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S-8338ACAC-T8T1G Equivalent & Substitute Parts
Part Overview
The S-8338ACAC-T8T1G is a Boost Regulator Positive Output Step-Up DC-DC Controller IC manufactured by ABLIC Inc. in 8-TSSOP surface mount packaging. This part functions as a transistor driver for step-up (boost) topology power management applications with a single output phase. The device operates across a 1.8V to 6V supply voltage range with switching frequency between 257.4kHz and 1.134MHz, supporting current limit, enable, and frequency control features.
The S-8338ACAC-T8T1G carries a "Not For New Designs" product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support ongoing production requirements for existing applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | ABLIC Inc. |
| Category | Power Management (PMIC) |
| Function | Step-Up (Boost) |
| Output Type | Transistor Driver |
| Output Configuration | Positive |
| Number of Outputs | 1 |
| Voltage - Supply (Vcc/Vdd) | 1.8V ~ 6V |
| Frequency - Switching | 257.4kHz ~ 1.134MHz |
| Duty Cycle (Max) | 88.5% |
| 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-8338ACAC-T8T1G is determined by the following critical parameters:
Primary Substitution Criteria:
- Topology: Boost (Step-Up)
- Output Configuration: Positive
- Output Type: Transistor Driver
- Package / Case: 8-TSSOP (0.173", 4.40mm Width)
- Mounting Type: Surface Mount
- Operating Temperature Range: -40°C ~ 85°C (TA)
- Supply Voltage Range: 1.8V ~ 6V
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
Secondary Compatibility Parameters:
- Switching Frequency Range (must overlap or encompass application requirements)
- Maximum Duty Cycle (must meet or exceed application needs)
- Control Features (Current Limit and Frequency Control are essential; Enable feature availability noted)
Substitute parts are grouped into two categories based on control feature availability:
Category A - Full Feature Match (Current Limit, Enable, Frequency Control): S-8337ABIA-T8T1U, S-8338ACIA-T8T1U
Category B - Core Feature Match (Current Limit, Frequency Control): S-8333CBDA-T8T1U, S-8333CCBC-T8T1U, S-8333TCDA-T8T1U, S-8333TCDB-T8T1U, S-8333TCDC-T8T1U, S-8333TCIA-T8T1U, S-8333TCIB-T8T1U, S-8333TCIC-T8T1U
Parameter Comparison
| Part Number | Manufacturer | Packaging | Product Status | Vcc/Vdd Range | Switching Frequency | Duty Cycle (Max) | Control Features | Operating Temp | Package Type | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| S-8338ACAC-T8T1G | ABLIC Inc. | Tape & Reel (TR) | Not For New Designs | 1.8V ~ 6V | 257.4kHz ~ 1.134MHz | 88.5% | Current Limit, Enable, Frequency Control | -40°C ~ 85°C | 8-TSSOP | 1116 |
| S-8337ABIA-T8T1U | ABLIC Inc. | Cut Tape (CT) | Active | 1.8V ~ 6V | 257.4kHz ~ 1.134MHz | 89% | Current Limit, Enable, Frequency Control | -40°C ~ 85°C | 8-TSSOP | 760 |
| S-8338ACIA-T8T1U | ABLIC Inc. | Cut Tape (CT) | Active | 1.8V ~ 6V | 257.4kHz ~ 1.134MHz | 88.5% | Current Limit, Enable, Frequency Control | -40°C ~ 85°C | 8-TSSOP | 801 |
| S-8333CBDA-T8T1U | ABLIC Inc. | Tape & Reel (TR) | Active | 1.8V ~ 6V | 280kHz ~ 1.08MHz | 89% | Current Limit, Frequency Control | -40°C ~ 85°C | 8-TSSOP | 974 |
| S-8333CCBC-T8T1U | ABLIC Inc. | Cut Tape (CT) | Active | 1.8V ~ 6V | 280kHz ~ 1.08MHz | 89% | Current Limit, Frequency Control | -40°C ~ 85°C | 8-TSSOP | 728 |
| S-8333TCDA-T8T1U | ABLIC Inc. | Tape & Reel (TR) | Active | 1.8V ~ 6V | 280kHz ~ 1.08MHz | 89% | Current Limit, Frequency Control | -40°C ~ 85°C | 8-TSSOP | 1053 |
| S-8333TCDB-T8T1U | ABLIC Inc. | Tape & Reel (TR) | Active | 1.8V ~ 6V | 280kHz ~ 1.08MHz | 89% | Current Limit, Frequency Control | -40°C ~ 85°C | 8-TSSOP | 1002 |
| S-8333TCDC-T8T1U | ABLIC Inc. | Tape & Reel (TR) | Active | 1.8V ~ 6V | 280kHz ~ 1.08MHz | 89% | Current Limit, Frequency Control | -40°C ~ 85°C | 8-TSSOP | 935 |
| S-8333TCIA-T8T1U | ABLIC Inc. | Tape & Reel (TR) | Active | 1.8V ~ 6V | 280kHz ~ 1.08MHz | 89% | Current Limit, Frequency Control | -40°C ~ 85°C | 8-TSSOP | 1069 |
| S-8333TCIB-T8T1U | ABLIC Inc. | Tape & Reel (TR) | Active | 1.8V ~ 6V | 280kHz ~ 1.08MHz | 89% | Current Limit, Frequency Control | -40°C ~ 85°C | 8-TSSOP | 733 |
| S-8333TCIC-T8T1U | ABLIC Inc. | Tape & Reel (TR) | Active | 1.8V ~ 6V | 280kHz ~ 1.08MHz | 89% | Current Limit, Frequency Control | -40°C ~ 85°C | 8-TSSOP | 1059 |
Engineering Selection Recommendations
Primary Substitutes (Recommended for Direct Replacement):
S-8337ABIA-T8T1U and S-8338ACIA-T8T1U are the preferred substitutes. Both parts maintain identical control feature sets (Current Limit, Enable, Frequency Control) and switching frequency ranges (257.4kHz ~ 1.134MHz) as the S-8338ACAC-T8T1G. Both are Active product status parts, ensuring long-term availability and ongoing manufacturer support. S-8338ACIA-T8T1U matches the exact duty cycle specification (88.5%), while S-8337ABIA-T8T1U provides a marginally higher duty cycle (89%). The primary difference is packaging format: S-8337ABIA-T8T1U is supplied in Cut Tape (CT) format with 760 units in stock, while S-8338ACIA-T8T1U is also Cut Tape (CT) with 801 units in stock.
Secondary Substitutes (Feature-Reduced Alternatives):
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 boost controller ICs with Active product status. These parts omit the Enable control feature but retain Current Limit and Frequency Control functionality. The switching frequency range is narrower (280kHz ~ 1.08MHz) compared to the primary part. Maximum duty cycle is higher (89% versus 88.5%). These parts are suitable for applications where the Enable pin is not required and the switching frequency range is compatible with circuit design requirements. Tape & Reel packaging options provide higher inventory availability (728 to 1069 units per variant).
All substitute parts maintain identical supply voltage range (1.8V ~ 6V), operating temperature range (-40°C ~ 85°C), package type (8-TSSOP), RoHS3 compliance, and MSL rating (1 - Unlimited).
Frequently Asked Questions (FAQ)
Q: Can S-8333 series parts directly replace the S-8338ACAC-T8T1G?
A: S-8333 series parts are functionally compatible for boost controller applications but lack the Enable control feature present in the S-8338ACAC-T8T1G. If the Enable pin is not used in the existing circuit design, S-8333 variants are suitable substitutes. If the Enable function is required, use S-8337ABIA-T8T1U or S-8338ACIA-T8T1U instead.
Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?
A: Tape & Reel packaging is supplied on continuous tape reels suitable for automated pick-and-place assembly equipment. Cut Tape packaging is supplied in shorter tape segments for manual handling or lower-volume applications. Both formats contain identical die and electrical specifications. Selection depends on assembly process requirements and order quantity.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts carry ROHS3 compliance certification and MSL rating of 1 (Unlimited), matching the environmental and moisture sensitivity specifications of the S-8338ACAC-T8T1G.
Q: What is the significance of the switching frequency range difference between S-8338 and S-8333 series?
A: The S-8338ACAC-T8T1G operates at 257.4kHz ~ 1.134MHz, while S-8333 series parts operate at 280kHz ~ 1.08MHz. The S-8333 series has a narrower range with a higher minimum frequency and lower maximum frequency. Circuit designs must confirm that the application's switching frequency requirements fall within the S-8333 range before substitution.
Q: Why is the S-8338ACAC-T8T1G marked "Not For New Designs"?
A: This designation indicates the part is in mature or end-of-life phase. Existing designs using this part can continue production, but new designs should select from Active status alternatives such as S-8337ABIA-T8T1U, S-8338ACIA-T8T1U, or S-8333 series variants.
Q: Can I mix Tape & Reel and Cut Tape packaging in the same production run?
A: Yes. Both packaging formats contain identical electrical and mechanical specifications. Mixing formats is permissible from an engineering standpoint, though assembly process workflows may require separate handling procedures.
Q: What inventory levels should I consider for supply chain planning?
A: Current inventory ranges from 728 to 1116 units across all variants. S-8333TCIA-T8T1U (1069 units), S-8333TCDA-T8T1U (1053 units), and S-8333TCIC-T8T1U (1059 units) offer the highest availability in Tape & Reel format. S-8337ABIA-T8T1U (760 units) and S-8338ACIA-T8T1U (801 units) are the primary full-feature alternatives in Cut Tape format.
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