BQ27421YZFR-G1A vs BQ27421-G1 Comparison
Detailed side-by-side comparison of BQ27421YZFR-G1A by Texas Instruments and BQ27421-G1 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 | BQ27421YZFR-G1A | BQ27421-G1 |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Category | Battery Management | Battery Management |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.82 | $0.98 |
| Battery Type | Lithium-Ion / Lithium-Polymer | Single-cell Li-Ion / Li-Polymer |
| 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) | — |
| Package | DSBGA-9 (YZF) | 9-ball DSBGA (YZF), 1.6 mm x 1.6 mm |
| Mounting Type | Surface Mount | Surface Mount |
| Integrated Sense Resistor | Yes | 7 mΩ (typical, between BAT and SRX) |
| Fuel Gauge Algorithm | Impedance Track | — |
| Reported Parameters | SOC (%), Voltage (mV), Current (mA), Temperature (C), Remaining Capacity (mAh) | Voltage, current, temperature, SOC (%), remaining capacity (mAh), runtime (min) |
| I2C Address (Default) | 0x55 | — |
| MSL Rating | MSL1 (per JLCPCB) | — |
| RoHS Status | Compliant | Compliant |
| Battery Monitor IC Function | Fuel Gauge / Battery Monitor | — |
| Function | — | System-side fuel gauge with integrated sense resistor |
| 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 |
| 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 |
| Sense Resistor Type | — | Internal integrated (no external shunt required) |
| Gauge Algorithm | — | Impedance Track (TI proprietary) |
| Configuration Method | — | Pre-programmed chemistry profiles (no in-system firmware required) |