Automotive, 125°C Operation, Battery Monitoring IC for 3-Serial to 6-Serial Cell Pack S-19193 Series

Product Overview Standard Circuit Example: 6-serial cell HTSSOP-16 (FR016-A)

This IC 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. By cascade connection, it is possible to protect 7-serial or more cells lithium-ion rechargeable battery pack. In addition, this IC 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: 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: 2.300 V to 4.500 V^*1
Accuracy ±50 mV

Overdischarge detection voltage n: 1.000 V to 3.000 V (100 mV step)^*2
Accuracy ±80 mV

Overdischarge release voltage n: 1.000 V to 3.300 V^*3
Accuracy ±100 mV

Self-test results to confirm overcharge and overdischarge detection operations can be output from the OUT1 pin and the OUT2 pin.

Cascade connection function:

Battery voltage monitoring of multiple modules is possible by connecting the upper module output to the CASI1 pin and the CASI2 pin.

Each delay time is settable by an internal circuit only (External capacitors are not necessary).^*4

Detection delay time: 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms, 16 ms, 32 ms, 64 ms, 128 ms, 256 ms

Release delay time: 0.25 ms, 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms, 16 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
OUT2 pin: Overcharge detection signal

Separate:
OUT1 pin: Overcharge detection signal
OUT2 pin: Overdischarge detection signal

OUT1 pin, OUT2 pin output form

CMOS output

OUT1 pin, OUT2 pin output logic

Active "H"

High-withstand voltage

Absolute maximum rating 28.0 V

Wide operation voltage range

4.8 V to 28.0 V

Wide operation temperature range

Ta = -40°C to +125°C

Low current consumption

During operation: 20 μA max. (Ta = +25°C)

Lead-free (Sn 100%), halogen-free

AEC-Q100 in process^*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 is selectable from 0 V to 400 mV in 50 mV step.) *2. When this IC is used for monitoring a 3-serial-cell battery, set the overdischarge detection voltage n to 1.6 V or higher. *3. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage
(Overdischarge hysteresis voltage n is selectable from 0 V to 0.7 V in 100 mV step.) *4. Set the delay time to detection delay time > release delay time. *5. Contact our sales representatives for details. *6. A Non-Disclosure Agreement is necessary when providing the documents.

Remark n = 1 to 6

Application

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