LT1511ISW#PBF

Series:	--
Packaging:	Tube
Part Status:	Active
Battery Chemistry:	Multi-Chemistry
Number of Cells:	--
Current - Charging:	Constant - Programmable
Programmable Features:	--
Fault Protection:	Over Voltage
Charge Current - Max:	3A
Battery Pack Voltage:	20V (Max)
Voltage - Supply (Max):	28V
Interface:	--
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	24-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	24-SOIC
Base Part Number:	LT1511

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Introduction

PMICs (Power Management ICs) are special purpose ICs specially designed for power management, supplying power to system peripherals and providing convenient power supply for the systems. Among these PMICs, Battery Chargers are power supply ICs that offer reliable charging capacities for charging Li-Ion or Li-Polymer battery packs. The LT1511ISW#PBF is one example of a Battery Charger. This article will discuss the application field and working principle of the LT1511ISW#PBF.

Application Field

The LT1511ISW#PBF is a high performance Battery Charger IC used in charging applications such as Cellular phones, PDAs, and notebook computers. It is an ideal choice for applications where the battery has to be charged in a timely manner, as it is capable of charging Li-Ion and Li-Poly batteries with a very fast 0.6A constant current mode. It has an adjustable output voltage range of 3V to 9V, which allows it to be used in various applications. The LT1511ISW#PBF is designed to work in a very efficient manner, as it is capable of providing excellent charging current accuracy and very low quiescent current drain. As the device can adjust the charging current accuracy with a very low dropout voltage, it is very efficient in its battery charging capabilities. Furthermore, the device also supports a wide range of input voltages, from 4.35V to 6V, making it highly compatible with varying power sources.

Working Principle

The LT1511ISW#PBF works by charging the Li-Ion and Li-Poly battery pack with a constant current at a 0.6A rate. The device constantly monitors the battery voltage and adjusts the charging current accordingly. This ensures that the battery is neither overcharged nor undercharged, thus making the charging process efficient, and allowing the battery to last longer. The device also features an adjustable termination voltage, allowing the battery to be charged to precise voltages such as 3.2V and 4.2V. In addition, the device features an automatic built-in authentication mode, which is capable of identifying and authenticating Li-Ion and Li-Poly batteries during the charging process. This authentication mode helps to ensure the safety of the battery, as any fraudulent battery that is attempted to be charged on the device can be detected. Furthermore, the device also features advanced thermal management, which helps to protect the device from excessive heat caused by heavy charging.

Conclusion

The LT1511ISW#PBF is a high performance and reliable Battery Charger IC that can be used for charging mobile battery packs and other devices. It is designed for applications where efficient and reliable charging is needed, and has low quiescent current drain and high charging current accuracy. The device also supports a wide range of input voltages, as well as adjustable termination voltage, making it ideal for versatile applications. Finally, the device also features an automatic authentication and thermal management mode, which helps to ensure the safety of the battery packs and the device itself.

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