MAX1822ESA-T Equivalent & Substitute Parts

Part Overview

The MAX1822ESA-T is a Charge Pump Switching Regulator IC manufactured by Analog Devices Inc./Maxim Integrated, designed for power management applications requiring positive fixed output voltage regulation. This device generates Vin+11V output from a 4.6V to 16.5V input range with 25mA output current capability in an 8-SOIC surface mount package.

The MAX1822ESA-T is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for applications currently utilizing this charge pump regulator.

Key Parameters

Parameter	Value
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Power Management (PMIC)
Topology	Charge Pump
Output Configuration	Positive
Output Type	Fixed
Number of Outputs	1
Voltage - Input (Min)	4.6V
Voltage - Input (Max)	16.5V
Voltage - Output (Fixed)	Vin+11V
Current - Output	25mA
Frequency - Switching	90kHz
Synchronous Rectifier	No
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX1822ESA-T is determined by strict equivalence across the following critical parameters:

Charge pump topology with positive output configuration
Fixed output voltage of Vin+11V
Input voltage range of 4.6V to 16.5V
Output current capability of 25mA
Switching frequency of 90kHz
8-SOIC surface mount package (0.154", 3.90mm Width)
Operating temperature range of -40°C to 85°C
RoHS3 compliance and MSL Level 1 rating

The substitute part MAX1822ESA+T shares identical electrical specifications and package configuration with the main part number. The primary distinction is packaging format: the main part is supplied in tube packaging, while the substitute is supplied in Tape & Reel (TR) format. Both parts are manufactured by the same supplier and maintain full functional and mechanical compatibility.

Parameter Comparison

Parameter	MAX1822ESA-T	MAX1822ESA+T	Match
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	✓
Base Product Number	MAX1822	MAX1822	✓
Topology	Charge Pump	Charge Pump	✓
Output Configuration	Positive	Positive	✓
Output Type	Fixed	Fixed	✓
Number of Outputs	1	1	✓
Voltage - Input (Min)	4.6V	4.6V	✓
Voltage - Input (Max)	16.5V	16.5V	✓
Voltage - Output (Fixed)	Vin+11V	Vin+11V	✓
Current - Output	25mA	25mA	✓
Frequency - Switching	90kHz	90kHz	✓
Synchronous Rectifier	No	No	✓
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	✓
Mounting Type	Surface Mount	Surface Mount	✓
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	✓
Supplier Device Package	8-SOIC	8-SOIC	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓
Product Status	Obsolete	Active	Different
Packaging Format	Tube	Tape & Reel (TR)	Different

Engineering Selection Recommendations

The MAX1822ESA+T is a direct functional equivalent to the MAX1822ESA-T. Both parts share identical electrical characteristics, thermal specifications, and mechanical compatibility. The substitute part maintains Active product status, ensuring continued manufacturer support and supply chain availability, whereas the main part is classified as Obsolete.

Selection between these parts should be based on packaging requirements and supply chain considerations. The MAX1822ESA+T in Tape & Reel format is suitable for automated assembly processes and high-volume production environments. Both parts maintain full RoHS3 compliance and REACH compliance status, meeting regulatory requirements for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can MAX1822ESA+T replace MAX1822ESA-T in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The MAX1822ESA+T provides the same charge pump regulation topology, output voltage (Vin+11V), input voltage range (4.6V to 16.5V), output current (25mA), and 8-SOIC package configuration. The only difference is packaging format: tube versus Tape & Reel.

Q: What is the difference between tube and Tape & Reel packaging?

A: Tube packaging is used for manual handling and lower-volume applications. Tape & Reel packaging is designed for automated pick-and-place assembly equipment and high-volume production. Both formats contain the same component with identical electrical performance.

Q: Why is the MAX1822ESA-T classified as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support for this specific part number. The MAX1822ESA+T, with Active status, represents the current production equivalent and is the recommended choice for new designs and ongoing production.

Q: Are there any compliance differences between these parts?

A: No. Both parts maintain identical RoHS3 compliance, REACH Unaffected status, MSL Level 1 rating, and operating temperature specifications (-40°C to 85°C). Regulatory and environmental compliance is equivalent.

Q: What is the switching frequency of these charge pump regulators?

A: Both the MAX1822ESA-T and MAX1822ESA+T operate at a fixed switching frequency of 90kHz, which determines the efficiency and noise characteristics of the charge pump regulation circuit.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes, provided the assembly process accommodates the packaging format. If the design uses automated assembly with Tape & Reel feeders, the MAX1822ESA+T is the appropriate choice. Both parts use the same 8-SOIC footprint and pin configuration.

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