ISL6251AHAZ-T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Multi-Chemistry
Number of Cells:	2 ~ 4
Current - Charging:	Constant - Programmable
Programmable Features:	--
Fault Protection:	Over Temperature, 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:	24-SSOP (0.154", 3.90mm Width)
Supplier Device Package:	24-QSOP
Base Part Number:	ISL6251

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ISL6251AHAZ-T Application Field and Working Principle

ISL6251AHAZ-T is a Battery Charger controller which belongs to the PMIC – Battery Chargers family. It was designed by Intersil Corporation to provide overcharge and overdischarge protection while supplying power to the battery. By integrating this device into the system, the charging/discharging behavior of the battery can be regulated with efficiency, accuracy, and safety. ISL6251AHAZ-T offers an AC/DC or DC/DC step-down converter, which is a type of switched-mode power supply (SMPS). It is essentially a high-efficiency voltage regulator, which comprises of switching components that regulate the DC voltage output available from a given input source. This type of power supply is used in applications where input voltages can be fluctuating and where extremely efficient regulation is required. ISL6251AHAZ-T comes with a wide range of integrated features, like an adjustable LDO regulator, an adjustable shunt regulator, an instrumentation amplifier and a 12-bit DAC - all of which are designed with ultra-low power consumption in mind. It also offers variable soft start and trickle charging options. It is highly integrated, delivering up to 3.1A charging current and is compatible with Lithium-ion and Nickel-metal Hydride batteries. The over-discharge (OD) and over-charge (OC) protection functions embedded into ISL6251AHAZ-T monitors the battery voltage of the system and will shut down the charging process once the safety thresholds are exceeded. It also offers temperature protection and countermeasure functions which help ensure the safety and longevity of the batteries. The working principle of ISL6251AHAZ-T is based on the SMPS module it incorporates. When the device is connected to an input source, the SMPS module is used to convert the voltage and current provided by the source into a regulated, constant voltage and current, which is what provides power to the battery. The built-in ADC, DAC and shunt circuit are used to measure and monitor the output voltage and current of the system, as well as adjust the charging/discharging behavior of the battery accordingly. In addition to the basic functions, ISL6251AHAZ-T has several other features which provide enhanced safety and increased flexibility in system design. These include the ability to select either internal or external voltage references and a "charge current cycle count" feature, which users can use to set how often the charge current cycle count should occur.Overall, ISL6251AHAZ-T is a reliable and efficient device, perfectly suited for applications that require precise voltage regulation and efficient power management. Its wide range of integrated features makes it an ideal choice for use in battery-based systems in automotive, consumer and industrial applications.

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