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Renesas Electronics Corporation
3 to 7 Series Li-ion Battery Fuel Gauge IC

Package Information

CAD Model:View CAD Model
Pkg. Type:QFN
Pkg. Code:
Lead Count (#):48
Pkg. Dimensions (mm):6 x 6 x 1.0
Pitch (mm):

Environmental & Export Classifications

Moisture Sensitivity Level (MSL)3
Pb (Lead) FreeYes
ECCN (US)3A991.a.2
HTS (US)8542.39.0090

Product Attributes

Pkg. TypeQFN
Lead Count (#)48
Carrier TypeTape & Reel
Moisture Sensitivity Level (MSL)3
Pkg. Dimensions (mm)6 x 6 x 1.0
Target applicationsIndustrial/Hi-power equipment, Battery Management Unit
Pb (Lead) FreeYes
ApplicationBattery Management Unit
Charge/Discharge FET ControlHigh / Low Side
Comm. InterfaceI2C, UART
Device FunctionsBattery Protection, Fuel Gauging
Family NameFuel Gauge IC (FGIC)
Flash Memory (KB)128KB
FunctionBattery fuel gauging
I/O Ports19
Lead CompliantYes
Length (mm)6
MOQ2500
Parametric CategoryBattery Fuel Gauges
RemarksLi-ION battery Fuel gauge
Series Cells3 to 7 Cells
Supply Voltage (V)4 - 50
Tape & ReelYes
Thickness (mm)1

Description

The RAJ240091 is a Renesas Li-ion battery fuel gauge IC (FGIC), which consists of an MCU device and an AFE device in a single package. It features the RL78 CPU core with multiple low-power modes, enabling high performance during ultra-low power operation.

This fuel gauge IC includes control firmware stored in embedded flash memory, which manages the operation of its analog and digital circuits. Its core functions include measuring battery voltage, current, and temperature, estimating remaining capacity, and providing protection against overcurrent, overvoltage, and excessive temperature, as well as executing other battery management operations.