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BQ24050DSQR
Texas Instruments
IC BATT CHG LI-ION 1CELL 10SON
3519 Pcs New Original In Stock
Charger IC Lithium Ion/Polymer 10-WSON (2x2)
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*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (180 Ratings)
BQ24050DSQR
Product Overview
1415090
DiGi Electronics Part Number
BQ24050DSQR-DGManufacturer
Texas Instruments
BQ24050DSQR
Description
IC BATT CHG LI-ION 1CELL 10SONInventory
3519 Pcs New Original In Stock
Charger IC Lithium Ion/Polymer 10-WSON (2x2)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
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BQ24050DSQR 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
Current
Fault Protection
Over Temperature, Over Voltage, Short Circuit
Charge Current - Max
800mA
Battery Pack Voltage
4.2V
Voltage - Supply (Max)
28V
Interface
USB
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
BQ24050
Datasheet & Documents
Manufacturer Product Page
BQ24050DSQR Specifications
HTML Datasheet
BQ24050DSQR-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
296-38870-6
296-38870-2
296-38870-1
BQ24050DSQR-DG
Standard Package
3,000
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
包裝完好，沒有任何破損，讓我感受到他們的專業。
de desembre 02, 2025
DiGi Electronics’s stock levels are consistently sufficient to meet our demands.
de desembre 02, 2025
The interface is user-friendly, allowing me to shop comfortably without confusion.
de desembre 02, 2025
I was particularly impressed by the quick response I received from their support team.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the BQ24050DSQR in a space-constrained wearable device with a 1S Li-ion battery?
When integrating the BQ24050DSQR into compact wearables, the primary risks include thermal buildup due to its 10-WSON (2x2) package with exposed pad, especially when charging at higher currents near 800mA. Ensure adequate PCB copper for heat dissipation and avoid placing temperature-sensitive components nearby. Additionally, verify USB input stability—since the BQ24050DSQR lacks input current limiting, transients from unregulated USB sources can stress the IC. Use a TVS diode on the input and consider current programming via external resistor to derate from max 800mA in thermally limited enclosures to prevent intermittent thermal shutdowns that disrupt charge cycles.
How does the BQ24050DSQR compare to the MCP73831 when selecting a charger IC for a low-cost 1-cell Li-ion medical sensor?
The BQ24050DSQR offers advantages over the MCP73831 in systems needing robust fault protection and higher voltage tolerance: it supports up to 28V input (vs. 6.5V for MCP73831), making it safer in unregulated USB or surge-prone environments common in medical field use. However, the MCP73831 is simpler and cheaper for basic charging, while the BQ24050DSQR provides programmable charge current and tighter battery regulation. Choose the BQ24050DSQR when system-level reliability, overvoltage resilience, and long-term field reliability are critical—even at slightly higher BOM cost—and ensure the programming resistor network is properly decoupled to maintain accuracy in noisy environments.
Can I directly replace the BQ24050DSQR with the TP4056 in an existing design without modifying the PCB or circuit?
No, replacing the TP4056 with the BQ24050DSQR is not drop-in compatible and requires significant redesign. The BQ24050DSQR uses a 10-WSON (2x2) exposed pad package with different pinout and thermal pad requirements compared to the TP4056’s SOP-8, increasing PCB layout complexity. More critically, the BQ24050DSQR supports higher input voltage (up to 28V vs. 6.5V) and USB interface logic, while the TP4056 lacks overvoltage protection. If upgrading for reliability, redesign the layout, update charge current programming resistors, and add input filtering to avoid latch-up or thermal issues due to mismatched expectations in the power path.
What are the long-term reliability concerns when operating the BQ24050DSQR at elevated ambient temperatures above 100°C?
Operating the BQ24050DSQR near its maximum junction temperature of 125°C increases long-term failure risk due to accelerated electromigration and thermal cycling fatigue, especially in industrial or automotive edge applications. Even if within spec, sustained high temperatures reduce charge controller accuracy and stress external components (e.g., ceramic capacitors). To mitigate, derate the max charge current below 800mA, optimize PCB thermal vias under the exposed pad, and use a thermal relief-aware footprint. Monitor TJ in early prototypes with IR imaging or calculated θJA to ensure sustained operation stays below 110°C for MTBF targets exceeding 10 years.
What PCB layout practices should be followed to ensure stable operation of the BQ24050DSQR in noisy IoT devices powered via long USB cables?
In noisy environments with long USB cables, the BQ24050DSQR may experience voltage droop or high-frequency ringing on the input, leading to false fault triggers. Use a minimum 10μF ceramic input capacitor placed within 3mm of the IN and GND pins, and add a 1Ω ferrite bead in series with the input followed by additional bulk capacitance to filter cable inductance. Route feedback and current-setting resistors with short traces to avoid noise coupling, and guard them with grounded copper. Ensure the exposed thermal pad is solidly connected to a large GND plane with multiple thermal vias to reduce impedance and improve stability under dynamic load changes.
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.
BQ24050DSQR CAD Models
Texas Instruments BQ24050DSQR PCB symbols & footprints
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