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.
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.
Parameters
| Attributes | Value |
|---|---|
| Series Cells | 2 to 4 Cells |
| Supply Voltage (V) | 4.0 - 25 |
| Comm. Interface | I2C, UART |
| Flash Memory (KB) | 64 |
| Charge/Discharge FET Control | High Side |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) |
|---|---|---|
| QFN | 4 x 4 x 0.95 | 32 |
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