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BQ24041DSQR
Texas Instruments
IC BATT CHG LI-ION 1CELL 10WSON
17323 Pcs New Original In Stock
Charger IC Lithium Ion/Polymer 10-WSON (2x2)
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5.0 / 5.0
- (69 Ratings)
BQ24041DSQR
Product Overview
1260246
DiGi Electronics Part Number
BQ24041DSQR-DGManufacturer
Texas Instruments
BQ24041DSQR
Description
IC BATT CHG LI-ION 1CELL 10WSONInventory
17323 Pcs New Original In Stock
Charger IC Lithium Ion/Polymer 10-WSON (2x2)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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BQ24041DSQR Technical Specifications
Category
Power Management (PMIC), Battery Chargers
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Battery Chemistry
Lithium Ion/Polymer
Number of Cells
1
Current - Charging
Constant - Programmable
Programmable Features
-
Fault Protection
Over Temperature, Over Voltage, Short Circuit
Charge Current - Max
1A
Battery Pack Voltage
4.2V
Voltage - Supply (Max)
28V
Interface
-
Operating Temperature
0°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
10-WFDFN Exposed Pad
Supplier Device Package
10-WSON (2x2)
Base Product Number
BQ24041
Datasheet & Documents
Manufacturer Product Page
BQ24041DSQR Specifications
HTML Datasheet
BQ24041DSQR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
296-46410-1
BQ24041DSQR-DG
2156-BQ24041DSQR
TEXTISBQ24041DSQR
296-46410-6
296-46410-2
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
配送速度非常快，幫我省下不少等待時間，棒極了！
de desembre 02, 2025
L’efficacité de leur logistique permet de recevoir les commandes rapidement, avec un suivi détaillé à chaque étape.
de desembre 02, 2025
Their product quality is consistently excellent; I've purchased multiple times and never been disappointed.
de desembre 02, 2025
Their after-sales service continues to impress me with its professionalism.
de desembre 02, 2025
The affordability combined with quality makes DiGi Electronics my go-to choice.
de desembre 02, 2025
Logistics operations are seamlessly coordinated, resulting in on-time deliveries every time.
de desembre 02, 2025
I appreciate their upfront communication about costs and support services.
de desembre 02, 2025
Their reliable after-sales support helps me trust their brand fully.
de desembre 02, 2025
I appreciate how efficiently DiGi Electronics handles my queries, making my experience smooth.
de desembre 02, 2025
Their support team is attentive and always ready to help.
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Frequently Asked Questions (FAQ)
What are the key thermal design considerations when using the BQ24041DSQR in a high-ambient temperature environment above 85°C?
When deploying the BQ24041DSQR in environments exceeding 85°C, thermal management is critical due to its 10-WSON (2x2) package with an exposed pad. Even with programmable charge currents up to 1A, internal power dissipation during constant-current charging can cause junction temperatures to approach or exceed the 125°C max TJ limit. To mitigate thermal risk, ensure a robust PCB layout with multiple thermal vias under the exposed pad connected to a large ground plane. Avoid placing heat-generating components nearby, and consider reducing the charge current via external resistors to lower thermal stress, especially when input voltage exceeds 12V. Monitoring die temperature with an external sensor on a prototype is a recommended design-in practice to validate safe long-term operation.
Can the BQ24041DSQR safely replace the MCP73831 in a 1-cell Li-ion charger design, and what are the critical compatibility risks?
The BQ24041DSQR can replace the MCP73831 in many 1-cell Li-ion applications, but several design risks must be addressed. Unlike the MCP73831, the BQ24041DSQR lacks a built-in charge-enable pin via logic control, limiting system-level software management unless external circuitry is added. Additionally, the BQ24041DSQR supports higher input voltages (up to 28V vs. 6V), which improves robustness against supply transients but requires input filtering to protect downstream components. The 10-WSON footprint differs from the SOT-23 or DFN packages of the MCP73831, necessitating a PCB re-layout. Evaluate fault protection behavior carefully—the BQ24041DSQR provides over-temperature, over-voltage, and short-circuit protection, which is more comprehensive than basic thermal regulation in the MCP73831, offering better field reliability in unregulated environments.
How does the input voltage tolerance of the BQ24041DSQR impact system reliability in automotive or industrial power supply scenarios?
The BQ24041DSQR's 28V absolute maximum supply voltage significantly enhances reliability in automotive and industrial environments where load dumps, voltage spikes, or unregulated wall adapters are common. This allows direct connection to 12V nominal rails without requiring a pre-regulator, simplifying the BOM. However, while the IC can withstand high input voltages, its internal linear charging architecture becomes inefficient at large VIN-to-VBATT differentials, increasing thermal stress. To maintain reliability, designers should assess worst-case transient exposure and consider adding transient voltage suppression (TVS) diodes on the input rail. Also, ensure the input capacitor (X7R ceramic, ≥10V rating) is placed close to the device to filter fast transients and prevent false over-voltage triggering.
What are the risks of using the maximum 1A charge current with the BQ24041DSQR on a compact 2-layer PCB without thermal vias?
Operating the BQ24041DSQR at 1A charge current on a 2-layer PCB without thermal vias poses significant overheating risks due to its linear charging architecture and 10-WSON package’s thermal impedance. Without proper thermal conduction through ≥4 vias under the exposed pad, the junction temperature can rapidly exceed safe limits—especially with VIN > 9V—leading to thermal shutdown cycles or long-term reliability degradation. In battery-powered portable designs, this may also reduce charge efficiency and user experience. To mitigate, reduce charge current to 500mA or 750mA using the ISET resistor, increase copper area connected to GND and DRV pins, or transition to a 4-layer board in production. Always simulate or measure temperature rise under full load during prototype validation.
How does the BQ24041DSQR compare to the TP4056 in terms of safety and system-level protection for consumer wearable devices?
Compared to the TP4056, the BQ24041DSQR offers superior system-level safety for consumer wearables. While both support 1A charging for single-cell Li-ion batteries, the BQ24041DSQR includes over-voltage, over-temperature, and short-circuit fault protection, whereas the TP4056 lacks over-voltage protection and depends heavily on precise resistor setting for safety. The BQ24041DSQR’s higher input voltage tolerance (28V) also reduces risk from faulty chargers. Additionally, the BQ24041DSQR is newer, fully RoHS-compliant, and suitable for automated assembly with MSL2 rating, enhancing manufacturing yield. However, the TP4056 is cheaper and more widely available in through-hole modules—making the BQ24041DSQR better suited for safety-critical, compact surface-mount applications where long-term field reliability and supply chain traceability matter most.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
BQ24041DSQR CAD Models
Texas Instruments BQ24041DSQR PCB symbols & footprints
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