MAX1724EZK30-T

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MAX1724EZK30-T is a DC-DC switching regulator commonly used in electrical power management applications. It provides excellent cost-performance, low quiescent current, and high efficiency. This DC-DC switching regulator is ideal for low noise, low input-capacitance applications, such as cellular phone power management, where space is limited. The MAX1724EZK30-T has been designed to meet the needs of a variety of power regulator solutions.

Application Field:

• Mobile devices such as cellular phones, PDAs, digital cameras, and MP3 players
• Computer systems, including notebook and palmtop PCs
• Battery-powered products
• Automotive applications
• Industrial applications

The MAX1724EZK30-T DC-DC switching regulators are suitable for both buck and boost applications. It offers a wide input voltage range (2.5V to 20V), a high efficiency conversion rate over the entire input voltage range, and a low start-up current (as low as typ. 500uA).

Working Principle:

The MAX1724EZK30-T switching regulator uses a pulse-width modulation (PWM) architecture to achieve high efficiency and excellent transient response. It senses the output voltage and adjusts the power switch’s duty cycle accordingly to keep the output voltage within the specified range. The switching regulator uses the output voltage feedback to regulate the output voltage while adjusting the on-time and off-time of the switch. The MAX1724EZK30-T has an enable control pin that allows for both enable and power-good control. The enable pin also provides a low standby current mode when the enable voltage is less than 1V.

The MAX1724EZK30-T features a programmable current limit that can be adjusted using a resistor, providing an effective means of protection from overloading. It also features a programmable switching frequency that can be adjusted from 300 kHz to 1 MHz. This helps to reduce the noise generated by the switching action.

The MAX1724EZK30-T employs a mode control to select either voltage-mode or current-mode control. Voltage-mode control provides better transient response and steady-state performance, while current-mode control is more suitable for current-limited applications. The MAX1724EZK30-T also includes an adjustable current-limit process to protect the full-load operation.

The MAX1724EZK30-T includes an output voltage sensing pin, which helps to reduce the output voltage ripple and improve the overall output voltage stability. This pin can be used to program the output voltage of the regulator, providing a simple way to adjust the output voltage to match the system requirements.

The MAX1724EZK30-T features an adjustable soft-start circuitry which provides a smooth and controlled startup of the output. This feature helps to minimize the inrush current when the regulator is enabled.

The MAX1724EZK30-T is available in an 8-pin SOIC package, providing a low profile, small footprint solution for space-constrained applications. This package is RoHS compliant and lead-free.

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