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NOTICE - The following device(s) are recommended alternatives:
RAJ240055DNP - 2 to 4 Series Li-ion Battery Fuel Gauge IC
RAJ240045DNP is not recommended for new designs.

Overview

Description

RAJ240045 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. RAJ240045 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.

Features

  • Fully integrated battery management solution with battery capacity measurement and programmable protection capability.
  • Supports 2-4 series Li-ion or Li-Polymer battery cells
  • 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: 4 KB
  • Clock generator
    • High-Speed on-chip oscillator: up to 32 MHz
    • Low speed on-chip oscillator: 15 KHz
    • AFE on-chip oscillator: 4.194MHz
  • General Purpose I/O Ports
    • Total: 12 pins
    • CMOS input/output: 6
    • CMOS input: 2
    • N-ch open drain: 2
    • High voltage input [VCC tolerance]: 1
    • 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: 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.
  • Support Intel® Dynamic Battery Power Technology (Intel® DBPT) Note
  • 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)

Note Intel and the Intel logo are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries.

Comparison

Applications

Documentation

Type Title Date
Datasheet PDF 2.73 MB
Brochure PDF 1.11 MB
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

Models

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

Diagram of ECAD Models

Product Options

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Support Communities

  1. What do I need to get starting with RAJ240045DNP ?

    Hello, I am Ionel Popovici form Hungary, I have a company which designs BMS to be integrated in a pack 3s2p for general customers consuming. In the past I used chips from Texas Instruments liks BQ40z50. But now I want to start a line with Renesas RAJ240045A20DNP. I have an ...

    Dec 6, 2023
  2. RAJ240045

    Hi guys! Need help RL78 T01 (R110GV210), where you can download the document RAJ240045 Users Manual Hardware RAJ2400045

    Jan 27, 2021