Linear LT8490 Charge Controller Datasheet

The LT

Brand
Category: Charge Controller
Document type: Datasheet
Language: English
Pages: 43
File format: PDF
File size: 622 KB
Published: 04 July, 2014
Updated: 25 September, 2023
MD5 checksum: C0F0822FBFFCF0D3FD2F4BB56B5BE8B3
PDF: Linear LT8490 Charge Controller Datasheet PDF

About this manual

The Linear LT8490 is a buck-boost switching regulator battery charger that implements a constant-current constant-voltage (CCCV) charging profile suitable for sealed lead-acid, flooded, gel, and lithium-ion batteries. It 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.

The device features on-chip logic for automatic maximum power point tracking (MPPT) in solar-powered applications and automatic temperature compensation via an external thermistor. It includes STATUS and FAULT pins for driving LED indicators and is available in a 64-lead QFN package.

What's inside

Typical Applications
Pin Configuration
Absolute Maximum Ratings
Electrical Characteristics
Switching Regulator Oscillator
Charging Control
Power Supply Mode Detection
Package Description

Specifications

Input Voltage Range	6V to 80V
Battery Voltage Range	1.3V to 80V
Switching Frequency Range	100 kHz to 400 kHz
Operating Junction Temperature	-40°C to 125°C
Package Type	64-Lead Plastic QFN

Frequently asked questions

What battery types does the LT8490 support?

It supports sealed lead-acid (SLA), flooded, gel, and lithium-ion batteries.

Does the LT8490 support solar power?

Yes, it can be powered by a solar panel or a DC power supply and includes automatic MPPT.

What is the output voltage regulation accuracy?

The regulation voltage for FBOUT is typically 1.207V with a maximum of 1.222V.

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