See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

DBV | 5

Temp:

Q (-40 to 125)

ECO Plan:

Green (RoHS & no Sb/Br)

LM3420AM5-8.4/NOPB


Lithium-Ion Battery Charge Controller

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750 - 999 $ 1.11
1000 - 9999 $ 0.93

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Texas Instruments LM3420AM5-8.4/NOPB

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 an 8.4-V version for one through four cell charger applications.

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. The output is an open-emitter NPN transistor capable of driving up to 15 mA of output current into external circuitry.

A trimmed precision bandgap reference utilizes temperature drift curvature correction for excellent voltage stability over the operating temperature range. The LM3420 series allows for precision end-of-charge voltage threshold for lithium-ion rechargeable batteries. The premium grade LM3420A is available with an initial voltage threshold tolerance of ±0.5%, while the standard grade LM3420 has an initial voltage threshold tolerance of ±1%.

The LM3420 is available in a sub-miniature 5-lead surface mount package thus allowing very compact designs.

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