Overview
Description
RAJ240071 and RAJ240075 (hereafter these are written as RAJ24007X) are Renesas Li-ion battery fuel gauge ICs (FGIC) which consist 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.
Features
- 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)
Comparison
Applications
Documentation
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| Type | Title | Date |
| Datasheet | PDF 4.40 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
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
| QFN | Tape & Reel | 3 |
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