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FAN7528M Equivalent & Substitute Parts
Part Overview
The FAN7528M is a Power Factor Correction (PFC) controller IC manufactured by onsemi, designed for Critical Conduction (CRM) and Discontinuous (Transition) mode operation in 8-SOIC packaging. This device is classified as Obsolete, making equivalent and substitute parts necessary for ongoing system support and new design considerations. The FAN7528M operates within a 12V to 23V supply range and is suitable for surface mount applications requiring PFC control functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | FAN7528M |
| Manufacturer | onsemi |
| Category | Power Management (PMIC) |
| Description | IC PFC CTRLR CRM/TRANSITION 8SOP |
| Mode | Critical Conduction (CRM), Discontinuous (Transition) |
| Current - Startup | 40 µA |
| Voltage - Supply | 12V ~ 23V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Product Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution for the FAN7528M is determined by the following critical parameters:
- Package Compatibility: All substitute parts must use 8-SOIC (0.154", 3.90mm Width) packaging to ensure mechanical and electrical compatibility with existing PCB layouts.
- Operating Mode: Substitute parts must support either Critical Conduction (CRM) mode or Discontinuous (Transition) mode operation, or both.
- Supply Voltage Range: The substitute part's supply voltage specification must overlap with or encompass the FAN7528M's 12V to 23V range.
- Operating Temperature Range: The substitute part must support the required temperature range for the application.
- Mounting Type: Surface mount technology is required for all substitutes.
The substitute parts listed below meet these criteria and are organized by their primary operating mode and manufacturer.
Parameter Comparison
| Part Number | Manufacturer | Mode | Startup Current (µA) | Supply Voltage (V) | Operating Temp (°C) | Package | Product Status |
|---|---|---|---|---|---|---|---|
| FAN7528M | onsemi | CRM / Transition | 40 | 12 ~ 23 | -40 ~ 125 | 8-SOIC | Obsolete |
| NCP1607BDR2G | onsemi | CRM | 24.6 | 9.5 ~ 20 | -40 ~ 125 | 8-SOIC | Not For New Designs |
| L6561D013TR | STMicroelectronics | Transition | 50 | 11 ~ 18 | -25 ~ 125 | 8-SOIC | Not For New Designs |
| UCC28050D | Texas Instruments | Transition | 75 | 15.4 ~ 18 | -40 ~ 105 | 8-SOIC | Last Time Buy |
| UCC28050DR | Texas Instruments | Transition | 75 | 15.4 ~ 18 | -40 ~ 105 | 8-SOIC | Last Time Buy |
| UCC28051D | Texas Instruments | Transition | 75 | 12 ~ 18 | -40 ~ 105 | 8-SOIC | Active |
| UCC28051DR | Texas Instruments | Transition | 75 | 12 ~ 18 | -40 ~ 105 | 8-SOIC | Active |
| UCC38050D | Texas Instruments | Transition | 75 | 15.4 ~ 18 | 0 ~ 70 | 8-SOIC | Last Time Buy |
| UCC38050DR | Texas Instruments | Transition | 75 | 15.4 ~ 18 | 0 ~ 70 | 8-SOIC | Last Time Buy |
| UCC38051D | Texas Instruments | Transition | 75 | 12 ~ 18 | 0 ~ 70 | 8-SOIC | Last Time Buy |
Engineering Selection Recommendations
For Active Product Status Applications: UCC28051D and UCC28051DR are the only substitute parts with Active product status. These Texas Instruments devices support the FAN7528M's 12V to 18V supply voltage overlap and maintain the -40°C to 105°C operating temperature range suitable for industrial applications. Both variants are functionally identical, with UCC28051DR offered in Tape & Reel packaging for high-volume production.
For Extended Temperature Range Requirements: The FAN7528M and NCP1607BDR2G both support -40°C to 125°C operating temperatures. NCP1607BDR2G provides CRM mode operation with lower startup current (24.6 µA) but operates within a narrower supply voltage range (9.5V to 20V). This part is suitable for applications where the full 12V to 23V range of the FAN7528M is not required.
For Transition Mode Applications: L6561D013TR (STMicroelectronics) provides Discontinuous (Transition) mode operation with supply voltage range of 11V to 18V, overlapping the FAN7528M's operating window. This part maintains the extended temperature range (-25°C to 125°C) and is suitable for legacy system support.
For Restricted Temperature Range Applications: UCC38050D, UCC38050DR, and UCC38051D are Last Time Buy parts with restricted operating temperature ranges (0°C to 70°C). These are suitable only for commercial-grade applications that do not require extended temperature operation.
Compliance Considerations: All substitute parts listed are ROHS3 Compliant and REACH Unaffected, maintaining regulatory compliance equivalent to the FAN7528M. Moisture Sensitivity Level (MSL) is 1 (Unlimited) across all parts, ensuring consistent handling requirements.
Frequently Asked Questions (FAQ)
Q: Can I directly replace FAN7528M with any of the listed substitute parts? A: Direct replacement requires verification of three critical parameters: (1) operating mode compatibility (CRM or Transition), (2) supply voltage range overlap with your application, and (3) operating temperature requirements. Not all substitutes support the full 12V to 23V range of the FAN7528M.
Q: What is the difference between UCC28051D and UCC28051DR? A: Both parts are functionally identical Texas Instruments PFC controllers with Active product status. The primary difference is packaging: UCC28051D is supplied in Tube packaging, while UCC28051DR is supplied in Tape & Reel (TR) format. Selection depends on production volume and handling requirements.
Q: Why do some substitute parts have narrower supply voltage ranges? A: Different manufacturers design PFC controllers with varying input voltage specifications. NCP1607BDR2G operates from 9.5V to 20V, which covers the FAN7528M's 12V to 23V range partially. Applications requiring operation above 20V cannot use this substitute.
Q: Are all substitute parts suitable for new designs? A: No. Only UCC28051D and UCC28051DR have Active product status. All other substitutes are classified as "Not For New Designs" or "Last Time Buy," indicating they are intended for legacy system support and production continuation only.
Q: What is the significance of the 8-SOIC package specification? A: The 8-SOIC (0.154", 3.90mm Width) package is a standard surface mount integrated circuit package. All listed substitutes use this identical package, ensuring mechanical compatibility with existing PCB layouts and soldering processes without requiring board redesign.
Q: How does startup current affect substitute selection? A: Startup current (ranging from 24.6 µA to 75 µA across substitutes) affects the bias supply design and power consumption during device initialization. The FAN7528M specifies 40 µA. Higher startup currents (such as 75 µA in Texas Instruments parts) may require bias supply circuit adjustments but do not prevent substitution if other parameters align.
Q: Can I use UCC38051D in an application requiring -40°C operation? A: No. UCC38051D operates from 0°C to 70°C only. Applications requiring -40°C operation must use parts with extended temperature ranges, such as FAN7528M, NCP1607BDR2G, or L6561D013TR.
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