Microchip | MIC2570-2YM

The MIC2570-2YM 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 1.3 V and 15 V. Its typical no-load supply current is 130 µA.

The MIC2570 is available in selectable fixed output or adjustable output versions. The MIC2570-1 can be configured for 2.85 V, 3.3 V, or 5 V 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 36 V, using an external resistor network.

Features:

• Operates from a two-cell supply
• 1.3 V to 15 V operation
• 130µA typical quiescent current
• Complete regulator fits 0.6 in2 area
• 2.85 V/3.3 V/5 V selectable output voltage (MIC2570-1)
• Adjustable output up to 36 V (MIC2570-2)
• 1 A current limited pass element
• Frequency synchronization input
• 8-lead SOIC package

Applications:

• LCD bias generator
• Glucose meters
• Single-cell lithium to 3.3 V or 5 V converters
• Two-cell alkaline to ±5 V converters
• Two-cell alkaline to –5 V converters
• Battery-powered, hand-held instruments
• Palmtop computers
• Remote controls
• Detectors
• Battery Backup Supplies