ISL9200IRZ-T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Battery Chemistry:	Lithium-Ion
Number of Cells:	--
Current - Charging:	--
Programmable Features:	--
Fault Protection:	Over Current, Over Temperature, Over Voltage
Charge Current - Max:	--
Battery Pack Voltage:	--
Voltage - Supply (Max):	6.5V
Interface:	--
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	12-VFDFN Exposed Pad
Supplier Device Package:	12-DFN (4x3)
Base Part Number:	ISL9200

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Introduction

Power Management Integrated Circuit (PMIC) - Battery Chargers are becoming increasingly popular in a variety of domestic and industrial applications. The ISL9200IRZ-T from Intersil Corporation is a single-cell Li-Ion/Li-Polymer battery charger with a built-in low-dropout (LDO) linear regulator that allows for charging at a constant voltage, constant current, or in pre-charge mode. This PMIC is optimized for portable applications such as toys, handheld gaming systems, and MP3 players.

Application Field

The ISL9200IRZ-T is designed to charge a single-cell, Li-Ion or Li-Polymer battery. The charger features an adjustable built-in low-dropout linear regulator, which enables the device to charge the battery at a fixed current and voltage that can be selected by the system designer. The integrated controller and status bits allow for monitoring of charge status and progress, and also provide protection against charging faults and cell over-temperature issues. The ISL9200IRZ-T has several features that make it attractive to a variety of end-applications. Firstly, its high input voltage range enables use in portable applications of up to 6.5V. Additionally, its compact size and low operating current (less than 10mA when in operation) make it conducive for space-constrained designs. Finally, the device’s fast-charge capability allows for a full charge of a Li-Ion/Li-Polymer battery within three to five hours.

Working Principle

The ISL9200IRZ-T is a stand-alone battery charger, and uses a constant voltage/constant current (CV/CC) control-loop architecture. When the device is first turned on, it starts in pre-charge mode with a low voltage, constant current-limit set. Once the battery voltage approaches the peak voltage for the selected charge profile, the device switches to constant voltage mode and maintains the battery voltage over its charging cycle. The ISL9200IRZ-T uses Intersil\'s "P3" charge cycle algorithm, which charges the battery with a low-voltage constant current and then switches to a constant-voltage phase. This helps protect the battery from over-voltage and over-heating and offers some protection against over-charging. Additionally, the device monitors the cell temperature during charging, and prevents over-charging if the cell temperature exceeds a predetermined level.

Conclusion

The ISL9200IRZ-T is a single-cell Li-Ion/Li-Polymer battery charger designed specifically for portable applications. It features a high input voltage range, a small size, and fast charging capabilities. The device utilizes Intersil’s P3 charge cycle algorithm, which helps ensure safe and efficient battery charging. With its wide variety of features, the ISL9200IRZ-T is suitable for many portable applications, including toys, handheld gaming systems, and MP3 players.

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