RAJ240080 Datasheet, PDF (1/73 Pages) Renesas Technology Corp – Integrated Li-ION Battery Management IC for 2-5 Series Cell

Data Sheet
RAJ240080
R01DS0299EJ0010
Rev.0.01
Integrated Li-ION Battery Management IC for 2-5 Series Cell ^2016/8/10
1. Introduction
1.1 Features
Fully integrated battery management product
including battery capacity measurement and
protection.
Supports 2-5 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: 64 KB
 Data flash: 4 KB
Internal SRAM: 5.5 KB
Current 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 (5 cells)
Battery cell conditioning circuit (5 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)
High speed on-chip clock oscillator
 High speed operation :1 to 32 MHz
 Low speed operation :1 to 8 MHz
I/O port: 22
 CMOS input/output: 16
 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 28 V
Operation ambient temperature: Ta = -20 to +85°C
Package Information:
Plastic mold QFP (9mm x 9mm x 1.5mm)
1.2 Applications
 e-Bikes, e-Scooters, and Pedal-Assist Bicycles
 Power Tools, Battery Backup Systems (UPS)
 Telecom Power Systems
1.3 Description
RAJ240080 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. RAJ240080 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.