Datasheet
R01DS0301EJ0203
RAJ240090 / RAJ240100
Rev.2.03
3 to 10 Series Li-ion Battery Manager
Jan.17, 2020
1. Introduction
1.1
Features
◼ Fully integrated battery management solution with
battery capacity measurement and programmable
protection capability.
AFE 15-bit resolution sigma-delta A/D converter
MCU 8/10-bit resolution A/D converter
◼ Battery cell voltage and temperature (AN port voltage)
detection circuit
◼ Supports up to 10 Li-ion or Li-Polymer battery cells in
series. RAJ240090 supports 3 to 8 series cells,
RAJ240100 supports 3 to 10 series cells.
◼ Integrated with Renesas Ultra Low Power RL78 CPU core
for multi-function process
Monitoring over/under voltage and temperature by Sigma-
delta AD converter (AFE) without controlling from MCU
◼ 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
◼ Memory
Code flash memory: 128KB
Data flash memory (up to 100,000 erase/write cycles): 4 KB
SRAM: 7KB
Short circuit current detection
◼ Clock generator
Charge overcurrent detection
High speed on-chip oscillator: up to 32 MHz
Low speed on-chip oscillator: 32 KHz
AFE high speed on-chip oscillator: 4.194 MHz
AFE low speed on-chip oscillator: 131.072 KHz
◼ General Purpose I/O Ports
Total: 31 pins
Discharge overcurrent detection
Charge wakeup current detection
Discharge wakeup current detection
◼ Series regulator
3.3V or 5.0V CREG2
Over 100mA output current by external Nch MOSFET
◼ Charge and Discharge MOSFET control
High side Nch MOSFET drive circuit embedded
Programmable MOSFET control by 8-bit PWM
◼ Support RTC function
CMOS input/output: 20
CMOS input: 4
N-ch open drain Input/output [6V tolerance]: 4
High voltage input/output [VCC tolerance]: 3
◼ Serial interface
To connect External crystal resonator (32.768 kHz) and
generate internal clock.
CSI (SPI): 2 channels
I2C: 1 channel
◼ Voltage and temperature condition
Power supply voltage: VCC = 4.0 to 50 V
Operating ambient temperature
UART: 2 channels
Simplified I2C: 2 channels
CAN interface (RS-CAN lite): 1 channel
◼ Timer
-
-
TA=-20 to 85C (REG2T6 bit = 0)
TA=-40 to 85C (REG2T6 bit = 1)
MCU 16-bit timer: 6 channels
Operating ambient temperature is configurable by REG2T6
bit of REG2T register setting.
MCU 12-bit interval timer: 1 channel
MCU Real time clock: 1 channel
AFE timer: 2 channels
◼ Package Information
64 pin plastic mold LQFP
-
-
AFE timer A: setting range: 125 ms to 64 s
([Body] 10.0 mm x 10.0 mm, 0.5 mm pitch)
AFE timer B: setting range：30.52 us to 125 ms
◼ Embedded A/D converter
1.2
Applications
•
•
•
E-Bike, E-Scooter, Pedal-Assist Bicycle
Power Tool, Vacuum Cleaner, Drone
Battery Backup System, Energy Storage System (ESS)
1.3
Description
RAJ240090 / RAJ240100 are Renesas Li-ion battery fuel gauge IC (FGIC) which consist 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. RAJ240090 /
RAJ240100 fuel gauge IC have 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.
R01DS0301EJ0203 Rev.2.03
Jan.17, 2020
Page 1 of 83
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