概览
描述
RAJ240047 is Renesas battery management IC which incorporates a variety of battery fuel gauge features. Embedded Renesas RL78 CPU core has multiple low power modes and achieve high performance in ultra-low power operation. This product consists of MCU device and AFE device in a single package. Fuel gauge control firmware is stored in embedded flash memory and controls 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.
特性
- Fully integrated battery management product including battery capacity measurement and protection.
- Supports 2-4 Li-Ion or Li-Polymer battery cells in series.
- Ultra-low power Renesas RL78 CPU core
- Built-in flash memory (block erase/write protection) · Flash ROM: 128KB · Data flash: 4 KB
- Internal SRAM: 5.5 KBCurrent integrating circuit (18-bit ΔΣA/D)
- 15-bit ΔΣA/D converter (external 3 channels, internal 5 channels including simple temperature sensor)
- High side N-ch FET control circuit for charge and discharge current protection
- Overcurrent detection circuit (discharge short-circuit current (2 channels), charge/discharge overcurrent, and wake-up current)
- Battery voltage detection circuit (4 cells)
- Battery cell conditioning circuit (4 cells)
- Pack+ terminal voltage detection circuit
- FUSE control circuit
- MCU built-in High-Speed on-chip clock generator
- AFE on-chip oscillator clock (4.194 MHz)
- MCU runaway detection circuit
- MCU build-in watchdog timer
- Series regulator (VREG2: 3.3 V, VREG1: 1.8 V)
- Reset circuit (VREG2, VREG1 monitoring)
- MCU low power modes : HALT and STOP
- High-Speed on-chip clock oscillator · High-Speed operation :1 to 32 MHz · Low speed operation :1 to 8 MHzI/O port: 12 · CMOS input/output: 6 · CMOS input: 2 · N-ch open drain: 2 · High voltage input: 1 · High voltage output: 1
- Serial interface: · I2C · UART · Simplified I2C
- MCU 16-bit timer: 5 channels
- MCU 12-bit interval timer: 1 channel
- AFE timer (setting range: 125 ms to 64 s)
- 8 bits PWM signal generator
- Intel® Dynamic Battery Power Technology support
- Impedance measurement circuit
- Built-in on-chip debug function
- Self programming function support
- Power supply voltage: VCC = 4.0 to 25 V
- Operation ambient temperature: Ta = -20 to +85°C
- Package Information:
- Plastic mold QFN (4mm x 4mm x 0.95mm)
产品对比
应用
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| 类型 | 文档标题 | 日期 |
| 数据手册 | PDF 2.57 MB | |
| 宣传手册 | PDF 1.11 MB | |
| 工具新闻 - 注意事项 | PDF 29 KB 日本語 | |
| 传单 | PDF 345 KB English , 日本語 | |
| 产品变更通告 | PDF 4.86 MB 日本語 | |
| 产品变更通告 | PDF 3.74 MB 日本語 | |
| 产品变更通告 | PDF 1.46 MB 日本語 | |
| 应用说明 | PDF 509 KB | |
| 应用说明 | PDF 397 KB | |
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