BQ29440DRBR Texas Instruments Integrated Circuit (Small Outline No-lead) In Stock
BQ29440DRBR is a secondary over-voltage protection IC for 2-4 cell series Li-Ion/LiPoly battery packs with 4.35V threshold, 28V max input, single-channel protection. From $0.95, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- BQ29440DRBR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.9548(MOQ 156)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Secondary over-voltage protection for 2-4 series Li-Ion/LiPoly cells with precise 4.325V–4.375V threshold
- Supports up to 28V maximum input voltage for robust battery pack protection
- Single-channel design in compact 8-pin WSON (S-PDSO-N8) package for space-constrained applications
- Wide operating temperature range of -40°C to +110°C for industrial and automotive use
- RoHS-compliant, lead-free construction (JESD-609 e4)
Applications
The BQ29440DRBR is widely used in portable electronics such as laptops, power banks, and cordless tools requiring secondary protection for 2-4 cell Li-Ion or LiPolymer battery packs. It provides a fail-safe layer against primary protection IC failures, making it essential in high-reliability battery management systems. The device also suits industrial and automotive battery applications where the extended -40°C to +110°C temperature range ensures stable operation under harsh conditions.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | Battery over-voltage protection(Min/Max)(V) : 4.325 and 4.375 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | SECONDARY BATTERY PROTECTOR |
| Input Voltage-Max | 28V |
| JESD-30 Code | S-PDSO-N8 |
| JESD-609 Code | e4 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 25V |
| Supply Voltage-Min (Vsup) | 4V |
| Supply Voltage-Nom (Vsup) | 17V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Philippines |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the over-voltage protection threshold of the BQ29440DRBR?
The BQ29440DRBR provides secondary over-voltage protection with a threshold range of 4.325V (minimum) to 4.375V (maximum) per cell, targeting 4.35V Li-Ion/LiPolymer chemistry. This tight tolerance ensures reliable protection without premature triggering during normal charging.
How many battery cells can the BQ29440DRBR protect, and what is its maximum input voltage?
The BQ29440DRBR supports 2 to 4 Li-Ion or LiPolymer cells connected in series. It is rated for a maximum input voltage of 28V, making it suitable for multi-cell battery packs used in laptops, power tools, and portable medical devices.
What package type does the BQ29440DRBR use, and is it RoHS compliant?
The BQ29440DRBR is housed in an 8-pin Small Outline No-Lead (WSON/VSON, JESD-30 code S-PDSO-N8) package, offering a compact footprint ideal for space-constrained PCB designs. It is fully RoHS-compliant and lead-free, conforming to JESD-609 e4 requirements.
Can the BQ29440DRBR be used as the primary battery protection IC?
No, the BQ29440DRBR is designed exclusively as a secondary (backup) over-voltage protection device. It is intended to act as a safety layer in case the primary battery protection IC fails, ensuring the battery pack is not damaged by overcharging. A dedicated primary protection IC should also be used in the design.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 156+ | $1.9300 | $301.08 |
| 1000+ | $1.2800 | $1280.00 |
| 3000+ | $1.2400 | $3720.00 |
| 6000+ | $1.2200 | $7320.00 |
| 10000+ | $1.1400 | $11400.00 |
| 100000+ | $0.9548 | $95480.00 |
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