The MIC2290 is a high-efficiency PWM boost regulator manufactured by Micrel (now part of Microchip Technology). It is designed to provide a regulated output voltage from a lower input voltage. The MIC2290 is ideal for portable applications such as cell phones, PDAs, and other battery-powered devices. Its high switching frequency allows for small external components, and its internal compensation reduces the total component count.

Applications:

• Cell Phones: Boost regulator for powering various circuits in cell phones.
• PDAs: Used to generate regulated voltage from battery sources.
• Portable Media Players: Provides a stable voltage supply for components such as LCD screens and audio amplifiers.
• GPS Devices: Powers the GPS receiver and other components.
• Handheld Instruments: Suitable for generating the required voltage in various handheld instruments.

Features:

• High Efficiency: Typically achieves high efficiency in voltage boost applications.
• Internal Compensation: Simplifies design and reduces the number of external components required.
• High Switching Frequency: Allows for the use of small external components.
• Over-Voltage Protection (OVP): Protects the output from over-voltage conditions.
• Short-Circuit Protection: Protects the device from damage in case of a short circuit.

Benefits:

• Extended Battery Life: High efficiency leads to longer battery life in portable devices.
• Simplified Design: Internal compensation simplifies design and reduces component count.
• Compact Solution: High switching frequency allows for smaller external components, resulting in a compact solution.
• Protection Against Damage: Over-voltage and short-circuit protection safeguard the device and other components.
• Stable Voltage Supply: Provides a stable and accurate output voltage, ensuring reliable operation of connected devices.

Specifications:

The MIC2290 typically operates with an input voltage range of 2.5V to 10V and can provide an output voltage up to 34V. The switching frequency is typically 1.2MHz. The device is commonly available in a small surface-mount package such as MLF-10.