RT9440 Datasheet 2-5 Series Cell Fuel Gauge

Manufacturer: Richtek

Overview: RT9440 2-5 Series Cell Fuel Gauge with Integrated Protector Solution for Li-Ion Battery Packs 1.

Datasheet Details

Part number	RT9440
Manufacturer	Richtek
File Size	2.31 MB
Description	2-5 Series Cell Fuel Gauge
Datasheet	RT9440-Richtek.pdf

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.

Key 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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