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BQ2018TS-E1 Equivalent & Substitute Parts
Part Overview
The BQ2018TS-E1 is an active battery monitor IC from Texas Instruments designed for multi-chemistry battery applications supporting 1 to 4 cells. This Power Management (PMIC) component operates via HDQ interface and is housed in an 8-TSSOP surface mount package. The device is ROHS3 compliant and currently in active production status with 1571 units in stock. Substitute parts are identified when equivalent functional performance, package compatibility, and electrical specifications align with the original component's operational parameters.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | BQ2018TS-E1 |
| Manufacturer | Texas Instruments |
| Function | Battery Monitor |
| Battery Chemistry Support | Multi-Chemistry |
| Cell Count Range | 1 ~ 4 |
| Interface | HDQ |
| Package Type | 8-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -20°C ~ 70°C (TA) |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for the BQ2018TS-E1 are classified based on the following substitution criteria:
Parametric Equivalent Classification: Parts that maintain identical or functionally equivalent specifications across all critical parameters including package type, mounting method, operating temperature range, and interface protocol.
Manufacturer Recommended Classification: Parts approved by the original manufacturer as direct functional replacements, though with potential variations in supported battery chemistry or cell count ranges.
The substitution logic is strictly determined by:
- Identical package configuration (8-TSSOP form factor)
- Surface mount compatibility
- Operating temperature range alignment (-20°C ~ 70°C)
- Compliance certifications (ROHS3, REACH Unaffected, EAR99)
- Functional role as battery monitor IC
Parameter Comparison
| Parameter | BQ2018TS-E1 | BQ26200PW | DS2781E+ |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Analog Devices Inc./Maxim Integrated |
| Function | Battery Monitor | Battery Monitor | Battery Monitor |
| Battery Chemistry | Multi-Chemistry | Multi-Chemistry | Lithium Ion/Polymer |
| Cell Count Range | 1 ~ 4 | 1 ~ 4 | 1 ~ 2 |
| Interface | HDQ | HDQ | 1-Wire |
| Package Type | 8-TSSOP (0.173", 4.40mm Width) | 8-TSSOP (0.173", 4.40mm Width) | 8-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -20°C ~ 70°C (TA) | -20°C ~ 70°C (TA) | -20°C ~ 70°C (TA) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active | Active |
| Inventory Availability | 1571 Pcs | 1715 Pcs | 1202 Pcs |
Engineering Selection Recommendations
BQ26200PW (Parametric Equivalent): This Texas Instruments component provides identical multi-chemistry battery chemistry support and 1 to 4 cell count capability. Both parts share the same HDQ interface protocol and 8-TSSOP package footprint. Operating temperature ranges, RoHS compliance, and product status are equivalent. This part represents the closest parametric match for direct substitution in multi-chemistry battery monitoring applications.
DS2781E+ (Manufacturer Recommended): This Analog Devices Inc./Maxim Integrated part maintains the same 8-TSSOP package, surface mount configuration, and operating temperature range. However, it supports only 1 to 2 cells and is optimized for Lithium Ion/Polymer chemistry exclusively. The interface protocol differs (1-Wire versus HDQ). This part is suitable only for applications requiring lithium-based battery monitoring with single or dual cell configurations. All three parts maintain active production status and full compliance certifications.
Frequently Asked Questions (FAQ)
Q: Can BQ26200PW directly replace BQ2018TS-E1 in existing designs?
A: Yes. BQ26200PW is a parametric equivalent with identical multi-chemistry support, cell count range (1-4), HDQ interface, 8-TSSOP package, and operating temperature specifications. No design modifications are required.
Q: Is DS2781E+ compatible with multi-chemistry battery applications?
A: No. DS2781E+ is optimized exclusively for Lithium Ion/Polymer chemistry and supports only 1 to 2 cells. It is not suitable for multi-chemistry applications requiring 3 to 4 cell support.
Q: What is the primary difference between DS2781E+ and the other substitutes?
A: DS2781E+ uses 1-Wire interface protocol instead of HDQ, supports only lithium-based chemistry, and is limited to 1 to 2 cells. These differences require firmware and circuit design modifications for implementation.
Q: Are all three parts available in the same package configuration?
A: Yes. All three parts use the 8-TSSOP (0.173", 4.40mm Width) surface mount package, ensuring identical PCB footprint compatibility.
Q: Do all substitute parts meet the same compliance requirements?
A: Yes. BQ26200PW, DS2781E+, and BQ2018TS-E1 are all ROHS3 compliant, REACH unaffected, and classified under EAR99 export control.
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