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BU1840AMUV - Synchronous Switch-Mode Charger IC

Datasheet Summary

Description

The BU1840AMUV device provides the best system to the product charged with 1cell Li-ion battery and 3cell Nickel-metal-hydride batteries using the 2cell, 3cell, and 4cell solar panel.

Features

  • Synchronous Switch-Mode Charger for 2Cell Solar 400mA@Battery=3.7V,VIN=1V.
  • MPPT control voltage range：0.7V～1.5V.
  • Charging current completion voltage： 5.0V (hysteresis: 0.075V).
  • Built in MPPT.
  • Switching frequency (160kHz,320kHz).
  • Charging current monitor by I2C.
  • UVLO-detect Voltage:0.625V.
  • UVLO-release Voltage:0.700V.
  • Thermal Shutdown.
  • 24 pin VQFN024V4040 (4.1mm×4.1mm).

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Datasheet Details

Part number BU1840AMUV
Manufacturer ROHM
File Size 604.67 KB
Description Synchronous Switch-Mode Charger IC
Datasheet download datasheet BU1840AMUV Datasheet
Additional preview pages of the BU1840AMUV datasheet.

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Full PDF Text Transcription

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Datasheet For 2Cell Solar, Synchronous Switch-Mode Charger IC BU1840AMUV ●General Description The BU1840AMUV device provides the best system to the product charged with 1cell Li-ion battery and 3cell Nickel-metal-hydride batteries using the 2cell, 3cell, and 4cell solar panel. It is possible to boost it according to the voltage of 2 cell solar panel with built-in the function to boost the low voltage input. Moreover, the solar battery maximum dissipation can be drawn out with built-in the peak power track function. It is possible to select the the switching frequency according to the terminal SEL. It is also possible to monitor the charging current by the I2C interface.
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