ADP2504ACPZ-4.2-R7 Step-Up/Step-Down DC-DC Converter

The ADP2504ACPZ-4.2-R7 is a high-efficiency, mixed-topology, step-up/step-down DC-DC converter designed and manufactured by Analog Devices Inc. (ADI). This versatile component is engineered to meet the power management requirements of a wide range of battery-powered devices, such as smartphones, tablets, and other portable electronics.

With an input voltage range of 2.3V to 5.5V, the ADP2504ACPZ-4.2-R7 is optimized for single-cell lithium-ion (Li-Ion) or lithium-polymer (Li-Poly) batteries, as well as other standard power sources. It provides a fixed output voltage of 4.2V, making it ideal for maintaining a consistent supply in systems with direct battery connections.

The device incorporates a proprietary high-side MOSFET and a low-side MOSFET to facilitate seamless transition between step-up and step-down modes, ensuring efficient operation across the entire voltage range. The ADP2504ACPZ-4.2-R7 can deliver up to 600mA of output current in step-down mode and up to 500mA in step-up mode, subject to the input voltage and other operating conditions.

One of the key features of this DC-DC converter is its integrated power-save mode, which significantly enhances efficiency at light load conditions. This feature minimizes quiescent current and extends battery life, a critical aspect for portable applications. Additionally, the ADP2504ACPZ-4.2-R7 offers a low shutdown current of less than 1µA, further contributing to the conservation of battery power when the device is not in active use.

The converter comes in a compact, 10-lead LFCSP (Lead Frame Chip Scale Package) with dimensions of 3mm x 3mm, making it suitable for space-constrained applications. The ADP2504ACPZ-4.2-R7 also includes various protection features such as overcurrent protection (OCP), thermal shutdown (TSD), and under-voltage lockout (UVLO), ensuring safe and reliable operation under varying conditions.

Overall, the ADP2504ACPZ-4.2-R7 from Analog Devices Inc. is an excellent choice for designers looking for a flexible, efficient, and compact power management solution for their portable and battery-powered applications.