KA49702A

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KA49702A

KA49702A are 1-chip battery monitoring IC for Li-ion battery cells, which have built-in high-resolution ADCs and can measure the voltage and current levels of battery cells with high accuracy. The IC can support applications with up to 17 battery cells connected in series or applications with a maximum voltage of 85V, contributing to the miniaturization of battery management systems. KA49702A achieves a voltage measurement accuracy +/-2.9mV, the highest standard in the industry. Additionally, the IC can support a high-side switch as a charging and discharging relay switch control.

Specification

Datasheet

Item	Performance characteristics
Category	Non Stackable
Package	QFP-48
Number of Channels	17
Operating Voltage [Min] (V)	12.5
Operating Voltage [Max] (V)	85
Interface	SPI
Voltage Accuracy (mV)	±2.9
Operating Temperature [Min] (°C)	-40
Operating Temperature [Max] (°C)	105

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Support tool

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Evaluation Board

KE-KA49702A - KA49702A Up to 17cell monitoring IC evaluation board

The KE-KA49702A is an evaluation board equipped with the KA49702A, capable of evaluating the voltage measurement of up to 17 battery cells, charging and discharging, cell balancing, fault detection, and more. The accompanying PC GUI software links with the MCU software to provide a high-level graphical user interface.

AFE Board:

Battery cell voltage measurement, High side charging and discharging, cell balancing, fault detection, etc.

MCU Controller Board:

MCU circuit (including software debugging interface)

Power management and MCU reset circuit

BM IC and PC GUI interface circuit

LED status indicators

Software:

PC Graphical User Interface (GUI) Software

Other Accessories:

Board connection wires

TTL-232R-3V3 cable

Various manuals

User Manual

KE-KA49702A

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KA49702A

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