MAX1626ESA

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The MAX1626ESA is a DC-DC switching controller IC that combines high efficiency with low quiescent current and high accuracy. This integrated circuit is designed to reduce power consumption in applications such as Central Processing Units (CPUs), Digital Signal Processors (DSPs), Field-Programmable Gate Arrays (FPGAs), microcontrollers, and memories. It has a variety of features that make it suitable for a wide range of applications.

Application Field

The MAX1626ESA is primarily used in microelectronic systems to regulate the output voltage from a switching power supply. In addition to its primary use as a DC-DC switching controller, the MAX1626ESA can also be used as a voltage regulator for DC/DC applications. Examples include:

• High current supplies for regulating the output voltage of a switching power supply.
• Applications requiring very accurate output voltage regulation.
• Power supply sequencing solutions.
• DC/DC applications with tight load and line transient requirements.

Working Principle

The MAX1626ESA operates using a pulse-width modulation (PWM) technique to generate a regulated DC output voltage. A frequency-locked loop (FLL) is used to make the switching frequency of the internal power switches independent of the voltage applied to the input of the IC. This ensures that a constant output voltage is maintained regardless of changes in input voltage. This allows the MAX1626ESA to be used in power supply applications with varying input voltage.

The MAX1626ESA incorporates advanced housekeeping circuitry to ensure optimal performance. This includes an adjustable under-voltage lockout (UVLO) circuit and over-temperature protection. The UVLO can be adjusted to protect the output voltage from reaching unacceptable levels if it is applied to a low voltage input. The over-temperature protection ensures that the IC shuts down when the internal temperature exceeds a certain threshold.

The MAX1626ESA is one of the newest generations of PWM DC-DC controllers and has been widely adopted in power supply applications. It has proven to provide significant energy reductions when used in microelectronic systems. Its combination of high efficiency, low quiescent current, and high accuracy make it an ideal choice for voltage regulation applications.

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