ISL6256HAZ-T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	2 ~ 4
Current - Charging:	Constant - Programmable
Programmable Features:	--
Fault Protection:	Over Temperature, Over Voltage, Short Circuit
Charge Current - Max:	2.6A
Battery Pack Voltage:	17.64V (Max)
Voltage - Supply (Max):	25V
Interface:	--
Operating Temperature:	-10°C ~ 100°C (TA)
Package / Case:	28-SSOP (0.154", 3.90mm Width)
Supplier Device Package:	28-SSOP/QSOP
Base Part Number:	ISL6256

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Introduction

ISL6256HAZ-T is a battery charger integrated circuit (IC) specifically designed for portable electronic applications. It can operate from a single Li-Polymer battery cell or a Li-Ion battery cell and can supply a current up to 2.5A. It is one of Intersil\'s next-generation, high-efficiency, power management solutions for battery-powered devices. ISL6256HAZ-T is a highly integrated device with a flexible feature set that is optimized for space and energy efficiency. The integrated features of the ISL6256HAZ-T include low quiescent current, output current limit, programmable current limits, and power good indicator. In this article, we will discuss the application field and working principle of the ISL6256HAZ-T.

Application Field

The ISL6256HAZ-T is specifically designed for use in portable electronic applications. It is suitable for a wide range of voltage and current ranges, making it ideal for battery-powered devices such as smartphones, PDAs, digital cameras, and other portable electronic devices. It is a highly efficient device, providing up to 98% efficiency at maximum outputs. The ISL6256HAZ-T supports programmable current limiting and output voltages, making it easy to customize the charger for different applications. Additionally, the ISL6256HAZ-T supports “Power Good” output protection and includes a low quiescent current of 1.5 μA.

Working Principle

The ISL6256HAZ-T utilizes a patented architecture which incorporates a highly efficient synchronous buck regulator and an integrated linear post-regulator. The synchronous buck regulator is used to convert the input voltage to the desired output voltage with minimum energy losses. The output voltage can be programmable for different applications with an adjustable coefficient of 0.6V/V (typical). The buck regulator also includes an integrated low-dropout MOSFET for higher efficiency and improved power capability.The linear post-regulator is used to achieve optimal output voltage accuracy and excellent line and load transient performance. The post-regulator uses a series of high-performance filter components to ensure that the output voltage is regulated and free from any noise or ripple. The post-regulator also includes an internal current limit that can be programmed to limit the maximum output current.

Conclusion

The ISL6256HAZ-T is a highly efficient and integrated battery chargerIC with a flexible feature set, optimized for space and energy efficiency. It is designed for portable electronic applications, and can supply a maximum current up to 2.5A. It features programmable current limits, power good indicator, and low quiescent current, which are beneficial for battery-powered devices. Additionally, the ISL6256HAZ-T uses a patented architecture which combines a highly efficient synchronous buck regulator with an integrated linear post-regulator for optimal output voltage accuracy.

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