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LM3647IM Datasheet PDF - National ->Texas Instruments

Номер в каталогеКомпоненты Описаниепроизводитель
LM3647IM Universal Battery Charger for Li-Ion, Ni-MH and Ni-Cd Batteries National-Semiconductor
National ->Texas Instruments National-Semiconductor
Other PDF  no available.
LM3647IM Datasheet PDF : LM3647IM pdf   
LM3647 image

General Description
The LM3647 is a charge controller for Lithium-Ion (Li-Ion), Nickel-Metal Hydride (Ni-MH) and Nickel-Cadmium (Ni-Cd) batteries. The device can use either a pulsed-current charging or a constant-current charging technique. The device can also be configured to discharge before charging. Throughout the charging sequence the LM3647 monitors voltage and/or temperature and time in order to terminate charging. Charge termination methods are:
• Negative delta voltage (−∆V)
• Optional: Delta temperature/delta time (∆T/∆t)
• Backup: Maximum temperature
• Backup: Maximum time
• Backup: Maximum voltage

Features
Auto-adaptive fast charge
High-resolution, accurate voltage monitoring prevents Li-Ion undercharge or overcharge
Fast charge, pre-charge and maintenance currents are provided. Different currents are selectable via external resistors.
Fast-charge termination by ∆ temperature/∆ time, maximum voltage, maximum temperature, negative ∆ voltage and maximum time
Dynamically detects battery insertion, removal, short circuit and bad battery without additional hardware
Supports charging of battery packs with 2–8 cells of Ni-Cd/Ni-MH or 1–4 cells of Li-Ion (1 cell of NiCd/NiMH can be supported by added external 2x voltage amplifier)
Three optional LED indicators and Buzzer output indicate operational modes
Ni-MH/Ni-Cd charge mode, Li-Ion charge mode or discharge mode can be selected manually
Supports control of current feedback power supply and constant current power supply

Applications
Battery charging systems for:
— Portable consumer electronics
— Audio/video equipment
— Communications equipment
— Point of sale devices
— Power tools
— Personal convenience products

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