MAX1669EEE Equivalent & Substitute Parts

Part Overview

The MAX1669EEE is a fan controller integrated circuit with integrated temperature monitoring capability, manufactured by Analog Devices Inc./Maxim Integrated. This device functions as a Power Management IC (PMIC) designed for thermal management applications requiring external temperature sensing and SMBus communication protocol support.

The MAX1669EEE is classified as obsolete product status. Identification of equivalent substitute parts is necessary to ensure continued availability for new designs, production continuity, and long-term system support where this component is specified.

Key Parameters

Parameter	Specification
Function	Fan Control, Temperature Monitor
Sensor Type	External
Sensing Temperature Range	-40°C ~ 125°C
Temperature Accuracy	±5°C (Max)
Output Type	SMBus
Output Alarm	Yes
Output Fan	Yes
Supply Voltage Range	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	16-SSOP (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Topology	ADC, Comparator, Multiplexer, Register Bank

Substitute Part Grouping Explanation

Substitution eligibility for the MAX1669EEE is determined by strict equivalence across the following critical parameters:

Functional Parameters:

Fan control and temperature monitoring capability
External temperature sensor interface
SMBus output protocol with alarm and fan control outputs

Electrical Parameters:

Supply voltage range: 3V ~ 5.5V
Operating temperature range: -40°C ~ 85°C
Temperature sensing range: -40°C ~ 125°C
Temperature accuracy: ±5°C (Max)

Physical Parameters:

Package type: 16-SSOP with 0.154" (3.90mm) width
Surface mount mounting type
16-QSOP supplier device package designation

Topology Parameters:

ADC, Comparator, Multiplexer, and Register Bank architecture

The MAX1669EEE+ qualifies as a direct substitute based on complete alignment with all specified electrical, functional, and physical parameters.

Parameter Comparison

Parameter	MAX1669EEE (Main Part)	MAX1669EEE+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Function	Fan Control, Temp Monitor	Fan Control, Temp Monitor
Sensor Type	External	External
Sensing Temperature Range	-40°C ~ 125°C	-40°C ~ 125°C
Temperature Accuracy	±5°C (Max)	±5°C (Max)
Output Type	SMBus	SMBus
Output Alarm	Yes	Yes
Output Fan	Yes	Yes
Supply Voltage Range	3V ~ 5.5V	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	16-SSOP (0.154", 3.90mm Width)	16-SSOP (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount
Topology	ADC, Comparator, Multiplexer, Register Bank	ADC, Comparator, Multiplexer, Register Bank
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The MAX1669EEE+ is the direct equivalent substitute for the MAX1669EEE based on complete functional and electrical parameter alignment. Both parts share identical specifications across all critical operating parameters, topology, and package configuration.

Product Status Consideration: The MAX1669EEE is classified as obsolete, while the MAX1669EEE+ maintains active product status. This distinction ensures continued manufacturing support, availability, and supply chain reliability for new designs and production requirements.

Compliance Differentiation: The MAX1669EEE+ achieves ROHS3 compliance, whereas the original MAX1669EEE is RoHS non-compliant. For applications subject to RoHS regulatory requirements or customer specifications mandating RoHS compliance, the MAX1669EEE+ is the appropriate selection.

Both parts maintain identical REACH Unaffected status and EAR99 export classification.

Selection Criteria:

For new designs: MAX1669EEE+
For RoHS-compliant applications: MAX1669EEE+
For legacy system maintenance where RoHS compliance is not required: MAX1669EEE (if available inventory permits)

Frequently Asked Questions (FAQ)

Q: Are the MAX1669EEE and MAX1669EEE+ pin-compatible?

A: Yes. Both parts utilize the 16-SSOP package with identical 0.154" (3.90mm) width and surface mount configuration. Pin assignments and electrical characteristics are equivalent.

Q: Can the MAX1669EEE+ replace the MAX1669EEE in existing designs?

A: Yes. The MAX1669EEE+ provides complete functional and electrical equivalence. All operating parameters, including supply voltage range (3V ~ 5.5V), temperature sensing capability (-40°C ~ 125°C), and SMBus output protocol, are identical.

Q: What is the primary difference between these two parts?

A: The MAX1669EEE+ is the active production variant with ROHS3 compliance, while the MAX1669EEE is obsolete and RoHS non-compliant. Electrical and functional specifications are identical.

Q: Does the RoHS compliance difference affect circuit operation?

A: No. RoHS compliance relates to material composition and manufacturing process, not electrical performance or functionality. Both parts operate identically within specified parameters.

Q: Are there any package or mounting differences?

A: No. Both parts are supplied in 16-QSOP package designation, mounted as 16-SSOP surface mount devices with 0.154" (3.90mm) width. PCB footprints are identical.

Q: What is the temperature sensing accuracy for both parts?

A: Both the MAX1669EEE and MAX1669EEE+ provide ±5°C maximum accuracy across the -40°C ~ 125°C sensing range.

Q: Can these parts be used interchangeably in production?

A: Yes. The MAX1669EEE+ is the direct substitute for the MAX1669EEE. For new production, the MAX1669EEE+ is recommended due to active product status and RoHS compliance.

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