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BQ29729DSER Equivalent & Substitute Parts
Part Overview
The BQ29729DSER is a battery protection integrated circuit manufactured by Texas Instruments, designed for single-cell lithium-ion and lithium-polymer battery applications. This active product provides comprehensive fault protection including over-current, over-voltage, under-voltage, and short-circuit detection in a compact 6-WSON surface-mount package. Equivalent and substitute parts are identified based on matching electrical function, battery chemistry compatibility, cell count, fault protection capabilities, package specifications, and operating temperature range.
Substiute Parts
Key Parameters
| Parameter | BQ29729DSER |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Power Management (PMIC) |
| Function | Battery Protection |
| Battery Chemistry | Lithium Ion/Polymer |
| Number of Cells | 1 |
| Fault Protection | Over Current, Over/Under Voltage, Short Circuit |
| Package / Case | 6-WFDFN |
| Supplier Device Package | 6-WSON (1.5x1.5) |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Product Status | Active |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the BQ29729DSER are qualified based on the following criteria:
Electrical Function Equivalence: All substitute parts maintain identical battery protection functionality with over-current, over-voltage, under-voltage, and short-circuit fault detection.
Battery Chemistry & Cell Count: All substitutes are rated for single-cell lithium-ion and lithium-polymer battery applications, matching the primary application domain.
Package Compatibility: All substitute parts use the 6-WFDFN package with 6-WSON (1.5x1.5) supplier device package specification, ensuring mechanical and electrical compatibility on printed circuit boards designed for the BQ29729DSER.
Operating Temperature Range: All substitutes operate across the -40°C to 85°C temperature range, maintaining thermal performance equivalence.
Compliance & Regulatory Status: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring regulatory and environmental compatibility.
Packaging Options: Substitutes are available in both Cut Tape (CT) & Digi-Reel and Tape & Reel (TR) configurations to accommodate different procurement and assembly workflows.
Parameter Comparison
| Part Number | Manufacturer | Function | Battery Chemistry | Cells | Fault Protection | Package | Operating Temp | Product Status | Packaging Type | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| BQ29729DSER | Texas Instruments | Battery Protection | Li-Ion/Polymer | 1 | OC, OV/UV, SC | 6-WFDFN | -40°C ~ 85°C | Active | Cut Tape & Digi-Reel | 6,371 |
| BQ29700DSER | Texas Instruments | Battery Protection | Li-Ion/Polymer | 1 | OC, OV/UV, SC | 6-WFDFN | -40°C ~ 85°C | Active | Cut Tape & Digi-Reel | 47,300 |
| BQ29700DSET | Texas Instruments | Battery Protection | Li-Ion/Polymer | 1 | OC, OV/UV, SC | 6-WFDFN | -40°C ~ 85°C | Active | Tape & Reel | 18,360 |
| BQ29701DSER | Texas Instruments | Battery Protection | Li-Ion/Polymer | 1 | OC, OV/UV, SC | 6-WFDFN | -40°C ~ 85°C | Active | Cut Tape & Digi-Reel | 40,850 |
| BQ29701DSET | Texas Instruments | Battery Protection | Li-Ion/Polymer | 1 | OC, OV/UV, SC | 6-WFDFN | -40°C ~ 85°C | Active | Tape & Reel | 10,259 |
| BQ29702DSER | Texas Instruments | Battery Protection | Li-Ion/Polymer | 1 | OC, OV/UV, SC | 6-WFDFN | -40°C ~ 85°C | Active | Cut Tape & Digi-Reel | 20,238 |
| BQ29702DSET | Texas Instruments | Battery Protection | Li-Ion/Polymer | 1 | OC, OV/UV, SC | 6-WFDFN | -40°C ~ 85°C | Active | Tape & Reel | 1,458 |
| BQ29703DSER | Texas Instruments | Battery Protection | Li-Ion/Polymer | 1 | OC, OV/UV, SC | 6-WFDFN | -40°C ~ 85°C | Active | Tape & Reel | 18,025 |
| BQ29703DSET | Texas Instruments | Battery Protection | Li-Ion/Polymer | 1 | OC, OV/UV, SC | 6-WFDFN | -40°C ~ 85°C | Active | Tape & Reel | 1,271 |
| BQ29704DSER | Texas Instruments | Battery Protection | Li-Ion/Polymer | 1 | OC, OV/UV, SC | 6-WFDFN | -40°C ~ 85°C | Active | Tape & Reel | 35,200 |
| BQ29704DSET | Texas Instruments | Battery Protection | Li-Ion/Polymer | 1 | OC, OV/UV, SC | 6-WFDFN | -40°C ~ 85°C | Active | Tape & Reel | 883 |
Engineering Selection Recommendations
All listed substitute parts maintain active product status with Texas Instruments, ensuring ongoing manufacturer support and supply chain stability. Each substitute part carries ROHS3 compliance and REACH unaffected designation, meeting current environmental and regulatory requirements for electronic component procurement.
Selection between Cut Tape & Digi-Reel and Tape & Reel packaging options depends on assembly process requirements. Cut Tape packaging suits lower-volume or manual assembly workflows, while Tape & Reel packaging is optimized for high-speed automated pick-and-place assembly operations.
Inventory availability varies across substitute part numbers. BQ29700DSER offers the highest inventory level at 47,300 units, while BQ29704DSET and BQ29702DSET present lower inventory positions. Component selection should account for procurement lead times and production volume requirements.
Frequently Asked Questions (FAQ)
Q: Can BQ29700DSER replace BQ29729DSER in existing designs?
A: Yes. Both parts share identical electrical function, battery chemistry support, cell count, fault protection capabilities, package specification (6-WFDFN), operating temperature range (-40°C to 85°C), and compliance status. Direct substitution is electrically and mechanically compatible.
Q: What is the difference between DSER and DSET packaging designations?
A: DSER indicates Cut Tape (CT) & Digi-Reel packaging, suitable for component reels in standard tape format. DSET indicates Tape & Reel (TR) packaging, optimized for automated assembly equipment. Both contain identical die and electrical performance; packaging format differs only in presentation and handling.
Q: Are all substitute parts manufactured by Texas Instruments?
A: Yes. All listed substitute parts are manufactured by Texas Instruments, maintaining consistent quality standards, reliability specifications, and manufacturer support.
Q: Do substitute parts maintain the same operating temperature range?
A: Yes. All substitute parts operate across -40°C to 85°C ambient temperature range, matching the BQ29729DSER specification.
Q: What compliance certifications apply to these substitute parts?
A: All parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity level rating.
Q: Can I mix packaging types (DSER and DSET) in the same production run?
A: Yes. Both packaging types contain identical electrical components and performance characteristics. Mixing is permissible from an electrical standpoint; however, assembly process compatibility should be verified with your manufacturing equipment specifications.
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