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MAX765CPA Buck-Boost Switching Regulator IC Equivalent & Substitute Parts
Part Overview
The MAX765CPA is a buck-boost switching regulator IC manufactured by Analog Devices Inc./Maxim Integrated, designed for negative output voltage regulation. This device functions as a step-up/step-down converter with a single negative output, delivering 120mA at adjustable or fixed -1V (-12V) output levels. The part operates across an input voltage range of 3V to 16V with a switching frequency of 300kHz and is housed in an 8-DIP (0.300", 7.62mm) through-hole package.
The MAX765CPA is classified as obsolete. Locating equivalent or substitute components becomes necessary when original stock is depleted or when design requirements favor active, currently manufactured alternatives with improved compliance certifications.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Category | Power Management (PMIC) |
| Function | Step-Up/Step-Down (Buck-Boost) |
| Output Configuration | Negative |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 3V |
| Voltage - Input (Max) | 16V |
| Voltage - Output (Min/Fixed) | -1V (-12V) |
| Voltage - Output (Max) | -16V |
| Current - Output | 120mA |
| Frequency - Switching | 300kHz |
| Synchronous Rectifier | No |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole |
| Package / Case | 8-DIP (0.300", 7.62mm) |
| Supplier Device Package | 8-PDIP |
| Base Product Number | MAX765 |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX765CPA is determined by strict equivalence across the following critical parameters:
- Topology & Function: Buck-boost switching regulator with step-up/step-down capability
- Output Configuration: Negative voltage output
- Electrical Specifications: Input voltage range 3V–16V, output voltage -1V to -16V, 120mA output current, 300kHz switching frequency
- Package Type: 8-DIP (0.300", 7.62mm) through-hole mounting
- Synchronous Rectifier: Non-synchronous design
- Operating Temperature Range: 0°C ~ 70°C
The MAX765CPA+ qualifies as a direct substitute based on identical electrical and mechanical parameters. The primary distinction lies in product status and compliance certifications rather than functional or electrical characteristics.
Parameter Comparison
| Parameter | MAX765CPA (Main Part) | MAX765CPA+ (Substitute) |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Function | Step-Up/Step-Down | Step-Up/Step-Down |
| Output Configuration | Negative | Negative |
| Topology | Buck-Boost | Buck-Boost |
| Number of Outputs | 1 | 1 |
| Voltage - Input (Min) | 3V | 3V |
| Voltage - Input (Max) | 16V | 16V |
| Voltage - Output (Min/Fixed) | -1V (-12V) | -1V (-12V) |
| Voltage - Output (Max) | -16V | -16V |
| Current - Output | 120mA | 120mA |
| Frequency - Switching | 300kHz | 300kHz |
| Synchronous Rectifier | No | No |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) |
| Supplier Device Package | 8-PDIP | 8-PDIP |
| Base Product Number | MAX765 | MAX765 |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| Packaging | Not specified | Tube |
Engineering Selection Recommendations
The MAX765CPA+ is a direct functional and electrical equivalent to the MAX765CPA. Both devices share identical electrical specifications, switching characteristics, and package geometry, ensuring pin-for-pin compatibility and circuit-level interchangeability.
The MAX765CPA+ is classified as an active product with ROHS3 compliance, whereas the MAX765CPA is obsolete and RoHS non-compliant. Selection of the MAX765CPA+ is appropriate for new designs, production restocking, or applications where regulatory compliance and long-term component availability are required. The MAX765CPA remains suitable only for legacy system maintenance or repair where original component specifications are mandated.
Frequently Asked Questions (FAQ)
Q: Are the MAX765CPA and MAX765CPA+ electrically interchangeable?
A: Yes. Both devices are electrically and functionally identical across all specified parameters, including input/output voltage ranges, output current, switching frequency, and operating temperature. They are pin-for-pin compatible and require no circuit modifications for substitution.
Q: What is the primary difference between these two parts?
A: The MAX765CPA+ is an active product with ROHS3 compliance and tube packaging, while the MAX765CPA is obsolete and RoHS non-compliant. The electrical and mechanical specifications are identical.
Q: Can the MAX765CPA+ be used as a direct replacement in existing designs?
A: Yes. The MAX765CPA+ maintains the same 8-DIP (0.300", 7.62mm) through-hole package and all electrical characteristics, allowing direct substitution without PCB redesign or circuit modification.
Q: Are there any compliance or certification differences?
A: The MAX765CPA+ carries ROHS3 compliance certification, while the MAX765CPA does not. The MAX765CPA+ is therefore preferred for applications subject to RoHS regulations or where compliance documentation is required.
Q: What packaging options are available for the MAX765CPA+?
A: The MAX765CPA+ is supplied in tube packaging. The MAX765CPA packaging specification was not provided in the original documentation.
Q: Is the MAX765CPA still available for purchase?
A: The MAX765CPA is classified as obsolete. The MAX765CPA+ is the active equivalent and is the recommended choice for new procurement.
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