LM3420-16.8

Features: Voltage options for charging1, 2, 3 or 4 cellsTiny SOT23-5 packagePrecision (0.5%) end-of-charge controlDrive capability for external power stageLow quiescent current,85µA(typ.)ApplicationLithium-Ion battery chargingSuitable for linear and switching regulator charger designsSpecifi...

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SeekIC No. : 004395315 Detail

LM3420-16.8: Features: Voltage options for charging1, 2, 3 or 4 cellsTiny SOT23-5 packagePrecision (0.5%) end-of-charge controlDrive capability for external power stageLow quiescent current,85µA(typ.)Appli...

floor Price/Ceiling Price

Part Number:
LM3420-16.8
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2020/4/2

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Product Details

Description



Features:

Voltage options for charging1, 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,85µA(typ.)



Application

Lithium-Ion battery charging
Suitable for linear and switching regulator charger designs



Specifications

If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/Distributors for availability and specifications.
In put Voltage V(IN)                                            20V
Output Current                                                 20mA
Junction Temperature                                         50˚C
Storage  Temperature                       −65˚Cto+150˚C
Lead Temperature
    Vapor Phase(60seconds)                           +215˚C
    Infrared (15seconds)                                 +220˚C
Power Dissipation(TA=25˚C)
   (Note2)                                                       300mW



Description

The LM3420-16.8 series of controllers are monolithic integrated Lithium-Ion rechargea blebatteries.The LM3420-16.8 is available applications(4.2V,8.2V/8.4V,12.6Vand16.8Vrespec-tively).

Included in a very small package is an (internally compen-sated)op amp,a bandgap reference,an NPN out puttransis   tor,and voltage setting resistors. The amplifier's inverting in put   is  externally accessible for   loop   frequency compensation. The output is an open-emitter NPN transistor capable of driving up to15 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.Available with an initial tol-eranceo f0.5% for the A grade version,and 1% for the stan-dard version,the LM3420 allows for precision end-of-charge contro lfor Lithium-Ionrechargeable batteries.

The LM3420-16.80 is available in a sub-miniature 5-lead SOT23-5 surface mount package thus allowing very compact designs.



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