MAX17500AAUB+

Introduction to MAX17500AAUB+

The MAX17500AAUB+ is a synchronous step-down DC-DC switching controller designed for high-power applications. It provides synchronous operation with up to 18A current drive capability. This device includes high-frequency operation, internal slope compensation, and a high-efficiency synchronous architecture. The voltage regulator provides an adjustable output voltage range of 0.6V to 6.5V. The internal switching frequency of the device can be adjusted from 200kHz to 2.4MHz using a single resistor.

Overview

The MAX17500AAUB+ integrates a digital control loop, on-die synchronous FETs, a PWM controller, a slope compensation network, an error amplifier, and other features required for a high-efficiency step-down switching regulator. This device is available in a compact, 7 mm × 7 mm, 24-pin TQFN package for space-sensitive applications. It is compatible with 1.8 V/2.5 V/3.3 V/5.0 V logic and can operate over a 4.5 V to 17V input voltage range. The voltage regulator allows the user to set the output voltage to the precise value with 0.5V of resolution. The output voltage is adjustable over an adjustable output voltage range of 0.6V to 6.5V.

Principle of Operation

The MAX17500AAUB+ is an adaptive switching regulator that takes an input voltage and uses an internal PWM controller to accurately control the output voltage. The switching frequency is programmed through a R programmed pin. The efficiency of the device is maximized by reducing the conduction and switching losses of the DC-DC converter. The adaptive regulator reduces switching losses by maintaining peak current utilization across all load conditions. The device is optimized for high-efficiency conversion ofinput voltage ranging from 4.5 V to 17V to a fixed output voltage of 0.6V to 6.5V.

Features and Benefits

• Wide Input Voltage Range: 4.5V Undervoltage Lockout, Stream Light Load Efficiency and Real Time PFM Mode.
• Wide Output Voltage Range: 0.6V to 6.5V with +/- 0.5V Output Voltage Accuracy.
• High Output Current: Up to 18A Output.
• Scalable Output Voltage: Allows Precise Voltage Regulation with POT.
• High Efficiency: Synchronous Rectification, Adaptive Control Loop and 8mΩ Internal FETs.
• Low Noise: 0.1μA Standby Current, >50dB Ripple Rejection, and GPIO Enable Shutdown.
• Compact Package: 7mm × 7mm, 24-pin TQFN.

Application Field

The MAX17500AAUB+ DC-DC controller is ideally suited for high-end portable, telecommunications, networking and industrial power applications. The device is suitable for powering high current and high frequency systems such as LTE and LTE Advanced modems, switch mode power supplies, servers, distributed power systems, and other applications requiring high-efficiency and high-power conversion.

Conclusion

The MAX17500AAUB+ is a high-efficiency, synchronous step-down DC-DC switching controller designed for high-power applications. It offers an adjustable output voltage range of 0.6V to 6.5V and up to 18A current drive capability. This device includes high-frequency operation, internal slope compensation, and a high-efficiency synchronous architecture. It is suitable for powering high current and high frequency systems such as LTE and LTE Advanced modems, switch mode power supplies, servers, distributed power systems, and other applications requiring high-efficiency and high-power conversion.