MAX1676EUB+T

The MAX1676EUB+T is a compact and high-efficiency step-up DC-DC converter designed by Analog Devices (formerly Maxim Integrated). It features an internal synchronous rectifier, eliminating the need for an external Schottky diode and reducing component count and cost. The device operates with a low quiescent supply current of just 16µA and a logic-controlled shutdown feature that draws only 0.1µA.

The input voltage range is from 0.7V to VOUT, with guaranteed start-up from 1.1V inputs. The output voltage can be preset to 3.3V or 5V, or adjusted to any voltage between 2V and 5.5V using two external resistors. It offers high efficiency, reaching up to 94% at 200mA output current. The MAX1676 also includes a low-battery detector (LBI/LBO) and features an adjustable current limit and circuitry to reduce inductor ringing.

This converter is housed in a small 10-pin µMAX package, making it suitable for space-constrained applications. The surface-mount package facilitates automated assembly processes. Its design is well-suited for battery-powered devices and portable electronics where power efficiency and small size are critical.

Applications include pagers, wireless phones, medical devices, hand-held computers, PDAs, and RF tags. The adjustable current limit allows for optimization to reduce ripple, and the low-noise, anti-ringing feature contributes to cleaner signal integrity in sensitive circuits.