Renesas RAJ240075A20DNP#HC1

RAJ240071 and RAJ240075 (hereafter these are written as RAJ24007X) are Renesas Li-ion battery fuel gauge ICs (FGIC) which consists of an MCU device and an AFE device in a single package. Packed 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. RAJ24007X 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: 32KB (RAJ240071), 64KB (RAJ240075)
  • Data flash memory (up to 100,000 erase/write cycles): 4KB
  • SRAM: 1.5KB (RAJ240071), 4KB (RAJ240075)
• Clock generator
  • High-Speed on-chip oscillator: up to 32MHz
  • Low speed on-chip oscillator: 32KHz
  • AFE on-chip oscillator: 4.194MHz
• General Purpose I/O Ports
  • Total: 11 pins
  • CMOS input/output: 6
  • CMOS input: 2
  • N-ch open drain: 2
  • High voltage output [VCC tolerance]: 1
• Serial interface
  • CSI (SPI): 1 channel
  • I2C: 1 channel
  • UART: 1 channel
  • Simplified I2C: 1 channel
• Timer
  • MCU 16-bit timer: 3 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 25 V
  • Operating ambient temperature: Ta = -20 to +85°C
• Package Information: 32 pin plastic mold QFN ([Body] 4.0 mm x 4.0 mm, 0.4 mm pitch)