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LTC4009-2 - Multi-Chemistry Battery Charger

Download the LTC4009-2 datasheet PDF. This datasheet also covers the LTC4009 variant, as both devices belong to the same multi-chemistry battery charger family and are provided as variant models within a single manufacturer datasheet.

General Description

The LTC®4009 is a constant-current/constant-voltage battery charger controller.

It uses a synchronous quasiconstant frequency PWM control architecture that will not generate audible noise with ceramic bulk capacitors.

Key Features

  • n General Purpose Battery Charger Controller n Efficient 550kHz Synchronous Buck PWM Topology n ±0.5% Output Float Voltage Accuracy n Programmable Charge Current: 4% Accuracy n Programmable AC Adapter Current Limit: 3% Accuracy n No Audible Noise with Ceramic Capacitors n Wide Input Voltage Range: 6V to 28V n Wide Output Voltage Range: 2V to 28V n Indicator Outputs for AC Adapter Present, Charging, C/10 Current Detection and Input Current Limiting n Analog Charge Current Monitor n Micropower Shu.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LTC4009_LinearTechnology.pdf) that lists specifications for multiple related part numbers.

Full PDF Text Transcription for LTC4009-2 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for LTC4009-2. For precise diagrams, and layout, please refer to the original PDF.

Features n General Purpose Battery Charger Controller n Efficient 550kHz Synchronous Buck PWM Topology n ±0.5% Output Float Voltage Accuracy n Programmable Charge Current...

View more extracted text
gy n ±0.5% Output Float Voltage Accuracy n Programmable Charge Current: 4% Accuracy n Programmable AC Adapter Current Limit: 3% Accuracy n No Audible Noise with Ceramic Capacitors n Wide Input Voltage Range: 6V to 28V n Wide Output Voltage Range: 2V to 28V n Indicator Outputs for AC Adapter Present, Charging, C/10 Current Detection and Input Current Limiting n Analog Charge Current Monitor n Micropower Shutdown n Thermally Enhanced 20-Pin 4mm × 4mm × 0.

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