LT8491EUKJ#TRPBF

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SWITCHING VOLTAGE REGULATORS HIGH VOLTAGE BUCK-BOOST BATTERY CHARGE CONTROLLER WITH MAXIMUM POWER POINT TRACKING (MPPT) AND I2C

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LT8491EUKJ#TRPBF

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Analog Devices Inc./Maxim Integrated

SWITCHING VOLTAGE REGULATORS HIGH VOLTAGE BUCK-BOOST BATTERY CHARGE CONTROLLER WITH MAXIMUM POWER POINT TRACKING (MPPT) AND I2C

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT8491 Series

The LT8491 is a buck-boost switching regulator battery charger that implements a constant-current constant-voltage (CCCV) charging profile used for most battery types, including sealed lead-acid (SLA), flooded, gel and lithium-ion.The device operates from input voltages above, below or equal to the output voltage and can be powered by a solar panel or a DC power supply. On-chip logic provides automatic maximum power point tracking (MPPT) for solar powered applications. The LT8491 can perform automatic temperature compensation by sensing an external thermistor thermally coupled to the battery. The STATUS pin can be used to drive an LED indicator lamp. The device is available in a low profile (0.75mm) 7mm × 11mm 64-lead QFN package.ApplicationsSolar Powered Battery ChargersMultiple Types of Lead-Acid Battery ChargingLi-Ion Battery ChargerBattery Equipped Industrial or Portable Military Equipment

Technical Specifications

Parameters and characteristics for this part

Specification	LT8491EUKJ#TRPBF

Battery Chemistry	Lead Acid
Battery Pack Voltage (Max)	80 V
Battery Pack Voltage (Min)	1.3 V
Current - Charging	Constant
Fault Protection	Over Voltage, Over Temperature
Interface	I2C
Mounting Type	Surface Mount
Number of Cells	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Package / Case	64-WFQFN Exposed Pad
Package Length	7 mm
Package Name	64-QFN
Package Width	11 mm
Programmable Features	Voltage, Current
Voltage - Supply (Max)	80 V

LT8491 Series

Part	Number of Cells	Package Name	Package Length	Package Width	Battery Chemistry	Operating Temperature (Max)	Operating Temperature (Min)	Programmable Features	Package / Case	Mounting Type	Interface	Fault Protection	Current - Charging	Battery Pack Voltage (Min)	Battery Pack Voltage (Max)	Voltage - Supply (Max)
Analog Devices Inc./Maxim Integrated LT8491EUKJ#TRPBF	1	64-QFN	7 mm	11 mm	Lead Acid	125 °C	-40 °C	Current Voltage	64-WFQFN Exposed Pad	Surface Mount	I2C	Over Temperature Over Voltage	Constant	1.3 V	80 V	80 V
Analog Devices Inc./Maxim Integrated LT8491EUKJ#PBF	1	64-QFN	7 mm	11 mm	Lead Acid	125 °C	-40 °C	Current Voltage	64-WFQFN Exposed Pad	Surface Mount	I2C	Over Temperature Over Voltage	Constant	1.3 V	80 V	80 V
Analog Devices Inc./Maxim Integrated LT8491IUKJ#TRPBF	1	64-QFN	7 mm	11 mm	Lead Acid	125 °C	-40 °C	Current Voltage	64-WFQFN Exposed Pad	Surface Mount	I2C	Over Temperature Over Voltage	Constant	1.3 V	80 V	80 V
Analog Devices Inc./Maxim Integrated LT8491IUKJ#PBF	1	64-QFN	7 mm	11 mm	Lead Acid	125 °C	-40 °C	Current Voltage	64-WFQFN Exposed Pad	Surface Mount	I2C	Over Temperature Over Voltage	Constant	1.3 V	80 V	80 V

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LT8491: High Voltage Buck-Boost Battery Charge Controller with Maximum Power Point Tracking (MPPT) and I2C Data Sheet (Rev.0)

R541 Reliability Data

Package Drawing - 64(58)-Lead Plastic QFN (7mm × 11mm)