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R5602 Series, New Analog Front-end IC for Monitoring 4- to 7-cell Li-ion/Li-polymer Battery Cell Voltages

 

Ricoh Electronics Devices Co., Ltd. has launched the R5602 series, an analog front-end IC suitable for use in monitoring 4- to 7-cell battery’s cell voltages.

Battery protection has been becoming more important to ensure safety in applications using Li-ion batteries such as power tools, cleaners, electric assist bicycles, E-bikes, drones, power storages, etc. On the other hand, as operation control is becoming more complicated, an increasing number of these applications have come to adopt protection by the combination of an MCU and an analog front-end IC (hereafter, AFE) instead of conventional protective methods by hardware.

The R5602 series can help construct high-value-added, sophisticated applications us-ing Li-ion batteries. It can prolong the lifetime of lithium batteries with its high-accuracy voltage monitoring and low power consumption. In addition, adopting high-side Nch drive can simplify the circuit structure of a system and reduce the cost for external components. Furthermore, no limitation in cell connection sequence can reduce cost for battery pack assembly.

The R5602 series adopts QFN0505-32C as its package, which enables high-density mounting thanks to the small size.

The new AFE will, by combining it with an MCU, contribute to constructing lithium-battery-powered applications which achieve high accuracy monitoring and low power consumption.

Key Features of R5602 Series
The R5602 series is an analog front-end IC which can achieve high-accuracy monitoring and low power consumption, suitable for multi-cell Li-ion battery monitoring.

1. High-accuracy Voltage Monitoring
Cell Voltage Monitor Input Range: 1.5 V to 4.5 V, Accuracy: ±30 mV *
* Values within operating temperature of -20 to 85°C and ADC-Vref Errors included.
The IC eliminates the imbalance between cell voltages by suitably operating cell balancing operations.

2. Ultra-low Power Consumption
Active Mode: Typ. 150 µA, Standby Mode: Max. 1.0 μA
The IC can reduce power consumption considerably by switching the CE input signal and turning to standby mode.

3. High-side Nch FET Control
The feature contributes to easily constructing a circuit, selecting components, and reducing cost.

4. Built-in Switch for Open-Wire Detection
The built-in switch will help enhance the safety and security of applications.

5. No Limitation in Cell Connection Sequence at CE=L
This simplifies battery pack assembly process and reduces manufacturing cost.

6. Package
QFN0505-32C (5.0×5.0×0.8(max) mm) is adopted for the new IC. The small package will reduce mounting size.

Pricing and Availability
For more information about pricing and availability info please visit email: sales.europe@macnica.com.

About Ricoh Electronic Devices Co., Ltd
Ricoh Electronic Devices Co., Ltd is a leading global provider of semiconductor products, offering a comprehensive portfolio of CMOS Power Management and Real Time Clock ICs that enable engineers to design advanced applications for the consumer, industrial and automotive markets. The companies headquarter is based in Japan, as well as development, sales and manufacturing facilities. Regional sales and support offices are located in North America, Europe, and Asia.

Ricoh has an extensive expertise in small package technology and has a focus on developing products providing features such as low-supply current, high-accuracy, high efficiency and high-reliability. https://www.n-redc.co.jp/en/