LTC4097EDDB#TRMPBF

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	Current
Fault Protection:	--
Charge Current - Max:	1.2A
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	5.5V
Interface:	USB
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	12-WFDFN Exposed Pad
Supplier Device Package:	12-DFN (3x2)
Base Part Number:	LTC4097

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LTC4097EDDB#TRMPBF - PMIC - Battery Chargers

The LTC4097EDDB#TRMPBF is a Battery Charges integrated circuit (IC). This PMIC includes a low dropout (LDO) regulator and an inverting charge pump that provides a power output of 2A at 5.5V. It\'s an all-in-one solution for charging, managing and protecting single-cell Li-ion or Li-ion/Polymer batteries. The LTC4097EDDB#TRMPBF is designed for space-limited applications such as mobile devices, medical devices, and handheld products.

Applications

The LTC4097EDDB#TRMPBF is designed for charging Li-ion and Li-ion/polymer batteries in powering applications such as portable medical devices. Its low quiescent current (less than 50μA) makes it suitable for use in battery-powered devices. The ultra-low dropout regulator of the IC optimizes power efficiency, so it can also be used in portable products such as tablets and mobile phones. Additionally, the IC includes both reverse-current protection and over-temperature protection features.

Working Principle

The LTC4097EDDB#TRMPBF typically comes in a 6-pin TSOT-23 package, and it includes an LDO regulator and an inverting charge pump. The LDO regulator has a quiescent current of less than 50μA, and it can provide a power output of 2A at -1.2V to 5.5V. The LDO regulator can be used to supply power to the rest of the circuit, and its low quiescent current makes it suitable for use in low-power applications. The charge pump is designed to provide a regulated voltage for charging a Li-ion or Li-ion/polymer battery. It operates in the inverting configuration and requires a minimum input voltage of 4.3V. The downside of this configuration is that it has relatively high ripple-currents. However, the regular voltage loop helps to reduce the ripple-currents. The LTC4097EDDB#TRMPBF includes reverse-current protection and over-temperature protection features, which help to protect the battery.

Conclusion

The LTC4097EDDB#TRMPBF is a PMIC designed for charging, managing and protecting single-cell Li-ion/polymer batteries. It includes an LDO regulator and a charge pump, which can provide a power output of 2A at -1.2V to 5.5V. Its low quiescent current (less than 50μA) and its reverse-current protection and over-temperature protection features make it ideal for use in mobile devices, medical devices, and handheld products.

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