FAN1589DX Equivalent & Substitute Parts

Part Overview

The FAN1589DX is an Intel VRM8.5 voltage regulator controller IC manufactured by onsemi, designed for single-output power management applications. This component operates with input voltage range of 3.3V to 7V and delivers a fixed 1.2V output. The device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

FAN1589DX

onsemiIn Stock: 4723FAN1589DX Datasheet

Current PartRFQ

LD1117ADT12TR

STMicroelectronicsIn Stock: 6673LD1117ADT12TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FAN1589DX is determined by the following critical parameters:

• Output Voltage: Fixed 1.2V output requirement
• Package Type: TO-252-3 DPAK form factor with identical pinout compatibility
• Operating Temperature Range: 0°C to 125°C
• Mounting Configuration: Surface mount technology
• Regulatory Compliance: REACH and ECCN classification alignment

The LD1117ADT12TR qualifies as a functional substitute based on matching output voltage specification (1.2V fixed), identical package type (TO-252-3 DPAK), overlapping operating temperature range (0°C ~ 125°C), and equivalent regulatory status (REACH Unaffected, EAR99).

Parameter Comparison

Engineering Selection Recommendations

The LD1117ADT12TR is an active production component from STMicroelectronics, providing continuity for applications previously using the obsolete FAN1589DX. Both components share identical package geometry (TO-252-3 DPAK), matching output voltage (1.2V fixed), and equivalent operating temperature specifications (0°C ~ 125°C). The LD1117ADT12TR offers extended input voltage tolerance (up to 15V versus 3.3V ~ 7V), providing broader application flexibility. Both devices maintain equivalent regulatory compliance status (REACH Unaffected, EAR99 classification) and unlimited moisture sensitivity rating (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can the LD1117ADT12TR directly replace the FAN1589DX in existing designs?

A: Yes, provided the application input voltage does not exceed 15V. Both components feature identical TO-252-3 DPAK pinout, matching 1.2V fixed output voltage, and equivalent operating temperature range (0°C ~ 125°C). Physical and electrical compatibility is confirmed.

Q: What are the key differences between these components?

A: The primary difference is product status: FAN1589DX is obsolete while LD1117ADT12TR is in active production. The LD1117ADT12TR specifies 1A output current and 1.3V maximum dropout voltage at 1A, with additional protection features (over-current and over-temperature). Input voltage tolerance is broader on the LD1117ADT12TR (up to 15V).

Q: Are there any package or pinout considerations?

A: Both components use identical TO-252-3 DPAK packaging with 2 leads plus tab configuration. No PCB layout modifications are required for substitution.

Q: What compliance certifications apply to both parts?

A: Both components are REACH Unaffected, classified as EAR99, and carry MSL 1 (Unlimited) moisture sensitivity rating. Regulatory compliance is equivalent.