BQ294704DSGT
The BQ2947 is a second-level overvoltage protector for 2-, 3- or 4-series cell Li-ion battery packs, monitoring each cell and triggering an external FET off-state when any cell exceeds its overvoltage threshold (selectable from 4.125 V to 4.6 V). It uses a single-pin output drive with an external delay capacitor to set the fault response time and consumes only 1 uA typical operating current. It is intended as a backup protection device used alongside a primary battery management IC.
- Package
- WSON-8
Product overview
The BQ2947 is a second-level overvoltage protector for 2-, 3- or 4-series cell Li-ion battery packs, monitoring each cell and triggering an external FET off-state when any cell exceeds its overvoltage threshold (selectable from 4.125 V to 4.6 V). It uses a single-pin output drive with an external delay capacitor to set the fault response time and consumes only 1 uA typical operating current. It is intended as a backup protection device used alongside a primary battery management IC.
- Manufacturer
- TI
- Part number
- BQ294704DSGT
- Category
- Battery Management
- Package
- WSON-8
- Packaging
- Tape & Reel
- Condition
- New & Original
- Compliance
- RoHS Compliant
- Lifecycle
- Confirm with manufacturer
- Lead time / MOQ
- Confirm with quotation
Technical parameters
34 parametersConstruction
- BQ294700, RIN = 1kΩ
- 4 V
- BQ294701, RIN = 1kΩ
- 4 V
- BQ294702, RIN = 1kΩ
- 4 V
- BQ294703, RIN = 1kΩ
- 4 V
- BQ294704, RIN = 1kΩ
- 4 V
- BQ294705, RIN = 1kΩ
- 4 V
- VOV BQ294706, RIN = 1kΩ
- 4 V
- BQ294707, RIN = 1kΩ
- 4 V
- BQ294708, RIN = 1kΩ
- 4 V
- BQ294711, RIN = 1kΩ
- 4 V
- BQ294712, RIN = 1kΩ
- 4 V
- BQ294713, RIN = 1kΩ
- 4 V
- BQ294715, RIN = 1kΩ
- 3 V
- VHYS OV Detection Hysteresis BQ2947
- 300 mV
- VOA OV Detection Accuracy TA = 25°C
- 10 mV
- OV Detection Accuracy TA = 0°C
- 20 mV
- ICELL
- 1.1 µA
- VDD = 14.4V, IOL = 100 µA measured into
- 250 mV
- IOUTH = 14.4V
- 4. 5mA
- IOUTL
- 14 mA
- VOUT VDD = 14.4V, IOL = 100 µA measured into
- 250 mV
- IOUTLK OUT pin leakage VDD = 14.4V
- 100 nA
- tCD_GND
- 170 ms
Performance
- Supply voltage VDD–VSS
- 30 V
- Input voltage V4V3, V3V2, V2V1, V1–VSS, or CD–VSS
- 30 V
- Output voltage OUT–VSS
- 30 V
- Lead temperature (soldering, 10s)
- 300
- Storage temperature, Tstg
- 150
- Supply voltage
- 20 V
- Input voltage range V4V3, V3V2, V2V1, V1–VSS, or CD–VSS
- 5 V
- Operating ambient temperature range
- 110 °C
- Across Temperature TA = 60°C
- 24 mV
- IDD Supply Current
- 1 2µA
- IIN Input Current at Vx Pins
- 0. 1µA
Specifications & documentation
Use the official manufacturer documentation to verify electrical characteristics, package dimensions and operating limits before design approval.
Frequently asked questions
Common pre-quotation questions and selection notes to help you verify key parameters and sourcing before requesting a quote.
How do I verify the part is genuine / avoid counterfeit?
Buy only from authorized or franchised channels. On receipt, check: (1) laser-etched markings that solvent will not remove; (2) batch / lot code consistent between label and device; (3) original reel or tube packaging; (4) request traceability documents (CoC, date code). For critical parts, third-party X-ray / decapsulation testing is recommended.
How do I read the markings / date code on a chip?
Most active ICs use a 4-digit date code YYWW (year + week, e.g. 2345 = 2023 week 45). The top mark is manufacturer logo + base part number + lot code. For SMD code lookup, search by "marking code + package" on AllDataSheet / Octopart / LCSC.
What does the package code mean (TO-220, SOT-23, QFP…)?
Package codes describe the physical form factor and pin layout — critical when sourcing, because electrically equivalent parts in different packages will not fit the PCB. Common: TO-220 (3-terminal power), SOT-23 (3-pin small signal), DIP / SOIC (through-hole / SMD ICs), QFP / QFN (MCUs, processors).
What if my original model is discontinued (EOL / NRND)?
Three options: (1) the manufacturer’s recommended replacement; (2) franchised distributor legacy stock; (3) a functionally compatible cross-brand part — provided pinout and key parameters match. Always evaluate on a real board before mass swap.
What is the minimum order quantity (MOQ) and lead time?
We support both sample and volume orders. Minimum order quantity, stock availability and lead time are confirmed per inquiry — tell us your model and quantity and we will quote. Sample quantities for design validation are supported.
Can I get the datasheet and samples?
The full datasheet is linked on this page. For parts without a direct datasheet, we can locate the manufacturer document on request. Sample requests are supported — contact us with your model and quantity.
Request confirmation of current stock, date code, packaging, price and delivery terms. Product information does not constitute a binding offer; final specifications are confirmed with your quotation.