ISL9519QHRTZ-T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Battery Chemistry:	Lithium-Ion
Number of Cells:	1 ~ 3
Current - Charging:	--
Programmable Features:	--
Fault Protection:	Short Circuit
Charge Current - Max:	8A
Battery Pack Voltage:	--
Voltage - Supply (Max):	22V
Interface:	I²C
Operating Temperature:	-10°C ~ 100°C (TA)
Package / Case:	28-WFQFN Exposed Pad
Supplier Device Package:	28-QFN (4x4)
Base Part Number:	ISL9519

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The ISL9519QHRTZ-T is an integrated battery charger module from Intersil. It can be used to provide highly efficient, low cost, and fast charging for 3.7V lithium-ion and 1S/2S NiMH battery packs. The device is small, lightweight, and can operate either as a step-up or a buck-boost depending on the user’s requirements. This makes it an ideal solution for design engineers working on space-constrained applications.The ISL9519QHRTZ-T is designed with an optimized architecture that allows it to rapidly charge 1S/2S, 5V (or 6V) input voltage battery pack. It is an integrated charger supporting constant current and constant power charging modes, as well as temperature monitoring and short circuit protection. The device is compatible with high current, low current, and single cell output charger setups.The ISL9519QHRTZ-T features an innovative battery safety switch that allows the module to automatically switch between charging and non-charging modes. This means that the module is able to safely monitor the battery state and disable charging when the battery voltage reaches the maximum level. Additionally, the programmable soft-start feature and adaptive recharge timing helps to ensure accurate and safe battery charging.The device is built using an advanced process technology based on the proven power component design and layout. Additionally, the module includes a low-dropout linear regulator (LDO) and a reverse battery protection circuit. The low standby current and efficient charging algorithm allows the device to provide improved system performance while reducing system power consumption.The ISL9519QHRTZ-T application field and working principle include the following:Application Field The ISL9519QHRTZ-T is ideal for applications such as cell phones, portable media players, handheld GPS systems, and other portable electronics. It can also be used in automotive applications where reliable, high efficiency charging is required.Working PrincipleThe ISL9519QHRTZ-T can operate as a step-up charger or a buck-boost charger, depending on the user\'s requirements. The internal battery safety switch allows the module to protect the battery from overcharge, overvoltage, and temperature related battery faults. The device utilizes an advanced floating charge algorithm to provide improved system performance while ensuring low power dissipation.The ISL9519QHRTZ-T charge operation starts when the input voltage exceeds the undervoltage lockout (UVLO) threshold. This enables the device to enter charging mode. Once the device enters charge mode, an internal voltage regulator and a charging circuit will be activated to control the charging process. The charging circuit monitors the battery voltage and adjusts the charging current as needed to ensure a safe, fast and accurate charging process. The device also features programmable charging termination voltage and adaptive recharge timing to ensure safe and accurate battery charging.In summary, the ISL9519QHRTZ-T is a highly integrated, low-cost, efficient, and reliable battery charger module for use in space-constrained applications. It operates as either a step-up or a buck-boost depending on the user’s requirements, and utilizes a floating charge algorithm for improved system performance. The device also includes a battery safety switch, programmable soft-start, and temperature monitoring and protection. As such, the ISL9519QHRTZ-T can be used in a wide range of portable electronics including cell phones, portable media players, and handheld GPS systems.

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