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RT9440 - 2-5 Series Cell Fuel Gauge

Datasheet Summary

Description

The RT9440 device is a highly accurate and integrated, 2-to-5-series-cell fuel gauge and protection solution, with autonomous cell balancing, protection and charger control.

Features

  • State of Charge (SOC) Calculated by VoltaicGaugeTM with Current Sensing (VGCS).
  • Voltage Measurement: 3mV.
  • Current Measurement: 0.5%.
  • Battery Temperature Measurement: 1°C (TA = 0°C to 45°C).
  • Hardware Current Protection: 1mV.
  • Autonomous Cell Balance.
  • Configurable Protection Levels and Delay Times for Voltage, Temperature, and Current Protection.
  • Support Both Voltage-Base and SOC-Base Cell Balance.
  • 1.5V to 3.3V Configurable VOUT Power Supply.
  • H.

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Datasheet preview – RT9440

Datasheet Details

Part number RT9440
Manufacturer Richtek
File Size 2.31 MB
Description 2-5 Series Cell Fuel Gauge
Datasheet download datasheet RT9440 Datasheet
Additional preview pages of the RT9440 datasheet.

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Full PDF Text Transcription

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RT9440 2-5 Series Cell Fuel Gauge with Integrated Protector Solution for Li-Ion Battery Packs 1 General Description The RT9440 device is a highly accurate and integrated, 2-to-5-series-cell fuel gauge and protection solution, with autonomous cell balancing, protection and charger control. The RT9440 integrates highly accurate analog peripherals, measures and maintains an accurate record of available capacity, voltage, current, and temperature. The RT9440 reports the battery pack parameters to the system host controller via the SMBus interface. The recommended junction temperature range spans from −40C to 125C, while the ambient temperature range extends from −40C to 85C.
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