LM3647
LM3647 is Universal Battery Charger manufactured by National Semiconductor.
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 (- ΔV)
- Optional: Delta temperature/delta time (ΔT/Δt)
- Backup: Maximum temperature
- Backup: Maximum time
- Backup: Maximum voltage
If both voltage and temperature fail to trigger the termination requirements, then the maximum time (configured by external hardware) steps in which terminates the charging.
In Ni-Cd/Ni-MH...
