MIC2570
MIC2570 is Two-Cell Switching Regulator manufactured by Micrel Semiconductor.
Micrel, Inc.
Two-Cell Switching Regulator
General Description
Micrel’s MIC2570 is a micropower boost switching regulator that operates from two alkaline, two nickel-metal-hydride cells, or one lithium cell.
The MIC2570 accepts a positive input voltage between 1.3V and 15V. Its typical no-load supply current is 130µA.
The MIC2570 is available in selectable fixed output or adjustable output versions. The MIC2570-1 can be configured for 2.85V, 3.3V, or 5V by connecting one of three separate feedback pins to the output. The MIC2570-2 can be configured for an output voltage ranging between its input voltage and 36V, using an external resistor network.
The MIC2570 has a fixed switching frequency of 20k Hz. An external SYNC connection allows the switching frequency to be synchronized to an external signal.
The MIC2570 requires only four ponents (diode, inductor, input capacitor and output capacitor) to implement a boost regulator. A plete regulator can be...
