ISL6406IV-T

Frequency - Switching:	100kHz ~ 715kHz
Base Part Number:	ISL6406
Supplier Device Package:	16-TSSOP
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable, Frequency Control, Phase Control
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	96%
Series:	--
Voltage - Supply (Vcc/Vdd):	2.97 V ~ 3.63 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

ISL6406IV-T is an integrated high-voltage, high-performance, synchronous step-down switching regulator that features an internal 4.5-A high-side MOSFET, adjustable voltage output and adaptive on-time control. It offers the performance and low quiescent current required in power management architectures used in a variety of embedded systems, including automotive, industrial, telecom, networking and consumer electronics applications.

Application field

The ISL6406IV-T is a high-performance, low-dropout DC-DC step-down switching regulator optimized for high efficiency, low noise and fast transient response. It is designed for applications in embedded systems, where both cost and performance are critical. It is ideal for powering high-performance FPGAs, digital signal processors, embedded microprocessors, low-power devices and battery-operated systems.

Working principle

The ISL6406IV-T is designed to step-down an input voltage from 8V to 0.8V with a wide output voltage range of 0.6V - 6V (adjustable). It utilizes a synchronous rectification with a low quiescent current and extremely low output voltage droop. It features an integrated 4.5A high-side MOSFET, a fast turn-on delay, adaptive on-time control, output current monitor and two levels of overcurrent protection. The ISL6406IV-T features a constant on-time control architecture that eliminates the complexity of classical slope compensation control methods, while providing improved transient response and superior performance. Its adaptive control adjusts the internal oscillator dynamically to optimize the efficiency of the system over a wide range of loads and conditions.The ISL6406IV-T is equipped with advanced protection functions, such as over-current, over-voltage and over-temperature protection, and is certified with AEC-Q100 for automotive applications. It is available in a compact 16-contact QFN package that provides high power density and excellent thermal performance, making it suitable for space-constrained applications.

Conclusion

The ISL6406IV-T is a high-performance, low-dropout DC-DC step-down switching regulator optimized for high efficiency, low noise and fast transient response. It is designed for a variety of applications, including automotive, industrial, telecom, networking, and consumer electronics. It utilizes a synchronous rectification with a low quiescent current, adaptive on-time control, and two levels of overcurrent protection. The ISL6406IV-T is certified with AEC-Q100 for automotive applications, and comes in a compact 16-contact QFN package that provides high power density and excellent thermal performance.

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