Datang NXP Semicorductors Battery management chip DNB1101A

　　Product introduction

　　DNB1101 is a single-cell Li-ion battery monitoring chip that provides electrochemical impedance spectroscopy testing for individual cells or parallel battery packs. The integrated on-chip temperature sensor can be used to test the temperature of the cell, eliminating the need for additional thermocouple NTC for temperature monitoring. In addition, DNB1101 can directly monitor the internal resistance of the cell through dedicated circuit technology, thus providing a new way to evaluate the internal temperature of the cell.

　　Voltage measurement accuracy +/- 5mV

　　The cell measures voltage from 1.9V to 5.5V

　　Chip internal temperature sensor accuracy +/ -2.5K

　　Passive equalization with diagnostic functions

　　Electrochemical impedance spectroscopy of cells with low impedance

　　The Daisy chain communication rate is 1Mbps

　　Operating temperature range -40 degrees to 105 degrees

　　Characteristics and advantages

　　peculiarity

　　This chip is a single-cell battery management chip, providing battery voltage detection, temperature detection, impedance detection and balancing functions. The temperature detection function of the chip does not require NTC and related peripheral circuits, and the impedance detection function makes some advanced system applications possible. The chip supports internal and external equalization, and the external equalization and impedance share a set of peripheral circuits, and the internal equalization does not need peripheral circuits. The chip has a certain self-diagnosis ability, supporting over and under voltage alarm, high and low temperature alarm, and other chip related abnormal alarm.

　　advantage

　　1) Can be directly labeled to the flexible PCB(FPCB), simplify the circuit at the same time can eliminate the slave board.

　　2) Built-in temperature sensor, no need for NTC and related peripheral circuits, saving materials.

　　3) Provide cell internal resistance monitoring function, support the realization of some advanced applications.

　　4) Support early warning of thermal runaway.

　　5) Support ultra-fast charging.

　　6) Support the online reading of the aging state of the battery cell, saving the cost of the recovery process.