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LM3420 - Lithium-Ion Battery Charge Controller

This page provides the datasheet information for the LM3420, a member of the LM3-420 Lithium-Ion Battery Charge Controller family.

Datasheet Summary

Description

The LM3420 series of controllers are monolithic integrated circuits designed for charging and end-of-charge control for Lithium-Ion rechargeable batteries.

Features

  • n n n n n Voltage options for charging 1, 2, 3 or 4 cells Tiny SOT23-5 package Precision (0.5%) end-of-charge control Drive capability for external power stage Low quiescent current, 85 µA (typ. ).

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Datasheet preview – LM3420

Datasheet Details

Part number LM3420
Manufacturer National Semiconductor
File Size 393.26 KB
Description Lithium-Ion Battery Charge Controller
Datasheet download datasheet LM3420 Datasheet
Additional preview pages of the LM3420 datasheet.

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Full PDF Text Transcription

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LM3420-4.2, -8.2, -8.4, -12.6, -16.8 Lithium-Ion Battery Charge Controller May 1998 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 loop frequency compensation.
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