ISL6420BIRZ-TK

Frequency - Switching:	100kHz ~ 1.4MHz
Base Part Number:	ISL6420B
Supplier Device Package:	20-QFN-EP (4x4)
Package / Case:	20-VFQFN Exposed Pad
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable, Frequency Control, Phase Control, Power Good, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	96%
Series:	--
Voltage - Supply (Vcc/Vdd):	5.6 V ~ 28 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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ISL6420BIRZ-TK is a high-performance, high-efficiency and low-input voltage synchronous, buck-switching voltage regulator that operates from an input voltage of 3 V to 5.5 V, making it well-suited for use in a wide range of battery-powered, signal processing and industrial applications.The ISL6420BIRZ-TK is a non-isolated integrated circuit (IC) specifically designed to boost the performance of portable systems while maintaining excellent system efficiency, providing very low output voltage ripple and superior load-transient response. It integrates a high-efficiency synchronous buck converter with adjustable switching frequencies up to 1.2 MHz and input quiescent current of typically 0.3 mA in 1.2 V step-down mode and typically 0.1 mA in 2.5 V, 5 V step-down modes.The ISL6420BIRZ-TK also features a variety of features and functions such as adjustable output voltage from 1.2 - 5 V, automatic voltage tracking, programmable soft start and protection, programmable loop compensation as well as Integrated Voltage Position Monitor (IVPM) low-current mode, sequential modes, and low-jitter phase control.The ISL6420BIRZ-TK is an ideal solution for powering multi-core applications with mixed voltages and for powering devices powered by internal Li-Ion and other battery chemistries, providing reliable and robust operation with no external components needed. It can also be used in other applications requiring low-current and low-dropout (LDO) operation of signal/power supply circuits.The working principle of the ISL6420BIRZ-TK is based on the synchronous buck topology. The basic configuration consists of four components: an input voltage, an inductor, a switch, and an output capacitor. When the switch is turned on, the input voltage is applied to the inductor and the output voltage is developed across the output capacitor. The voltage across the output capacitor is regulated by changing the duty cycle, or the on-time, of the switch. This method of controlling the output voltage is known as pulse width modulation (PWM).When the switch is turned off, energy that was stored in the inductor is transferred through the switch to the output capacitor. The output voltage is then regulated by controlling the on-time, or duty cycle, of the switch. During each cycle, the inductor is alternately charged and discharged, and the output voltage is regulated based on the switch\'s on-time and the output capacitor\'s charge.The ISL6420BIRZ-TK has a wide range of applications such as high-performance, battery-powered systems such as portable and wearable electronics, mobile phones, and laptops as well as industrial power supplies and DC-DC converters. It can also be used in automotive and other vehicle electronic systems, video game consoles and monitors.In summary, the ISL6420BIRZ-TK is a high-performance, high-efficiency, and low-input voltage synchronous buck-switching voltage regulator that operates from an input voltage of 3 V to 5.5 V, making it well-suited for use in a wide range of battery-powered, signal processing and industrial applications. It integrates a high-efficiency synchronous buck converter with adjustable switching frequencies up to 1.2 MHz and input quiescent current of typically 0.3 mA. It features a variety of features and functions such as adjustable output voltage from 1.2 - 5 V, automatic voltage tracking, programmable soft start and protection, programmable loop compensation, Integrated Voltage Position Monitor (IVPM) low-current mode, sequential modes, and low-jitter phase control. The ISL6420BIRZ-TK is ideal for powering multi-core applications with mixed voltages and for powering devices powered by internal Li-Ion and other battery chemistries. It can also be used in other applications requiring low-current and low-dropout (LDO) operation of signal/power supply circuits.

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