3-Serial to 6-Serial Cell Battery Monitoring ICs for Automotive Use

ABLIC Inc. today launched the S-19192 Series of 3-serial to 6-serial cell battery monitoring ICs for automotive use. These battery monitoring ICs are designed for monitoring the state of lithium-ion batteries.

The S-19192 series has an operating voltage range of 6V to 28V and an operating temperature range of −40°C to +105°C. They also feature a low current consumption during operation of 18 µA max. (Ta = +25°C).

The new S-19192 Series of products is a 3-serial to 6-serial cell battery monitoring IC for automotive use with the following characteristics: (1) robust standalone monitoring capable of operating without microcontroller software, (2) the capability to operate as a secondary monitoring IC for automotive BMS, which significantly contributes to system safety, and (3) a self-diagnosis function for detecting random failures.

These characteristics deliver solid automotive BMS capability in a simple configuration for greater safety against failures and other issues.

S-19192 (16-Pin HTSSOP package)

Summary of 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 (50 mV step)
    • Accuracy ±50 mV
  • Overdischarge detection voltage n (n = 1 to 6): 1.500 V to 3.000 V (100 mV step)
    • Accuracy ±80 mV
  • Overdischarge release voltage n (n = 1 to 6): 1.500 V to 3.300 V (100 mV step)
    • Accuracy ±100 mV
• Self-test function to confirm overcharge and overdischarge detection operations is available.
  • Delay time shortening function during self-test is selectable from "available" / "unavailable".
• Each delay time is settable by an internal circuit only (External capacitors are not necessary).
  • Detection delay time is selectable: 32 ms, 64 ms, 128 ms, 256 ms
  • Release delay time is selectable: 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 output pins
  • OUT1 pin: Overcharge and overdischarge detection results
  • OUT2 pin: Self-test results
• Output form is selectable
  • CMOS output, Nch open-drain output
• Output logic is selectable
  • Active "H", active "L"
• High-withstand voltage
  • Absolute maximum rating 28V
• Wide operation voltage range
  • 6V to 28V
• 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 in process