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ER3110DI Buck Switching Regulator IC Equivalent & Substitute Parts
Part Overview
The ER3110DI is a buck switching regulator IC manufactured by Intel, designed for positive adjustable output applications. This device delivers 1A output current with an adjustable output voltage range from 0.6V to 34V, operating from a 3V to 36V input supply. The ER3110DI is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Intel |
| Part Number | ER3110DI |
| Category | Power Management (PMIC) |
| Function | Step-Down (Buck) |
| Output Configuration | Positive Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min/Max) | 3V / 36V |
| Voltage - Output (Min/Max) | 0.6V / 34V |
| Current - Output | 1A |
| Frequency - Switching | 300kHz ~ 2MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Package / Case | 12-VFDFN Exposed Pad |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS Compliant |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the ER3110DI is determined by strict alignment of the following electrical and mechanical parameters:
- Input voltage range: Minimum 3V, maximum 36V or higher
- Output voltage adjustability: 0.6V to 34V range
- Output current capability: Minimum 1A
- Package compatibility: 12-VFDFN Exposed Pad (12-DFN 4x3)
- Topology: Buck switching regulator with synchronous rectification
- Surface mount configuration
- Operating temperature range: -40°C to 125°C
The ISL854102FRZ-T7A manufactured by Renesas Electronics Corporation meets all substitution criteria. This device maintains identical input/output voltage specifications, package form factor, and thermal operating range while providing enhanced output current capability (1.2A) and extended maximum input voltage rating (40V).
Parameter Comparison
| Parameter | ER3110DI (Intel) | ISL854102FRZ-T7A (Renesas) |
|---|---|---|
| Category | Power Management (PMIC) | Power Management (PMIC) |
| Function | Step-Down | Step-Down |
| Output Configuration | Positive Adjustable | Positive Adjustable |
| Topology | Buck | Buck |
| Number of Outputs | 1 | 1 |
| Voltage - Input (Min) | 3V | 3V |
| Voltage - Input (Max) | 36V | 40V |
| Voltage - Output (Min/Fixed) | 0.6V | 0.6V |
| Voltage - Output (Max) | 34V | 34V |
| Current - Output | 1A | 1.2A |
| Frequency - Switching | 300kHz ~ 2MHz | 300kHz ~ 2MHz |
| Synchronous Rectifier | Yes | Yes |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) |
| Package / Case | 12-VFDFN Exposed Pad | 12-VFDFN Exposed Pad |
| Supplier Device Package | 12-DFN (4x3) | 12-DFN (4x3) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | RoHS Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | 3 (168 Hours) |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8542.39.0001 | 8542.39.0001 |
| Product Status | Obsolete | Obsolete |
Engineering Selection Recommendations
The ISL854102FRZ-T7A is a direct functional substitute for the ER3110DI. Both devices are classified as obsolete, requiring equivalent part selection for design continuation. The substitute part maintains full compatibility across all critical electrical parameters: input voltage range, adjustable output voltage specification, package form factor, and thermal operating range.
The ISL854102FRZ-T7A provides additional design margin through higher output current rating (1.2A versus 1A) and extended maximum input voltage tolerance (40V versus 36V). Both parts comply with RoHS requirements and share identical moisture sensitivity classification and export control designations.
Frequently Asked Questions (FAQ)
Q: Can the ISL854102FRZ-T7A directly replace the ER3110DI in existing designs?
A: Yes. Both devices feature identical 12-VFDFN Exposed Pad packaging, matching input/output voltage specifications, and equivalent thermal operating ranges. No PCB layout modifications are required for substitution.
Q: What are the key differences between these parts?
A: The ISL854102FRZ-T7A provides 1.2A output current compared to the ER3110DI's 1A rating, and accepts input voltages up to 40V versus 36V maximum for the ER3110DI. These represent design improvements rather than incompatibilities.
Q: Are there any compliance or certification differences?
A: Both parts are RoHS compliant and share identical MSL ratings (3, 168 Hours). The ISL854102FRZ-T7A carries ROHS3 certification while the ER3110DI is RoHS Compliant. Both are classified under identical ECCN and HTSUS codes.
Q: What switching frequency range do these regulators support?
A: Both the ER3110DI and ISL854102FRZ-T7A operate across a 300kHz to 2MHz switching frequency range, providing flexibility for application-specific frequency selection.
Q: Are both parts currently available?
A: Both devices are classified as obsolete. Inventory availability should be verified with authorized distributors before design commitment.
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