MAX604CPA Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The MAX604CPA is a linear voltage regulator IC from Analog Devices Inc./Maxim Integrated, classified as a Power Management (PMIC) component. It provides positive adjustable output with a 500mA current capacity in an 8-DIP through-hole package. The device features integrated protection against overcurrent, overtemperature, and reverse polarity conditions, with an enable control feature for power management applications.

The MAX604CPA is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance or redesign initiatives.

Key Parameters

Parameter	Value
Output Configuration	Positive
Output Type	Adjustable (Fixed)
Number of Regulators	1
Voltage - Input (Max)	11.5V
Voltage - Output (Min/Fixed)	1.25V (3.3V)
Voltage - Output (Max)	11V
Voltage Dropout (Max)	0.82V @ 400mA
Current - Output	500mA
Current - Quiescent (Iq)	35 µA
Control Features	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity
Operating Temperature	0°C ~ 70°C
Mounting Type	Through Hole
Package / Case	8-DIP (0.300", 7.62mm)
Base Product Number	MAX604

Substitute Part Grouping Explanation

Substitution eligibility for the MAX604CPA is determined by strict equivalence across the following critical parameters:

Output configuration (Positive)
Output type (Adjustable/Fixed capability)
Number of regulators (1)
Input and output voltage ranges (11.5V max input, 1.25V–11V output)
Dropout voltage specification (0.82V @ 400mA)
Output current capacity (500mA)
Quiescent current (35 µA)
Control and protection features (Enable, Over Current, Over Temperature, Reverse Polarity)
Operating temperature range (0°C ~ 70°C)
Package type (8-DIP through-hole)

The MAX604CPA+ is identified as a direct substitute based on identical electrical specifications and functional characteristics across all parameters listed above.

Parameter Comparison

Parameter	MAX604CPA (Main Part)	MAX604CPA+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Category	Power Management (PMIC)	Power Management (PMIC)
Product Status	Obsolete	Active
Output Configuration	Positive	Positive
Output Type	Adjustable (Fixed)	Adjustable (Fixed)
Number of Regulators	1	1
Voltage - Input (Max)	11.5V	11.5V
Voltage - Output (Min/Fixed)	1.25V (3.3V)	1.25V (3.3V)
Voltage - Output (Max)	11V	11V
Voltage Dropout (Max)	0.82V @ 400mA	0.82V @ 400mA
Current - Output	500mA	500mA
Current - Quiescent (Iq)	35 µA	35 µA
Control Features	Enable	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity	Over Current, Over Temperature, Reverse Polarity
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C
Mounting Type	Through Hole	Through Hole
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Base Product Number	MAX604	MAX604
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The MAX604CPA+ is a direct functional equivalent to the MAX604CPA. Both parts share identical electrical specifications, performance characteristics, and package geometry. The primary distinction is product status and regulatory compliance.

The MAX604CPA is obsolete and carries RoHS non-compliant status. The MAX604CPA+ is an active product with ROHS3 compliance, making it the preferred selection for new designs and systems requiring regulatory adherence to current environmental standards.

For legacy system maintenance or repair where the original MAX604CPA is specified, the MAX604CPA+ provides full electrical and mechanical compatibility without design modification. Pin configuration, voltage ratings, current capacity, protection features, and thermal characteristics remain identical.

Frequently Asked Questions (FAQ)

Q: Can the MAX604CPA+ be used as a direct replacement for the MAX604CPA in existing designs?

A: Yes. The MAX604CPA+ is electrically and mechanically identical to the MAX604CPA. Both parts feature the same 8-DIP package, identical pin configuration, and matching electrical specifications across all parameters including voltage ranges, current capacity, dropout voltage, and protection features. No circuit modification is required.

Q: What is the difference between MAX604CPA and MAX604CPA+?

A: The primary differences are product status and regulatory compliance. The MAX604CPA is obsolete and RoHS non-compliant. The MAX604CPA+ is an active product with ROHS3 compliance. Electrical performance and package specifications are identical.

Q: Are there any package or pinout differences between these parts?

A: No. Both the MAX604CPA and MAX604CPA+ use the 8-DIP (0.300", 7.62mm) through-hole package with identical pinout and mechanical dimensions. They are interchangeable from a PCB layout and assembly perspective.

Q: What protection features are included in both parts?

A: Both the MAX604CPA and MAX604CPA+ include overcurrent protection, overtemperature protection, and reverse polarity protection. An enable control feature is also provided for power management applications.

Q: What is the maximum output current for these regulators?

A: Both parts deliver a maximum output current of 500mA with a maximum dropout voltage of 0.82V at 400mA.

Q: Are these parts suitable for adjustable or fixed output voltage applications?

A: Both the MAX604CPA and MAX604CPA+ support adjustable and fixed output voltage configurations. The output voltage range is 1.25V to 11V, with a fixed option at 3.3V.

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