LTC4020EUHF#PBF

LTC®4020 is a buck-boost multi-chemistry battery charger. This high-voltage power manager provides PowerPath™ instant-on operation and high-efficiency battery charging over a wide voltage range. An onboard buck-boost DC/DC controller operates with battery and/or system voltages above, below, or equal to the input voltage. It seamlessly manages power distribution between battery and converter outputs in response to load variations, battery charge requirements, and input power supply limitations. Application includes portable industrial and medical equipment, solar-powered systems, military communications equipment, 12V to 24V embedded automotive systems.

• Synchronous buck-boost DC/DC controller
• Li-Ion and lead-acid charge algorithms
• Instant-on for heavily discharged batteries
• Ideal diode controller provides low loss powerPath When Input Power is Limited
• Onboard timer for protection and termination
• Bad battery detection with auto-reset
• NTC input for temperature qualified charging
• Typical boost refresh supply voltage is 5V (ILOAD = 5mA, TA = 25°C)
• 38-lead plastic QFN package
• Temperature rating range from -40°C to 125°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party