BQ27421-G1 vs BQ27421YZFR-G1A Comparison
Detailed side-by-side comparison of BQ27421-G1 by Texas Instruments and BQ27421YZFR-G1A by Texas Instruments. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Texas Instruments
BQ27421YZFR-G1A - System-Side Fuel Gauge w/ Integrated Sense Resistor | Texas Instruments
BQ27421YZFR-G1A ✓ ActiveSpecification Comparison
| Parameter | BQ27421-G1 | BQ27421YZFR-G1A |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Category | Battery Management | Battery Management |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.98 | $1.82 |
| Function | System-side fuel gauge with integrated sense resistor | — |
| Battery Type | Single-cell Li-Ion / Li-Polymer | Lithium-Ion / Lithium-Polymer |
| Battery Chemistry Supported | Li-Ion (pre-programmed profiles: 4.2 V / 4.3 V / 4.35 V max charge) | — |
| Maximum Charge Voltage (suffix A) | 4.2 V | — |
| Integrated Sense Resistor | 7 mΩ (typical, between BAT and SRX) | Yes |
| Communication Interface | I2C (up to 400 kHz, default address 0x55) | — |
| Supply Voltage (VBAT) | 2.7 V to 4.5 V | — |
| Operating Temperature | -40C to +85C | — |
| Package | 9-ball DSBGA (YZF), 1.6 mm x 1.6 mm | DSBGA-9 (YZF) |
| Sense Resistor Type | Internal integrated (no external shunt required) | — |
| Mounting Type | Surface Mount | Surface Mount |
| Gauge Algorithm | Impedance Track (TI proprietary) | — |
| Reported Parameters | Voltage, current, temperature, SOC (%), remaining capacity (mAh), runtime (min) | SOC (%), Voltage (mV), Current (mA), Temperature (C), Remaining Capacity (mAh) |
| Configuration Method | Pre-programmed chemistry profiles (no in-system firmware required) | — |
| RoHS Status | Compliant | Compliant |
| Number of Cells Supported | — | 1 (Single-Cell) |
| Supply Voltage Range | — | 2.45 V to 4.5 V |
| Operating Temperature Range | — | -40 C to +85 C |
| Supply Current (Typical) | — | 93 uA |
| Interface | — | I2C (SMBus-compatible) |
| Fuel Gauge Algorithm | — | Impedance Track |
| I2C Address (Default) | — | 0x55 |
| MSL Rating | — | MSL1 (per JLCPCB) |
| Battery Monitor IC Function | — | Fuel Gauge / Battery Monitor |