Maxim Integrated MAX1698EUB Product Overview

The MAX1698EUB from Maxim Integrated is a highly efficient, compact, step-up DC-DC converter designed for driving white LEDs. This product is particularly well-suited for portable devices where power efficiency and space are critical considerations. The MAX1698EUB is capable of driving up to three white LEDs in series, ensuring uniform brightness and maximizing battery life.

Key Features

• High Efficiency: The device features a high switching frequency that allows for a small external inductor and capacitors, delivering a typical efficiency of 87%.
• Adjustable Brightness: With a PWM dimming input, the brightness of the LEDs can be easily adjusted, making it perfect for applications that require variable backlighting.
• Low Dropout: The MAX1698EUB operates down to a low input voltage, ensuring continuous operation even as the battery voltage declines.
• Space-Saving Design: This converter comes in a miniature 10-pin µMAX package, which is ideal for space-constrained applications.
• Over-Voltage Protection: The device includes an over-voltage protection feature that limits the output voltage to prevent damage to the LEDs in case of an open circuit.

Applications

The MAX1698EUB is versatile and can be used across various applications, making it an excellent choice for:

• Portable devices such as mobile phones and PDAs
• Handheld medical devices
• Small-screen LCD backlights
• GPS receivers
• Other battery-powered equipment where efficient backlighting is necessary

Technical Specifications

With an input voltage range of 2.7V to 5.5V, the MAX1698EUB is compatible with most battery technologies used in portable devices. The device's quiescent current is only 120µA, which drops to 1µA in shutdown mode, further conserving battery life. The 1.2MHz fixed-frequency PWM control scheme minimizes noise and ripple, ensuring stable operation across various conditions.

In summary, the MAX1698EUB from Maxim Integrated is a robust, efficient, and space-saving solution for LED backlighting in portable devices. Its high efficiency, adjustable brightness, and low-profile packaging make it an essential component for modern electronic designs requiring compact and reliable lighting solutions.