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S-8337ACEC-T8T1G Equivalent & Substitute Parts
Part Overview
The S-8337ACEC-T8T1G is a Boost Regulator Positive Output Step-Up DC-DC Controller IC manufactured by ABLIC Inc. in 8-TSSOP surface mount packaging. This device functions as a transistor driver for step-up (boost) topology applications with a single output phase, operating across a 1.8V to 6V supply voltage range. The part is classified as Not For New Designs, indicating its legacy status in the product lifecycle. Equivalent substitute parts are available from ABLIC's active product lines, offering functional compatibility with enhanced availability and active product support.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | ABLIC Inc. |
| Category | Power Management (PMIC) |
| Function | Step-Up (Boost) DC-DC Controller |
| Output Type | Transistor Driver |
| Output Configuration | Positive |
| Number of Outputs | 1 |
| Voltage Supply Range (Vcc/Vdd) | 1.8V ~ 6V |
| Switching Frequency | 257.4kHz ~ 1.134MHz |
| Duty Cycle (Max) | 89% |
| Control Features | Current Limit, Enable, Frequency Control |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 8-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the S-8337ACEC-T8T1G is determined by strict alignment across the following critical parameters:
Mandatory Matching Parameters:
- Topology: Boost (Step-Up)
- Output Type: Transistor Driver
- Output Configuration: Positive
- Number of Outputs: 1
- Voltage Supply Range: 1.8V ~ 6V
- Duty Cycle (Max): 89%
- Package / Case: 8-TSSOP (0.173", 4.40mm Width)
- Mounting Type: Surface Mount
- Operating Temperature: -40°C ~ 85°C (TA)
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
Allowable Variation Parameters:
- Switching Frequency: 280kHz ~ 1.08MHz (S-8333 series) vs. 257.4kHz ~ 1.134MHz (S-8337 series)
- Control Features: Current Limit, Frequency Control (S-8333 series) vs. Current Limit, Enable, Frequency Control (S-8337 series)
- Packaging Format: Tape & Reel (TR) or Cut Tape (CT)
- Product Status: Active (substitute parts) vs. Not For New Designs (main part)
The S-8333 series parts (S-8333CBDA-T8T1U, S-8333CCBC-T8T1U, S-8333TCDA-T8T1U, S-8333TCDB-T8T1U, S-8333TCDC-T8T1U, S-8333TCIA-T8T1U, S-8333TCIB-T8T1U, S-8333TCIC-T8T1U) and S-8337ABIA-T8T1U are functionally equivalent within the allowed parameter tolerances. The S-8337ABIA-T8T1U maintains identical electrical specifications to the main part while offering active product status and improved availability.
Parameter Comparison
| Parameter | S-8337ACEC-T8T1G | S-8333CBDA-T8T1U | S-8333CCBC-T8T1U | S-8333TCDA-T8T1U | S-8333TCDB-T8T1U | S-8333TCDC-T8T1U | S-8333TCIA-T8T1U | S-8333TCIB-T8T1U | S-8333TCIC-T8T1U | S-8337ABIA-T8T1U |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | ABLIC Inc. | ABLIC Inc. | ABLIC Inc. | ABLIC Inc. | ABLIC Inc. | ABLIC Inc. | ABLIC Inc. | ABLIC Inc. | ABLIC Inc. | ABLIC Inc. |
| Function | Step-Up DC-DC Controller | Step-Up DC-DC Controller | Step-Up DC-DC Controller | Step-Up DC-DC Controller | Step-Up DC-DC Controller | Step-Up DC-DC Controller | Step-Up DC-DC Controller | Step-Up DC-DC Controller | Step-Up DC-DC Controller | Step-Up DC-DC Controller |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Output Configuration | Positive | Positive | Positive | Positive | Positive | Positive | Positive | Positive | Positive | Positive |
| Voltage Supply Range | 1.8V ~ 6V | 1.8V ~ 6V | 1.8V ~ 6V | 1.8V ~ 6V | 1.8V ~ 6V | 1.8V ~ 6V | 1.8V ~ 6V | 1.8V ~ 6V | 1.8V ~ 6V | 1.8V ~ 6V |
| Switching Frequency | 257.4kHz ~ 1.134MHz | 280kHz ~ 1.08MHz | 280kHz ~ 1.08MHz | 280kHz ~ 1.08MHz | 280kHz ~ 1.08MHz | 280kHz ~ 1.08MHz | 280kHz ~ 1.08MHz | 280kHz ~ 1.08MHz | 280kHz ~ 1.08MHz | 257.4kHz ~ 1.134MHz |
| Duty Cycle (Max) | 89% | 89% | 89% | 89% | 89% | 89% | 89% | 89% | 89% | 89% |
| Control Features | Current Limit, Enable, Frequency Control | Current Limit, Frequency Control | Current Limit, Frequency Control | Current Limit, Frequency Control | Current Limit, Frequency Control | Current Limit, Frequency Control | Current Limit, Frequency Control | Current Limit, Frequency Control | Current Limit, Frequency Control | Current Limit, Enable, Frequency Control |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 8-TSSOP | 8-TSSOP | 8-TSSOP | 8-TSSOP | 8-TSSOP | 8-TSSOP | 8-TSSOP | 8-TSSOP | 8-TSSOP | 8-TSSOP |
| Packaging Format | Tape & Reel (TR) | Tape & Reel (TR) | Cut Tape (CT) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Cut Tape (CT) |
| Product Status | Not For New Designs | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Inventory Status | 774 Pcs New Original | 974 Pcs New Original | 728 Pcs New Original | 1053 Pcs New Original | 1002 Pcs New Original | 935 Pcs New Original | 1069 Pcs New Original | 733 Pcs New Original | 1059 Pcs New Original | 760 Pcs New Original |
Engineering Selection Recommendations
For applications currently using the S-8337ACEC-T8T1G, the S-8337ABIA-T8T1U is the primary substitute recommendation. This part maintains identical electrical specifications including switching frequency range (257.4kHz ~ 1.134MHz) and control feature set (Current Limit, Enable, Frequency Control), ensuring drop-in compatibility. The S-8337ABIA-T8T1U carries Active product status, providing long-term availability and manufacturer support compared to the legacy Not For New Designs classification of the original part.
The S-8333 series parts (S-8333CBDA-T8T1U, S-8333CCBC-T8T1U, S-8333TCDA-T8T1U, S-8333TCDB-T8T1U, S-8333TCDC-T8T1U, S-8333TCIA-T8T1U, S-8333TCIB-T8T1U, S-8333TCIC-T8T1U) are functionally equivalent alternatives with Active product status. These parts operate within a slightly narrower switching frequency range (280kHz ~ 1.08MHz) and omit the Enable control feature, retaining Current Limit and Frequency Control functionality. All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and identical 8-TSSOP packaging geometry.
Selection between Tape & Reel (TR) and Cut Tape (CT) packaging formats depends on assembly process requirements and volume specifications. All parts are manufactured by ABLIC Inc. and carry equivalent regulatory certifications (ECCN: EAR99, HTSUS: 8542.39.0001).
Frequently Asked Questions (FAQ)
Q: Can S-8333 series parts directly replace the S-8337ACEC-T8T1G?
A: S-8333 series parts are functionally equivalent within the allowed parameter tolerances. The primary difference is the absence of the Enable control feature in S-8333 variants. If the Enable pin is not utilized in the application circuit, S-8333 parts provide full functional compatibility. Switching frequency ranges differ slightly (280kHz ~ 1.08MHz for S-8333 vs. 257.4kHz ~ 1.134MHz for S-8337), but both ranges overlap sufficiently for most boost converter applications.
Q: What is the difference between Tape & Reel and Cut Tape packaging?
A: Both packaging formats contain identical die and electrical specifications. Tape & Reel (TR) packaging is supplied on continuous carrier tape suitable for automated pick-and-place assembly. Cut Tape (CT) packaging is supplied as individual segments cut from the carrier tape, typically for lower-volume or manual assembly processes. Package / Case dimensions (8-TSSOP, 0.173", 4.40mm Width) remain identical.
Q: Why is the S-8337ACEC-T8T1G marked as Not For New Designs?
A: This classification indicates the part has reached end-of-life status in ABLIC's product lifecycle. While existing inventory remains available, the manufacturer recommends using Active product alternatives for new designs. The S-8337ABIA-T8T1U provides identical specifications with Active status and ongoing manufacturer support.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the environmental and regulatory requirements of the original S-8337ACEC-T8T1G.
Q: What is the significance of Moisture Sensitivity Level 1?
A: MSL Level 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. This simplifies inventory management and reduces handling costs compared to higher MSL ratings.
Q: Can I mix packaging formats in a single production run?
A: Packaging format selection should align with assembly equipment capabilities and process specifications. While electrical specifications are identical between TR and CT formats, assembly line integration may require consistency. Consult manufacturing process documentation for specific requirements.
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