MIC2570-1YM is a micropower boost switching regulator that operates from two alkaline, two nickel-metal-hydride cells, or one lithium cell.
The MIC2570-1YM accepts a positive input voltage between 1.3V and 15V. Its typical no-load supply current is 130µA.
The MIC2570-1YM 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 MIC2570-1YM has a fixed switching frequency of 20kHz. An external SYNC connection allows the switching frequency to be synchronized to an external signal.
The MIC2570-1YM requires only four components (diode, inductor, input capacitor and output capacitor) to implement a boost regulator. A complete regulator can be constructed in a 0.6 in² area.
All versions are available in an 8-lead SOIC with an operating range from -40°C to +85°C.
Feature
- Operates from a two-cell supply
- 1.3V to 15V operation
- 130µA typical quiescent current
- Complete regulator fits 0.6 in² area
- 2.85V/3.3V/5V selectable output voltage (MIC2570-1)
- Adjustable output up to 36V (MIC2570-2)
- 1A current limited pass element
- Frequency synchronization input
- 8-lead SOIC package
