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LN2051 - 1A is compatible with the USB interface / linear battery management chip

Datasheet Summary

Description

The LN2051 is a constant- current / constant- voltage charger circuit for single cell lithium-ion batteries.

The device includes an internal power transistor, does not need external current sense resistor and blocking diode in applications.

Features

  • Programmable charge current up to 1A.
  • No MOSFET, sense resistor or blocking diode required.
  • Complete linear charger in small package for single cell lithium-ion batteries.
  • Constant-Current/Constant-Voltage operation with thermal regulation to maximize charge rate without risk of overheating.
  • Charges single cell li-Ion batteries directly from USB port.
  • Preset 4.2V charge voltage with 1% accuracy, also can be adjusted by FB.
  • Monitor output charge current.

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Datasheet preview – LN2051

Datasheet Details

Part number LN2051
Manufacturer natLinear
File Size 408.17 KB
Description 1A is compatible with the USB interface / linear battery management chip
Datasheet download datasheet LN2051 Datasheet
Additional preview pages of the LN2051 datasheet.

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Full PDF Text Transcription

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LN2051 1A is compatible with the USB interface, linear battery management chip ■ General Description The LN2051 is a constant- current / constant- voltage charger circuit for single cell lithium-ion batteries. The device includes an internal power transistor, does not need external current sense resistor and blocking diode in applications. LN2051 requires minimal external components, and meet the USB bus specification, is very suitable for portable applications in the field. Thermal modulation circuit can control the chip temperature in a safe range when the device power dissipation be relatively large or the ambient temperature be higher. Within a fixed constant charge voltage 4.2V, can also be adjusted by an external resistor. Charge current set by an external resistor.
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