BQ27520-G4 - Uncategorized TEXAS INSTRUMENTS - Free user manual and instructions
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| Product Type | Integrated Circuit (Battery Fuel Gauge) |
| Brand | Texas Instruments |
| Model | BQ27520-G4 |
| Category | Battery Management IC |
| Package Type | DSBGA (2mm x 3mm, 12-Bump) |
| Operating Voltage Range | 2.5V to 4.5V |
| Battery Chemistry | Single-Cell Li-Ion or Li-Polymer |
| Key Functions | State-of-Charge (SOC), Voltage, Current, Temperature Monitoring |
| Communication Interface | I2C and HDQ |
| Accuracy | ±1% SOC error typical |
| Quiescent Current | Typical 22 µA in normal mode |
| Protection Features | Overvoltage, Undervoltage, Short Circuit, Overcurrent |
| Operating Temperature Range | -40°C to +85°C |
| Integrated Features | Impedance Track™ algorithm, Flash memory |
| Maintenance | Not required; calibration via software |
| Safety Certifications | RoHS, Green (per TI) |
| Spare Parts Availability | Standard IC; purchased through distributors |
| Repairability | Surface-mount soldering required; not user-serviceable |
| Documentation | Datasheet, Application Notes, User Manual (PDF) |
Frequently Asked Questions - BQ27520-G4 TEXAS INSTRUMENTS
How do I connect the BQ27520-G4 to my battery pack?
Connect the BAT pin to the positive terminal of the cell and GND to negative. Ensure proper decoupling capacitors as per datasheet.
What communication protocols does the BQ27520-G4 support?
It supports I2C and HDQ interfaces for reading data and configuration.
How accurate is the state-of-charge estimation?
The Impedance Track algorithm provides ±1% SOC accuracy over life of battery.
Can I use this IC with multiple cells in series?
No, it is designed for single-cell Li-ion/Li-polymer only.
Is the BQ27520-G4 suitable for high-drain applications?
Yes, it supports continuous current up to 1.5A typical and can measure high rates with external sense resistor.
How do I program the device?
Use the TI Battery Management Studio (bqStudio) software to calibrate and configure parameters via I2C.
What is the power consumption of the fuel gauge?
Typical quiescent current is 22 µA in normal mode, and sleep mode reduces to 4 µA.
Does it include internal temperature sensing?
Yes, it has an internal temperature sensor for battery temperature monitoring.
What are the required external components?
Typically a 0.1 µF capacitor on VDD and a 10 Ω resistor on REGIN, plus a sense resistor for current measurement.
Where can I download the full datasheet and user manual?
The datasheet and application notes are available on TI's website (www.ti.com) under the product page.
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USER MANUAL BQ27520-G4 TEXAS INSTRUMENTS
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Brand : TEXAS INSTRUMENTS
Model : BQ27520-G4
Category : Uncategorized