Microchip Technology MIC2290BML-TR Step-Up (Boost) Converter

The MIC2290BML-TR from Microchip Technology is a high-efficiency, 1.2MHz fixed-frequency, pulse-width modulating (PWM), synchronous boost converter. This integrated circuit is designed to provide a compact and efficient solution for portable electronics requiring higher voltage outputs from lower voltage sources, such as single-cell lithium-ion batteries. The MIC2290BML-TR is particularly suitable for applications in mobile phones, PDAs, digital cameras, and other portable devices where space and power efficiency are critical.

With a wide input voltage range of 2.5V to 10V, the MIC2290BML-TR is versatile and can accommodate various power sources. Its output voltage can be adjusted up to 34V, making it an ideal choice for driving white LEDs, OLED displays, and other high-voltage applications. The device can deliver up to 1.2A of output current, ensuring sufficient power for a range of uses.

The MIC2290BML-TR features internal synchronous rectification, which enhances efficiency by eliminating the need for an external Schottky diode. This internal feature helps to reduce the overall component count and saves on board space. The device also includes a unique adaptive mode control that combines the benefits of both PWM and PFM modes, optimizing efficiency over a wide range of load conditions.

For protection, the MIC2290BML-TR incorporates various safety features, including under-voltage lockout (UVLO), thermal shutdown, and current limit protection. These features ensure the longevity and reliability of both the converter and the end application. Furthermore, the device has a very low quiescent current, which is crucial for battery-powered applications where extending battery life is of utmost importance.

The MIC2290BML-TR is offered in a compact 10-pin 3x3mm MLF® package, which is highly suitable for space-constrained applications. Its small footprint, combined with its high-frequency operation, allows for the use of tiny, low-cost capacitors and inductors, further reducing the overall solution size.

With its combination of features, the MIC2290BML-TR is an excellent choice for designers looking to maximize power efficiency and minimize space in their high-voltage boost applications.