ADP3025

The ADP3025 is a highly efficient dual synchronous buck switching regulator controller optimized for converting the battery or adapter input into the system supply voltages required in notebook computers. The ADP3025 uses a dual-mode PWM/Power Saving Mode architecture to maintain efficiency over a wide load range. The oscillator frequency can be programmed for 200 kHz, 300 kHz, or 400 kHz operation, or it can be synchronized to an external clock signal of up to 600 kHz.

The ADP3025 provides accurate and reliable short circuit protection using an internal current sense circuit, which reduces cost and increases overall efficiency. Other protection features include programmable soft-start, UVLO, and integrated output undervoltage/overvoltage protection. The ADP3025 contains a linear regulator controller designed to drive an external N-channel MOSFET or NPN transistor. The linear regulator output is adjustable, and can be used to generate the auxiliary voltages required in many laptop designs.