MIC2571-2BMM is a micropower boost switching regulator that operates from one alkaline, nickel-metal-hydride cell, or lithium cell.
The MIC2571-2BMM accepts a positive input voltage between 0.9V and 15V. Its typical no-load supply current is 120µA.
The MIC2571-2BMM is available in selectable fixed output or adjustable output versions. The MIC2571-1 can be configured for 2.85V, 3.3V, or 5V by connecting one of three separate feedback pins to the output. The MIC2571-2 can be configured for an output voltage ranging between its input voltage and 36V, using an external resistor network.
The MIC2571-2BMM has a fixed switching frequency of 20kHz. An external SYNC connection allows the switching frequency to be synchronized to an external signal.
The MIC2571-2BMM requires only four components (diode, inductor, input capacitor and output capacitor) to implement a boost regulator. A complete regulator can be constructed in a 0.3 in² area.
All versions are available in an 8-lead MSOP with an operating range from -40°C to +85°C.
Feature
- Operates from a single-cell supply
- 0.9V to 15V operation
- 120µA typical quiescent current
- Complete regulator fits 0.3 in² area
- 2.85V/3.3V/5V selectable output voltage (MIC2571-1)
- Adjustable output up to 36V (MIC2571-2)
- 1A current limited pass element
- Frequency synchronization input
- 8-lead MSOP package
