RAJ240080 is Renesas Li-ion battery fuel gauge IC (FGIC) which consists of a MCU device and an AFE device in a single package. Pack with a variety of battery management features and Renesas RL78 CPU core which has multiple low power modes and capable of achieving high performance in ultra-low power operation. RAJ240080 fuel gauge IC has control firmware stored in embedded flash memory to control attached embedded analog and digital circuits to execute battery voltage / current / temperature measurement, remaining capacity estimation, over current / voltage / temperature protection and other battery management operations.


  • Fully integrated battery management solution with battery capacity measurement and programmable protection capability.
  • Supports up to 5 Li-ion or Li-Polymer battery cells in series.
  • Integrated with Renesas Ultra Low Power RL78 CPU core for multi-function process
  • Memory Code flash memory: 64KB Data flash memory (up to 100,000 erase/write cycles): 4 KB SRAM: 5.5KB
  • Clock generator High-Speed on-chip oscillator: up to 32 MHz Low speed on-chip oscillator: 32 KHz AFE on-chip oscillator: 4.194MHz
  • General Purpose I/O Ports Total: 22 pins CMOS input/output: 16 CMOS input: 2 High voltage input [VCC tolerance]: 1 High voltage input/output [VCC tolerance]: 1
  • Serial interface CSI (SPI): 1 channel I2C: 1 channel UART: 2 channels Simplified I2C: 1 channel
  • Timer MCU 16-bit timer: 5 channels MCU 12-bit interval timer: 1 channel AFE timer: 2 channels AFE timer A: setting range: 125 ms to 64 s AFE timer B: setting range:30.52 us to 125 ms
  • Embedded A/D converter AFE 15-bit resolution sigma-delta A/D converter
  • Current integration circuit 18-bit resolution sigma-delta A/D converter
  • Impedance measurement circuit Simultaneous measurement of battery voltage and current
  • Over current detection circuit Short circuit current detection Charge overcurrent detection Discharge overcurrent detection Charge wakeup current detection Discharge wakeup current detection
  • Series regulator 3.3V CREG2 1.8V CREG1
  • Charge and Discharge MOSFET control High side Nch MOSFET drive circuit embedded Programmable MOSFET control by 8-bit PWM
  • Fuse control FUSEOUT pin can support fuse blow function.
  • Intel® Dynamic Battery Power Technology support
  • Voltage and temperature condition Power supply voltage: VCC = 4.0 to 28 V Operating ambient temperature: Ta = -20 to +85°C
  • Package Information 48 pin plastic mold QFP ([Body] 9.0 mm x 9.0 mm, 0.5 mm pitch)




Type Title Date
Datasheet PDF 2.12 MB
Brochure PDF 5.49 MB 日本語
Tool News - Note PDF 29 KB 日本語
Flyer PDF 417 KB 日本語 , 简体中文
Product Change Notice PDF 4.86 MB 日本語
Product Change Notice PDF 3.74 MB 日本語
Product Change Notice PDF 1.46 MB 日本語
Application Note PDF 509 KB
Application Note PDF 397 KB
9 items

Design & Development