Overview
Description
The RAA241200 battery fuel gauge and management device is used to accomplish various battery protection and management functions. This device incorporates advanced battery management features such as primary and secondary protection, voltage and current measurement, current integration, and host communication interface. Through user-programmable control firmware and configuration data stored in the onboard MCU’s embedded flash memory, the embedded analog and digital hardware circuits offer optimum battery management operations including high accuracy remaining capacity estimation, and battery safety.
Features
- Fully integrated battery management solution with battery capacity measurement and programmable protection capability
- Supports single-cell Li-ion or Li-polymer battery cell
- 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): 4KB
SRAM: 4KB - Clock generator
High-speed on-chip oscillator: up to 8MHz
Low-speed on-chip oscillator: 15kHz
AFE high-speed on-chip oscillator: 2.097MHz
AFE low-speed on-chip oscillator: 131.072kHz - General-purpose I/O ports
Total: 7 pins
CMOS input/output: 3, CMOS input: 1
N-Ch open-drain input/output [6V tolerance]: 3 - Serial interface
I2C: 1 channel
UART: 1 channel
Simplified I2C: 1 channel - Timer
16-bit timer: 4 channels
12-bit interval timer: 1 channel
Real-time clock: 1 channel
Watchdog timer: 1 channel
AFE timer: 2 channels
AFE timer A: Setting range: 125ms to 64s
AFE timer B: Setting range: 61µs to 2s - Embedded A/D converter
AFE 18-bit resolution sigma-delta A/D converter
Automatic measurement mode
Battery cell voltage, internal voltage, and temperature (AN port voltage) detection function without controlling from firmware - Current integration circuit
18-bit resolution sigma-delta A/D converter - Impedance measurement circuit
Simultaneous measurement of battery voltage and current - Overcurrent detection/wake-up current detection circuit
Discharge short-circuit current detection
Charge overcurrent detection
Discharge overcurrent detection
Charge wakeup current detection
Discharge wakeup current detection - Cell voltage detection circuit
Overvoltage detection
Undervoltage detection - Charge and discharge MOSFET control
Supports low-side N-Ch MOSFET control - Charger connect detection circuit
Designated charger detection pin when charge FET is off - Ultra-low power consumption
Shutdown mode current: 0.1µA (typ.)
Sleep mode 1 current: 10µA (typ.) (protection enable)
Normal mode current: 2mA (typ.) (protection and gauging enable, MCU always on)
Average current under typical operating conditions: 80µA (typ.)
(protection and gauging enable) - Voltage and temperature condition
Power supply voltage: VDD = 2.0V to 5.5V
Operating ambient temperature TA = -40 °C to +85 °C - Package information
16-pin WLBGA
([Body] 1.871mm x 2.478mm (TYP.) , 0.5mm pitch)
Comparison
Applications
- Smartphone and other single-battery applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 724 KB | |
| Flyer | PDF 417 KB 日本語 , 简体中文 | |
2 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.
Processing table
| S-UFBGA | 3 |
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