BQ2031SN Texas Instruments In Stock
BQ2031SN is a Li-Ion battery fast-charge controller IC by Texas Instruments. Key specs: single-cell charge management, constant-current/constant-voltage regulation, safety timer. Check availability and get competitive pricing with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of BQ2031SN?
- Constant-current/constant-voltage (CC/CV) Li-Ion charging algorithm
- Programmable charge current via external resistor
- Built-in safety timer for overcharge protection
- Status output pins for charge indication
- Low quiescent current for improved efficiency
What is BQ2031SN used for?
BQ2031SN is designed for portable consumer electronics requiring reliable single-cell Li-Ion battery charging, including handheld devices, PDAs, and digital cameras. It is also well-suited for medical handheld equipment and industrial portable instruments where accurate voltage regulation and safety cutoff are critical.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for BQ2031SN?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the BQ2031SN used for?
The BQ2031SN is a Li-Ion battery fast-charge controller IC from Texas Instruments. It implements a constant-current/constant-voltage (CC/CV) charging algorithm for single-cell Li-Ion batteries, making it ideal for portable electronics such as handheld devices, PDAs, and digital cameras.
What charging algorithm does the BQ2031SN use?
The BQ2031SN uses a constant-current/constant-voltage (CC/CV) algorithm. It first charges the battery at a programmed constant current until the cell voltage reaches approximately 4.2 V, then transitions to constant-voltage mode while the current tapers to a termination threshold, ensuring safe and complete charging.
How is the charge current set on the BQ2031SN?
The charge current on the BQ2031SN is set by connecting an external sense resistor between the ISET pin and ground. By selecting the appropriate resistor value, designers can program the desired fast-charge current to match the battery pack's capacity and safety requirements.
What safety features does the BQ2031SN include?
The BQ2031SN includes a programmable safety timer that terminates charging if the battery fails to reach full charge within a set time window, protecting against overcharge conditions. It also provides status output pins that indicate charge-in-progress and charge-complete states.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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