performs the buck operation by seamlessly switching to PFM, when the output voltage rises near the positive range of regulation. However, since the transition point between PWM and PFM mode is dependent upon both line, and load regulation, under certain conditions, regulation will remain in PWM mode even in the buck mode of operation. The ILC6360 is unconditionally stable with no external compensation; the sizes of the input and output capacitors influence the ripple on the input, and output voltages. Since the ILC6360 has an internal synchronous rectifier, the standard fixed voltage version requires minimal external components: an inductor, an input capacitor, and an output capacitor. An additional 10F ceramic output capacitor will help reduce output ripple voltage.