特長
- 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)
説明
RAA241200は、様々なバッテリ保護および管理機能を実現するルネサスのリチウムイオン・バッテリ残量管理IC(FGIC)です。複数の低消費電力モードを持ち、超低消費電力動作で高いパフォーマンスを実現できるルネサスRL78 CPUコアと、様々なバッテリ管理機能を内蔵した製品です。 RAA241200は、制御ファームウェアを内蔵フラッシュメモリに格納し、内蔵されたアナログ回路およびデジタル回路を制御して、電池の電圧／電流／温度測定、残量推定、過電流／電圧／温度保護などの電池管理動作を実行することができます。
パラメータ
| 属性 | 値 |
|---|---|
| Series Cells | 1 Cell |
| Supply Voltage (V) | 2 - 5.5 |
| Comm. Interface | I2C, UART |
| Flash Memory (KB) | 64 |
| Charge/Discharge FET Control | Low Side |
パッケージオプション
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| S-UFBGA | 2 x 2 x 0.6 | 16 | 0.5 |
アプリケーション・ブロック図
 | Pulse Oximeter High‑accuracy, low‑power pulse oximeter platform with wireless connectivity, long battery life, and flexible designs for remote monitoring. |
 | スマートグラス エッジAI、セキュアOTA、ノイズキャンセリング、ワイヤレス充電を備えた、低消費電力でコストパフォーマンスの高いスマートグラス設計です。 |