Nisshinbo R5602L Battery Management Analog Front-End IC

Nisshinbo R5602L Battery Management Analog Front-End IC is ideal for 4-cell to 7-cell Li-ion/Li-polymer battery management. The R5602L IC offers high accuracy voltage monitoring and low power consumption in a -40°C to +125°C temperature range. The device features a cell voltage monitor, bidirectional current monitor (based on monitoring the voltage across an external sense resistor), two input pins for temperature monitoring by external NTC thermistors, and a Die temperature monitor. The R5602L Front-End IC also offers overcurrent protection, high-side NMOSFET control, a voltage regulator, cell balancing switches, a switch for open-wire detection, and an I²C/SPI interface. A built-in A/D converter and MCU can read each monitor value as a digital value.

Features

High accuracy voltage monitoring
Low power consumption
Control high-side NMOSFET

Cell connection sequence free
5mm² x 0.8mm, QFN0505-32C package style

Applications

Power tools
Power storage
Cordless/robot cleaners

Pedelec
E-bikes
Drones

Specifications

40V absolute maximum rating
Power consumption
- 150µA typical active consumption
- 1.0µA maximum standby consumption
Built-in 12-bit A/D converter
Cell voltage monitor
- 1.5V to 4.5V input range
- ±30mV accuracy
Current monitor based-on monitoring the voltage across the sense resistor with gains of 2.5x, 10x, and 20x
Temperature monitoring by two external NTC thermistors
Die temperature monitoring and high-temperature alert

Less than 1ms/1monitor maximum monitoring speed
Overcurrent protections by detectors
- Overcharge
- Over-discharge
- Sort-circuit
3.4V typical voltage regulator output
High-side NMOSFET control
Built-in cell balancing switch, cell balancing current depends on the external resistor (up to 20mA)
Built-in switch for open-wire detection
Cell connection sequence free when CE = low
I²C/SPI interface with/without CRC