UC3907NG4 Load Share Controller - Equivalent & Substitute Parts

Part Overview

The UC3907NG4 is a Load Share Controller PMIC manufactured by Texas Instruments in a 16-PDIP through-hole package. This component is classified as Obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations. The UC3907NG4 operates across a 4.5V to 36V supply voltage range with a 6mA supply current requirement, designed for load sharing applications in power management circuits.

Substiute Parts

UC3907NG4

Texas InstrumentsIn Stock: 691UC3907NG4 Datasheet

Current PartRFQ

UCC29002DR

Texas InstrumentsIn Stock: 4657UCC29002DR Datasheet

MFR RecommendedRFQ

UC3907N

Texas InstrumentsIn Stock: 2524UC3907N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UC3907NG4 are identified based on functional equivalence within the Load Share Controller category. The primary substitution criteria are:

• Functional application: Load Share Controller operation
• Manufacturer: Texas Instruments (same design ecosystem)
• Supply voltage compatibility: Overlap within operating ranges
• Supply current requirements: Compatibility with system power budgets
• RoHS and regulatory compliance: ROHS3 Compliant status maintained

Two substitute parts are identified: UCC29002DR (advanced variant, surface mount) and UC3907N (same package family, Last Time Buy status).

Parameter Comparison

Engineering Selection Recommendations

UC3907N is the direct package equivalent to UC3907NG4, maintaining identical through-hole 16-DIP packaging, supply voltage range (4.5V ~ 36V), and supply current (6mA). Both components share the same operating temperature specification (0°C ~ 70°C). UC3907N carries Last Time Buy status, indicating limited future availability. This part is suitable for direct replacement in existing through-hole PCB designs without layout modifications.

UCC29002DR represents an advanced Load Share Controller variant with enhanced specifications. It operates across a narrower supply voltage range (4.375V ~ 14.25V) and requires lower supply current (2.5mA). The component uses surface-mount 8-SOIC packaging, requiring PCB redesign for implementation. UCC29002DR offers extended operating temperature range (-40°C ~ 105°C) and Active product status, ensuring long-term availability. This part is suitable for new designs or redesigns where surface-mount technology and reduced power consumption are advantageous.

Both substitute parts maintain ROHS3 compliance and are manufactured by Texas Instruments, ensuring regulatory alignment and design continuity.

Frequently Asked Questions (FAQ)

Q: Can UC3907N directly replace UC3907NG4 without PCB modifications?

A: Yes. UC3907N maintains identical package specifications (16-DIP through-hole), supply voltage range (4.5V ~ 36V), and supply current (6mA). Direct substitution is possible without PCB layout changes.

Q: What are the limitations of UCC29002DR as a substitute?

A: UCC29002DR uses 8-SOIC surface-mount packaging versus the 16-DIP through-hole package of UC3907NG4. The supply voltage range is narrower (4.375V ~ 14.25V versus 4.5V ~ 36V). PCB redesign is required for implementation. Verify that your system's supply voltage falls within the 4.375V to 14.25V range before selection.

Q: Why is UC3907NG4 classified as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. UC3907N (Last Time Buy status) and UCC29002DR (Active status) are the recommended alternatives for continued system support and new designs.

Q: Which substitute part offers the best long-term availability?

A: UCC29002DR carries Active product status, indicating ongoing manufacturing and availability. UC3907N is Last Time Buy, with limited future stock. For new designs requiring extended component lifecycle, UCC29002DR is the preferred selection.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both UC3907N and UCC29002DR are ROHS3 Compliant, maintaining regulatory alignment with UC3907NG4.