ADP2108AUJZ-1.8-R7

The ADP2108AUJZ-1.8-R7 is a high efficiency low quiescent current step-down DC-to-DC Converter 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. It 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. It includes an internal power switch and synchronous rectifier for minimal external part count and high efficiency. It has an internal soft start and is internally compensated.

• Uses tiny multilayer inductors and capacitors
• Current mode architecture for fast load and line transient response
• Internal synchronous rectifier
• Internal compensation
• Internal soft start
• Current overload protection
• Thermal shutdown protection
• Supported by ADIsimPower™ design tool
• 95% Peak efficiency
• 100% Duty cycle low dropout mode