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SI-3025LSA Linear Voltage Regulator Equivalent & Substitute Parts
Part Overview
The SI-3025LSA is a linear voltage regulator IC from Sanken Electric USA Inc. designed for positive fixed output applications. This device delivers 1A output current at a fixed 2.5V output with a maximum dropout voltage of 0.8V at rated load. The regulator integrates over-current and over-temperature protection features with an enable control input, making it suitable for low-voltage power management applications requiring stable regulated output.
The SI-3025LSA is classified as obsolete. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications currently using this component.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SI-3025LSA |
| Manufacturer | Sanken Electric USA Inc. |
| Category | Power Management (PMIC) |
| Output Configuration | Positive |
| Output Type | Fixed |
| Voltage - Output (Min/Fixed) | 2.5V |
| Voltage - Input (Max) | 4.6V |
| Current - Output | 1A |
| Voltage Dropout (Max) | 0.8V @ 1A |
| Current - Quiescent (Iq) | 2.5 mA |
| PSRR | 57dB (100Hz ~ 120Hz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature Range | -20°C ~ 125°C |
| Package / Case | 8-SOIC (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitute parts for the SI-3025LSA are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:
Critical Matching Parameters:
- Output voltage: 2.5V fixed
- Maximum output current: 1A
- Maximum input voltage: 4.6V
- Maximum dropout voltage: 0.8V @ 1A
- Package type: 8-SOIC (0.173", 4.40mm Width)
- Mounting type: Surface Mount
- Control features: Enable function
- Protection: Over-current and over-temperature protection
Packaging Consideration: Substitute parts may differ in packaging format (tape, reel, or cut tape) without affecting electrical functionality, provided the component package and pinout remain identical.
Parameter Comparison
| Parameter | SI-3025LSA | SI-3025LSA-TL |
|---|---|---|
| Manufacturer Part Number | SI-3025LSA | SI-3025LSA-TL |
| Manufacturer | Sanken Electric USA Inc. | Sanken Electric USA Inc. |
| Output Configuration | Positive | Positive |
| Output Type | Fixed | Fixed |
| Voltage - Output (Min/Fixed) | 2.5V | 2.5V |
| Voltage - Input (Max) | 4.6V | 4.6V |
| Current - Output | 1A | 1A |
| Voltage Dropout (Max) | 0.8V @ 1A | 0.8V @ 1A |
| Current - Quiescent (Iq) | 2.5 mA | 2.5 mA |
| PSRR | 57dB (100Hz ~ 120Hz) | 57dB (100Hz ~ 120Hz) |
| Control Features | Enable | Enable |
| Protection Features | Over Current, Over Temperature | Over Current, Over Temperature |
| Operating Temperature Range | -20°C ~ 125°C | -20°C ~ 125°C |
| Package / Case | 8-SOIC (0.173", 4.40mm Width) | 8-SOIC (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | RoHS Compliant | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Obsolete | Obsolete |
| Packaging Format | Standard | Cut Tape (CT) |
Engineering Selection Recommendations
The SI-3025LSA-TL is a direct parametric equivalent to the SI-3025LSA. Both components are manufactured by Sanken Electric USA Inc. and share identical electrical specifications, package geometry, and functional characteristics. The only distinction is the packaging format: SI-3025LSA-TL is supplied in cut tape format, while the original part uses standard packaging.
Both parts carry RoHS Compliant certification and MSL Level 1 rating, ensuring compliance with environmental and moisture sensitivity requirements. Selection between these parts should be based on packaging requirements and supply availability rather than electrical performance considerations.
Frequently Asked Questions (FAQ)
Q: Can SI-3025LSA-TL replace SI-3025LSA in existing designs?
A: Yes. The SI-3025LSA-TL is electrically and mechanically identical to the SI-3025LSA. Both components feature the same 8-SOIC package, pinout, and electrical specifications. The difference is packaging format only.
Q: What is the difference between SI-3025LSA and SI-3025LSA-TL?
A: The primary difference is packaging format. SI-3025LSA-TL is supplied in cut tape (CT) format, while SI-3025LSA uses standard packaging. Electrical performance and package dimensions are identical.
Q: Are both parts RoHS compliant?
A: Yes. Both SI-3025LSA and SI-3025LSA-TL are RoHS Compliant and carry MSL Level 1 rating.
Q: What is the maximum output current for these regulators?
A: Both parts deliver a maximum output current of 1A at the fixed 2.5V output voltage.
Q: What is the dropout voltage specification?
A: The maximum dropout voltage is 0.8V when delivering 1A output current.
Q: Can these parts operate at temperatures below 0°C?
A: Yes. Both parts are rated for operation across the temperature range of -20°C to 125°C.
Q: What protection features are integrated?
A: Both parts include over-current protection and over-temperature protection to safeguard against fault conditions.
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