Nuvoton KA49703A supports battery packs with up to 16 series-connected cells and delivers outstanding cell voltage measurement accuracy of ±2.9 mV. It features a matrix-based temperature sensing architecture, enabling a dedicated temperature sensor for each individual cell, and supports bidirectional daisy-chain communication for scalable stackable battery systems.

Combining high performance, high reliability, and cost-effectiveness, the KA49703A is an ideal battery monitoring solution for a wide range of battery management applications.

• Feature
  

  -	High Accuracy: ±2.9 mV (typ.) accuracy
  -	Thermal Protection Coverage: Extend to 16 sensors
  -	Enhance Safety:
  	-Open wire detection
  	-OV / UV / OT / UT detection
  -	Efficient Cell Balance:
  	-All channels simultaneous Cell Balance
  	-Internal/external CB with PWM duty control
  -	Stackable: Support Ring Daisy Chain interface for stack High-speed SPI communication I/F with MCU

• Specifications

  -	Max Connected Cells: 16 cells
  -	Rated Voltage: 76.8 V
  -	Voltage Measure Accuracy: ±2.9 mV
  -	Daisy Chain Stackable: Available Max. 55 series
  -	Communication I/F: SPI / Daisy
  -	Current consumption:
  	-Active mode: 1.2 mA
  	-Shutdown mode: 5 μA
  -	Package: QFP-48 (7 × 7 mm)

• System Block Diagram