LM3420-4.
2, -8.
2, -8.
4, -12.
6, -16.
8 Lithium-Ion Battery Charge Controller
July 2000
LM3420-4.
2, -8.
2, -8.
4, -12.
6, -16.
8 Lithium-Ion Battery Charge Controller
General Description
The LM3420 series of controllers are monolithic integrated circuits designed for charging and end-of-charge control for Lithium-Ion rechargeable batteries.
The LM3420 is available in five fixed voltage versions for one through four cell charger applications (4.
2V, 8.
2V/8.
4V, 12.
6V and 16.
8V respectively).
Included in a very small package is an (internally compensated) op amp, a bandgap reference, an
NPN output
transistor, and voltage setting resistors.
The amplifier’s inverting input is externally accessible for ...