The MIC2289C-34YD6 is a high-efficiency synchronous boost regulator manufactured by Micrel (now Microchip). It is designed to provide a stable output voltage from a lower input voltage, making it suitable for battery-powered applications and other systems where voltage step-up is required. This regulator features high efficiency and low quiescent current, maximizing battery life. It integrates a synchronous rectifier, which reduces power losses and improves overall performance.

Applications

• Battery-Powered Devices: Used in mobile phones, tablets, and other portable devices to boost battery voltage.
• LED Backlighting: Employed in LCD backlighting systems to provide the necessary voltage for LED drivers.
• Power Banks: Incorporated into power banks to boost the battery voltage to a higher level for charging other devices.
• Handheld Instruments: Used in handheld test and measurement equipment for stable voltage regulation.
• Wearable Devices: Found in smartwatches, fitness trackers, and other wearable devices.

Features

• High Efficiency: Achieves high efficiency through synchronous rectification.
• Low Quiescent Current: Minimizes power consumption in standby mode.
• Adjustable Output Voltage: Output voltage can be adjusted using external resistors.
• Internal Compensation: Simplifies the design and reduces external component count.
• Overtemperature Protection: Includes overtemperature protection to prevent damage from overheating.
• Short-Circuit Protection: Provides short-circuit protection to prevent damage from output shorts.

Benefits

• Extended Battery Life: High efficiency and low quiescent current extend battery life in portable devices.
• Stable Output Voltage: Provides a stable output voltage even with varying input voltage and load conditions.
• Simplified Design: Internal compensation reduces the need for external components and simplifies the design process.
• Reliable Operation: Over temperature and short-circuit protection enhance reliability.
• Compact Size: Small package size allows for use in space-constrained applications.

Additional Details

The MIC2289C-34YD6 operates from a wide input voltage range, typically 2.5V to 5.5V. The output voltage can be adjusted using external resistors. The switching frequency is typically in the MHz range, allowing for small external components. The device includes a soft-start feature to limit inrush current during startup. The MIC2289 series is known for its high performance and reliability in demanding battery-powered applications. The compact package options make it easy to integrate into small devices.