Automotive, 105°C Operation, Battery Monitoring IC for 3-Serial to 6-Serial Cell Pack S-19192 Series

Describe:

The S-19192 Series is a monitoring IC for automotive rechargeable batteries, which includes high-accuracy voltage detection circuits and delay circuits. Switching control for 3-serial to 6-serial cell is possible by inputting voltage to the SEL1 pin and the SEL2 pin.

In addition, the S-19192 Series can perform a self-test to confirm overcharge and overdischarge detection operations.

Features:

• High-accuracy voltage detection circuit for each cell 

 Overcharge detection voltage n (n = 1 to 6): 2.500 V to 4.500 V (25 mV step) Accuracy ±20 mV (Ta = +25°C) 

 Accuracy ±30 mV (Ta = −5°C to +55°C) 

 Overcharge release voltage n (n = 1 to 6): 2.300 V to 4.500 V^*1 Accuracy ±50 mV 

 Overdischarge detection voltage n (n = 1 to 6): 1.500 V to 3.000 V (100 mV step)^{*2, *3} Accuracy ±80 mV 

 Overdischarge release voltage n (n = 1 to 6): 1.500 V to 3.300 V^*4 Accuracy ±100 mV 

• Self-test results to confirm overcharge and overdischarge detection operations can be output from OUT2 pin. 

Delay time shortening during self-test: Available, unavailable 

Self-test result output latch: Available, unavailable 

• Each delay time is settable by an internal circuit only (External capacitors are not necessary). 

 Detection delay time: 32 ms, 64 ms, 128 ms, 256 ms 

 Release delay time: 2.0 ms, 4.0 ms, 8.0 ms, 16.0 ms 

• Switching control for 3-serial to 6-serial cell is possible by inputting voltage to the SEL1 pin and the SEL2 pin. 

• Two detection signal types: 

 Common: OUT1 pin: Overcharge and overdischarge detection signal 

 Separate: OUT1 pin: Overcharge detection signal 

 OUT2 pin: Overdischarge detection signal 

• Output form: CMOS output, Nch open-drain output 

• Output logic: Active "H", active "L" 

• High-withstand voltage: Absolute maximum rating 28.0 V 

• Wide operation voltage range: 6.0 V to 28.0 V 

• Wide operation temperature range: Ta = −40°C to +105°C 

• Low current consumption 

 During operation: 18 μA max. (Ta = +25°C) 

• Lead-free (Sn 100%), halogen-free 

• AEC-Q100 qualified^*5

• This IC has been developed for the battery management system in accordance with ISO 26262.  ABLIC Inc. can provide a safety manual for this IC.^{*5, *6}

*1. Overcharge release voltage = Overcharge detection voltage − Overcharge hysteresis voltage 

 (Overcharge hysteresis voltage n (n = 1 to 6) is selectable from 0 V to 400 mV in 50 mV step.)

*2. Set the voltage difference between the overcharge detection voltage and overdischarge detection voltage to 2.5 V or lower. Set the voltage ratio so that the following formula is satisfied: Overcharge detection voltage × 0.7 > Overdischarge detection voltage

*3. When the S-19192 Series is used for monitoring a 3-serial-cell battery, set the overdischarge detection voltage n (n = 1 to 6) to 2.0 V or higher. 

*4. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage 

 (Overdischarge hysteresis voltage n (n = 1 to 6) is selectable from 0 V to 0.7 V in 100 mV step.) 

*5. Contact our sales representatives for details. 

*6. A Non-Disclosure Agreement is necessary when providing the documents. 

Application:

• Automotive rechargeable battery pack (EV, HEV, PHEV)