BQ79881-Q1 vs BQ79826Z-Q1 Comparison
Detailed side-by-side comparison of BQ79881-Q1 by Texas Instruments and BQ79826Z-Q1 by Texas Instruments. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | BQ79881-Q1 | BQ79826Z-Q1 |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Category | Battery Management | Battery Management |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $7.45 | $12.40 |
| Product Type | UIR Sensor with Pack-Level EIS | 26S/24S stackable battery monitor with EIS engine |
| Function | Battery monitor with EIS, voltage, current, insulation resistance monitoring | — |
| HV Measurement Accuracy | <0.4% (ASIL-D) | — |
| Single-Ended Measurement Range | 0.3 V to 5 V | — |
| Pack Voltage Measurements | 2 (fast) | — |
| VI Sync within BQ79881 | 0 us | — |
| VI Sync with Cell Monitor | 5 us typical | — |
| Functional Safety | ASIL-D capable (ISO 26262) | ISO 26262 up to ASIL-D (system level) |
| Automotive Qualification | AEC-Q100 | AEC-Q100 Grade 1 |
| Package | LQFP-48 (7x7 mm) with EP | 100-pin HTQFP (PZS), 12x12 mm, 0.4 mm pitch |
| Mounting Type | Surface Mount | Surface Mount with PowerPAD |
| EIS Engine | Integrated (pack-level) | Integrated electrochemical impedance spectroscopy |
| Insulation Resistance Monitoring | Yes (UIR function) | — |
| Target Application | EV/BMS HV Automotive | — |
| MSL Level | [DATA_NEEDED: MSL level] | — |
| RoHS Status | Compliant | Compliant |
| Cell Count Supported | — | Up to 26 series cells (stackable to higher counts) |
| Cell Voltage Accuracy | — | ±1.25 mV |
| Voltage Measurement Accuracy | — | < 2 mV across -40°C to +125°C |
| Passive Balancing Current | — | Up to 300 mA per cell |
| Integrated Protection | — | OV/UV cell-protector comparators |
| Operating Temperature Range | — | -40°C to +125°C |
| Companion Pack Monitor | — | BQ79881-Q1 |
| Limp Home Mode | — | Supported (automotive) |
| Typical Supply Voltage Range | — | [DATA_NEEDED: typical supply voltage] |
| Communication Interface | — | Isolated daisy-chain UART/SPI |