The ADP2108 series high efficiency, low quiescent current step-down DC-to-DC Converter manufactured in two different packages. The total solution requires only three tiny external components. It uses a proprietary, high speed current mode, constant frequency PWM control scheme for excellent stability and transient response. To ensure the longest battery life in portable applications, the ADP2108 has a power save mode that reduces the switching frequency under light load conditions. This runs on input voltages of 2.3 to 5.5V, which allows for single lithium or lithium polymer cell, multiple alkaline or NiMH cell, PCMCIA, USB and other standard power sources. The maximum load current of 600mA is achievable across the input voltage range. The ADP2108 is available in fixed output voltages of 3.3, 3V, 2.5, 2.3, 1.82, 1.8, 1.5, 1.3, 1.2, 1.1 and 1V. All versions include an internal power switch and synchronous rectifier for minimal external part count and high efficiency.
● Uses tiny multilayer inductors and capacitors
● Current mode architecture for fast load and line transient response
● 100% duty cycle low dropout mode
● Internal synchronous rectifier
● Internal compensation
● Internal soft-start
● Current overload protection
● Thermal shutdown protection
● 95% Peak efficiency
