KA49713A is an IC for lithium-ion battery measurement and monitoring. It incorporates a high-resolution ADC, enabling highly accurate measurement of battery cell voltages and current levels. Despite its compact 48-pin QFP package, the device can monitor up to 16 battery cells. It also features a daisy-chain function that supports up to 55 devices connected in series, making it ideal for high-voltage applications such as battery backup units for AI server and large-scale energy storage systems.

In addition, KA49713A achieves a voltage measurement accuracy with a maximum error of ±2.9 mV and includes alarm output functions for detecting overcharge, overdischarge, and abnormal high- or low-temperature conditions. The device also features a transportation and storage mode that achieves an ultra-low shutdown current of just 0.1 μA. This greatly minimizes battery self-discharge, making the device ideal for products that require long-term storage or extended standby operation. KA49713A contributes to improved safety, higher quality, reduced size, and lower power consumption in Battery Management Systems (BMS).

Specification

Datasheet

Item	Performance characteristics
Category	Stackable
Package	QFP-48
Number of Channels	16
Operating Voltage [Min] (V)	12.5
Operating Voltage [Max] (V)	76.8
Interface	SPI / Daisy
Voltage Accuracy (mV)	±2.9
Shutdown Current (μA)	0.1 (Transportation & Storage Mode)
Operating Temperature [Min] (°C)	-40
Operating Temperature [Max] (°C)	105

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