MAX5071BASA+ Equivalent & Substitute Parts

Part Overview

The MAX5071BASA+ is a Flyback Regulator Controller IC manufactured by Analog Devices Inc./Maxim Integrated, designed for positive, isolation-capable step-up/step-down DC-DC conversion applications. This active product operates as a transistor driver with frequency control capabilities across a 10.8V to 30V supply range and switching frequencies from 20kHz to 1MHz. The part is currently in production with 1135 units in stock.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, lead time considerations, or application-specific topology flexibility within the PWM controller category.

Substiute Parts

MAX5071BASA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1170MAX5071BASA+ Datasheet

Current PartRFQ

MAX5071BASA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1170MAX5071BASA+ Datasheet

DirectRFQ

UC1842AMDREP

Texas InstrumentsIn Stock: 2758UC1842AMDREP Datasheet

MFR RecommendedRFQ

UC1843AMDREP

Texas InstrumentsIn Stock: 1508UC1843AMDREP Datasheet

MFR RecommendedRFQ

UC1844AMDREP

Texas InstrumentsIn Stock: 1330UC1844AMDREP Datasheet

MFR RecommendedRFQ

UC1845AMDREP

Texas InstrumentsIn Stock: 1830UC1845AMDREP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX5071BASA+ are qualified based on the following critical parameters that determine functional compatibility:

Package Compatibility: All substitute parts maintain the 8-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical and electrical pin compatibility.

Supply Voltage Range: Substitute parts operate within overlapping supply voltage specifications. The MAX5071BASA+ operates at 10.8V ~ 30V. Texas Instruments UC1842AMDREP and UC1844AMDREP support 10V ~ 30V, while UC1843AMDREP and UC1845AMDREP support 7.9V ~ 30V, providing equivalent or extended lower-voltage capability.

Operating Temperature Range: The MAX5071BASA+ operates from -40°C to 125°C (junction temperature). All Texas Instruments substitutes operate from -55°C to 125°C (ambient temperature), providing equivalent or superior temperature performance.

Regulatory Compliance: All parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status, ensuring equivalent environmental and regulatory qualification.

Functional Classification: All parts function as PWM controllers within the Power Management (PMIC) category, supporting flyback and multi-topology applications with transistor driver output capability.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain active product status with current manufacturing support. Selection between the MAX5071BASA+ and Texas Instruments UC184x series should be based on application-specific topology requirements and supply voltage specifications.

For applications requiring minimum supply voltage operation below 10V, UC1843AMDREP and UC1845AMDREP support 7.9V minimum supply voltage compared to the MAX5071BASA+ 10.8V minimum.

For applications with fixed 10V or higher supply voltage requirements, UC1842AMDREP and UC1844AMDREP provide equivalent supply voltage specifications at 10V ~ 30V.

All parts maintain equivalent regulatory compliance (ROHS3, MSL Level 1, REACH Unaffected) and surface mount 8-SOIC packaging, ensuring direct substitution capability at the board assembly level.

Frequently Asked Questions (FAQ)

Q: Can UC1842AMDREP, UC1843AMDREP, UC1844AMDREP, or UC1845AMDREP be used as direct replacements for MAX5071BASA+?

A: Yes, all listed parts are functionally equivalent substitutes. They share identical 8-SOIC packaging, transistor driver output configuration, and PWM controller functionality. Supply voltage and temperature operating ranges are equivalent or superior across all substitutes.

Q: What is the primary difference between UC1842AMDREP and UC1843AMDREP?

A: UC1842AMDREP supports 10V ~ 30V supply voltage, while UC1843AMDREP supports 7.9V ~ 30V supply voltage. Both maintain identical 8-SOIC packaging and transistor driver output. Selection depends on minimum supply voltage requirements in the target application.

Q: What is the primary difference between UC1844AMDREP and UC1845AMDREP?

A: UC1844AMDREP supports 10V ~ 30V supply voltage, while UC1845AMDREP supports 7.9V ~ 30V supply voltage. Both maintain identical 8-SOIC packaging and transistor driver output. Selection depends on minimum supply voltage requirements in the target application.

Q: Are all substitute parts RoHS compliant?

A: Yes, all listed parts including MAX5071BASA+, UC1842AMDREP, UC1843AMDREP, UC1844AMDREP, and UC1845AMDREP maintain ROHS3 compliance status.

Q: What is the moisture sensitivity level for all parts?

A: All parts maintain Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Can these parts be used in flyback topology applications?

A: Yes, all listed parts support flyback and multi-topology PWM controller applications with transistor driver output configuration.

Q: What is the operating temperature range for substitute parts?

A: Texas Instruments UC184x series parts operate from -55°C to 125°C (ambient temperature), providing equivalent or superior temperature performance compared to MAX5071BASA+ at -40°C to 125°C (junction temperature).